/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:32:25,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:32:25,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:32:25,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 22:32:25,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:32:25,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:32:25,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:32:25,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-10-13 22:32:25,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:32:25,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:32:25,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 22:32:25,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 22:32:25,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:32:25,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:32:25,527 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:32:25,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:32:25,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:32:25,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:32:25,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:32:25,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:32:25,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:32:25,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:32:25,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:32:25,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 22:32:25,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:32:25,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:32:25,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:32:25,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:32:25,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:32:25,720 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:32:25,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2021-10-13 22:32:25,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b6ad91a8/d994c4b35d3143b39e73038fc4320489/FLAG4479a5094 [2021-10-13 22:32:26,179 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:32:26,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2021-10-13 22:32:26,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b6ad91a8/d994c4b35d3143b39e73038fc4320489/FLAG4479a5094 [2021-10-13 22:32:26,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b6ad91a8/d994c4b35d3143b39e73038fc4320489 [2021-10-13 22:32:26,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:32:26,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:32:26,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:32:26,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:32:26,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:32:26,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5786685c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26, skipping insertion in model container [2021-10-13 22:32:26,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:32:26,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:32:26,782 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2021-10-13 22:32:26,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:32:26,788 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:32:26,829 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2021-10-13 22:32:26,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:32:26,858 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:32:26,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26 WrapperNode [2021-10-13 22:32:26,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:32:26,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:32:26,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:32:26,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:32:26,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:32:26,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:32:26,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:32:26,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:32:26,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:32:26,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:32:26,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:32:26,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:32:26,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (1/1) ... [2021-10-13 22:32:26,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:32:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:26,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 22:32:26,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 22:32:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-10-13 22:32:26,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-10-13 22:32:26,985 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-10-13 22:32:26,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:32:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:32:26,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:32:26,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 22:32:27,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:32:27,213 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 22:32:27,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:32:27 BoogieIcfgContainer [2021-10-13 22:32:27,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:32:27,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:32:27,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:32:27,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:32:27,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:32:26" (1/3) ... [2021-10-13 22:32:27,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51541a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:32:27, skipping insertion in model container [2021-10-13 22:32:27,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:26" (2/3) ... [2021-10-13 22:32:27,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51541a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:32:27, skipping insertion in model container [2021-10-13 22:32:27,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:32:27" (3/3) ... [2021-10-13 22:32:27,219 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2021-10-13 22:32:27,222 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 22:32:27,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:32:27,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:32:27,223 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:32:27,239 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,239 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,242 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,242 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,242 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,242 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,244 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,244 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,245 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,245 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,245 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,245 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,246 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,246 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,247 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,248 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,248 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,248 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,248 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,248 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,249 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,250 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,251 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,251 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,254 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,254 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,254 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,254 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,254 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,255 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,258 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,258 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,258 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:27,260 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:32:27,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:32:27,287 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 22:32:27,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 22:32:27,294 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 66 transitions, 142 flow [2021-10-13 22:32:27,339 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 22:32:27,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:27,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:27,349 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:27,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2112281486, now seen corresponding path program 1 times [2021-10-13 22:32:27,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:27,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824837327] [2021-10-13 22:32:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:27,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:27,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824837327] [2021-10-13 22:32:27,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824837327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:27,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:27,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:32:27,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24533168] [2021-10-13 22:32:27,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:32:27,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:32:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:32:27,643 INFO L87 Difference]: Start difference. First operand has 780 states, 779 states have (on average 2.934531450577664) internal successors, (2286), 779 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:27,747 INFO L93 Difference]: Finished difference Result 1582 states and 4288 transitions. [2021-10-13 22:32:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 22:32:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 22:32:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:27,762 INFO L225 Difference]: With dead ends: 1582 [2021-10-13 22:32:27,762 INFO L226 Difference]: Without dead ends: 1248 [2021-10-13 22:32:27,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:32:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-10-13 22:32:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 800. [2021-10-13 22:32:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.728410513141427) internal successors, (2180), 799 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2180 transitions. [2021-10-13 22:32:27,844 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2180 transitions. Word has length 32 [2021-10-13 22:32:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:27,844 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2180 transitions. [2021-10-13 22:32:27,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2180 transitions. [2021-10-13 22:32:27,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 22:32:27,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:27,847 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:27,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:32:27,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:27,848 INFO L82 PathProgramCache]: Analyzing trace with hash 482644881, now seen corresponding path program 1 times [2021-10-13 22:32:27,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:27,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316199495] [2021-10-13 22:32:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:27,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:27,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316199495] [2021-10-13 22:32:27,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316199495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:27,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:27,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:32:27,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667769327] [2021-10-13 22:32:27,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:32:27,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:32:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:32:27,965 INFO L87 Difference]: Start difference. First operand 800 states and 2180 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:28,061 INFO L93 Difference]: Finished difference Result 1302 states and 3436 transitions. [2021-10-13 22:32:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 22:32:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 22:32:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:28,066 INFO L225 Difference]: With dead ends: 1302 [2021-10-13 22:32:28,066 INFO L226 Difference]: Without dead ends: 920 [2021-10-13 22:32:28,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-13 22:32:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 864. [2021-10-13 22:32:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.6882966396292005) internal successors, (2320), 863 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2320 transitions. [2021-10-13 22:32:28,102 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2320 transitions. Word has length 36 [2021-10-13 22:32:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:28,103 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2320 transitions. [2021-10-13 22:32:28,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2320 transitions. [2021-10-13 22:32:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:28,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:28,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:28,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:32:28,109 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1828771722, now seen corresponding path program 1 times [2021-10-13 22:32:28,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:28,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670668820] [2021-10-13 22:32:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:28,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:28,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:28,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670668820] [2021-10-13 22:32:28,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670668820] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:28,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:28,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:32:28,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300708071] [2021-10-13 22:32:28,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:32:28,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:32:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:32:28,266 INFO L87 Difference]: Start difference. First operand 864 states and 2320 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:28,410 INFO L93 Difference]: Finished difference Result 1304 states and 3456 transitions. [2021-10-13 22:32:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:32:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:32:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:28,415 INFO L225 Difference]: With dead ends: 1304 [2021-10-13 22:32:28,415 INFO L226 Difference]: Without dead ends: 1044 [2021-10-13 22:32:28,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-13 22:32:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 876. [2021-10-13 22:32:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.7062857142857144) internal successors, (2368), 875 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2368 transitions. [2021-10-13 22:32:28,435 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2368 transitions. Word has length 40 [2021-10-13 22:32:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:28,436 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2368 transitions. [2021-10-13 22:32:28,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2368 transitions. [2021-10-13 22:32:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:28,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:28,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:28,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:32:28,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash 550294988, now seen corresponding path program 2 times [2021-10-13 22:32:28,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:28,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614492384] [2021-10-13 22:32:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:28,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:28,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:28,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614492384] [2021-10-13 22:32:28,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614492384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:28,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:28,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:32:28,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432960959] [2021-10-13 22:32:28,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:32:28,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:32:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:32:28,576 INFO L87 Difference]: Start difference. First operand 876 states and 2368 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:28,679 INFO L93 Difference]: Finished difference Result 1836 states and 4872 transitions. [2021-10-13 22:32:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:32:28,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:32:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:28,689 INFO L225 Difference]: With dead ends: 1836 [2021-10-13 22:32:28,689 INFO L226 Difference]: Without dead ends: 1505 [2021-10-13 22:32:28,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-13 22:32:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 975. [2021-10-13 22:32:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.6981519507186857) internal successors, (2628), 974 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2628 transitions. [2021-10-13 22:32:28,712 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2628 transitions. Word has length 40 [2021-10-13 22:32:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:28,713 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 2628 transitions. [2021-10-13 22:32:28,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2628 transitions. [2021-10-13 22:32:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:28,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:28,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:28,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:32:28,715 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:28,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2026923248, now seen corresponding path program 3 times [2021-10-13 22:32:28,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:28,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316148170] [2021-10-13 22:32:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:28,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:28,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:28,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316148170] [2021-10-13 22:32:28,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316148170] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:28,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:28,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:32:28,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327246914] [2021-10-13 22:32:28,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:32:28,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:32:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:32:28,808 INFO L87 Difference]: Start difference. First operand 975 states and 2628 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:28,882 INFO L93 Difference]: Finished difference Result 2211 states and 5878 transitions. [2021-10-13 22:32:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:32:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:32:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:28,889 INFO L225 Difference]: With dead ends: 2211 [2021-10-13 22:32:28,889 INFO L226 Difference]: Without dead ends: 1944 [2021-10-13 22:32:28,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-10-13 22:32:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1127. [2021-10-13 22:32:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.769982238010657) internal successors, (3119), 1126 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3119 transitions. [2021-10-13 22:32:28,915 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3119 transitions. Word has length 40 [2021-10-13 22:32:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:28,916 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 3119 transitions. [2021-10-13 22:32:28,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3119 transitions. [2021-10-13 22:32:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:28,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:28,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:28,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:32:28,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1961680958, now seen corresponding path program 4 times [2021-10-13 22:32:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:28,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791821292] [2021-10-13 22:32:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:28,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:28,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:28,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791821292] [2021-10-13 22:32:28,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791821292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:28,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:28,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:32:28,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730128775] [2021-10-13 22:32:28,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:32:28,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:32:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:32:28,994 INFO L87 Difference]: Start difference. First operand 1127 states and 3119 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:29,126 INFO L93 Difference]: Finished difference Result 1671 states and 4527 transitions. [2021-10-13 22:32:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:32:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 22:32:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:29,130 INFO L225 Difference]: With dead ends: 1671 [2021-10-13 22:32:29,130 INFO L226 Difference]: Without dead ends: 1173 [2021-10-13 22:32:29,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-10-13 22:32:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 922. [2021-10-13 22:32:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.732899022801303) internal successors, (2517), 921 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2517 transitions. [2021-10-13 22:32:29,146 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2517 transitions. Word has length 40 [2021-10-13 22:32:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:29,147 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 2517 transitions. [2021-10-13 22:32:29,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2517 transitions. [2021-10-13 22:32:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:29,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:29,148 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 22:32:29,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:29,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1188275055, now seen corresponding path program 1 times [2021-10-13 22:32:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:29,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377189197] [2021-10-13 22:32:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:29,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:29,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:29,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377189197] [2021-10-13 22:32:29,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377189197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:29,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987618400] [2021-10-13 22:32:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:29,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:29,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:29,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:29,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 22:32:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:29,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:32:29,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:29,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987618400] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:29,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:29,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:32:29,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664961220] [2021-10-13 22:32:29,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:29,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:29,463 INFO L87 Difference]: Start difference. First operand 922 states and 2517 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:29,546 INFO L93 Difference]: Finished difference Result 1526 states and 4027 transitions. [2021-10-13 22:32:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 22:32:29,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 22:32:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:29,551 INFO L225 Difference]: With dead ends: 1526 [2021-10-13 22:32:29,551 INFO L226 Difference]: Without dead ends: 1256 [2021-10-13 22:32:29,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-10-13 22:32:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1113. [2021-10-13 22:32:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.741007194244604) internal successors, (3048), 1112 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3048 transitions. [2021-10-13 22:32:29,573 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3048 transitions. Word has length 45 [2021-10-13 22:32:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:29,574 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 3048 transitions. [2021-10-13 22:32:29,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3048 transitions. [2021-10-13 22:32:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:29,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:29,576 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:29,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 22:32:29,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:29,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash 895709223, now seen corresponding path program 2 times [2021-10-13 22:32:29,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:29,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327096575] [2021-10-13 22:32:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:29,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:29,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:29,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327096575] [2021-10-13 22:32:29,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327096575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:29,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365923965] [2021-10-13 22:32:29,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:29,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:29,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:29,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 22:32:29,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:29,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:29,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:29,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365923965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:30,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 22:32:30,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186645252] [2021-10-13 22:32:30,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:32:30,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:32:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:32:30,033 INFO L87 Difference]: Start difference. First operand 1113 states and 3048 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:30,134 INFO L93 Difference]: Finished difference Result 2408 states and 6431 transitions. [2021-10-13 22:32:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:32:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 22:32:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:30,142 INFO L225 Difference]: With dead ends: 2408 [2021-10-13 22:32:30,142 INFO L226 Difference]: Without dead ends: 2138 [2021-10-13 22:32:30,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-10-13 22:32:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1293. [2021-10-13 22:32:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.791795665634675) internal successors, (3607), 1292 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3607 transitions. [2021-10-13 22:32:30,188 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3607 transitions. Word has length 45 [2021-10-13 22:32:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:30,188 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 3607 transitions. [2021-10-13 22:32:30,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3607 transitions. [2021-10-13 22:32:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:30,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:30,190 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:30,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 22:32:30,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash 960951513, now seen corresponding path program 3 times [2021-10-13 22:32:30,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:30,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37777459] [2021-10-13 22:32:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:30,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:30,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37777459] [2021-10-13 22:32:30,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37777459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350028389] [2021-10-13 22:32:30,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:30,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:30,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:30,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:30,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 22:32:30,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:32:30,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:30,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350028389] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:30,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:32:30,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168688800] [2021-10-13 22:32:30,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:30,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:30,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:30,654 INFO L87 Difference]: Start difference. First operand 1293 states and 3607 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:30,821 INFO L93 Difference]: Finished difference Result 2196 states and 5861 transitions. [2021-10-13 22:32:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:30,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 22:32:30,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:30,827 INFO L225 Difference]: With dead ends: 2196 [2021-10-13 22:32:30,827 INFO L226 Difference]: Without dead ends: 1621 [2021-10-13 22:32:30,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:32:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-10-13 22:32:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1328. [2021-10-13 22:32:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.7754333082140166) internal successors, (3683), 1327 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3683 transitions. [2021-10-13 22:32:30,851 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3683 transitions. Word has length 45 [2021-10-13 22:32:30,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:30,853 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 3683 transitions. [2021-10-13 22:32:30,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3683 transitions. [2021-10-13 22:32:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:32:30,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:30,855 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:30,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:31,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:31,070 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1472791299, now seen corresponding path program 1 times [2021-10-13 22:32:31,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:31,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884243976] [2021-10-13 22:32:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:31,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:31,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:31,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884243976] [2021-10-13 22:32:31,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884243976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846262961] [2021-10-13 22:32:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:31,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:31,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:31,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 22:32:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:31,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:31,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:31,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846262961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:31,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:31,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904932395] [2021-10-13 22:32:31,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:31,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:31,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:31,496 INFO L87 Difference]: Start difference. First operand 1328 states and 3683 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:31,653 INFO L93 Difference]: Finished difference Result 2068 states and 5483 transitions. [2021-10-13 22:32:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:31,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:32:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:31,658 INFO L225 Difference]: With dead ends: 2068 [2021-10-13 22:32:31,658 INFO L226 Difference]: Without dead ends: 1734 [2021-10-13 22:32:31,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:32:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-10-13 22:32:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1413. [2021-10-13 22:32:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 2.7287535410764874) internal successors, (3853), 1412 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 3853 transitions. [2021-10-13 22:32:31,681 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 3853 transitions. Word has length 50 [2021-10-13 22:32:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:31,682 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 3853 transitions. [2021-10-13 22:32:31,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 3853 transitions. [2021-10-13 22:32:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:32:31,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:31,685 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 22:32:31,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:31,904 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:31,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2040070847, now seen corresponding path program 2 times [2021-10-13 22:32:31,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:31,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742811017] [2021-10-13 22:32:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:31,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:31,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:31,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742811017] [2021-10-13 22:32:31,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742811017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077897872] [2021-10-13 22:32:31,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:31,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:31,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:31,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 22:32:32,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:32,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:32,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:32,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:32,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077897872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:32,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:32,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 22:32:32,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871439540] [2021-10-13 22:32:32,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:32:32,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:32,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:32:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:32:32,234 INFO L87 Difference]: Start difference. First operand 1413 states and 3853 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:32,312 INFO L93 Difference]: Finished difference Result 2061 states and 5277 transitions. [2021-10-13 22:32:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 22:32:32,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:32:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:32,319 INFO L225 Difference]: With dead ends: 2061 [2021-10-13 22:32:32,319 INFO L226 Difference]: Without dead ends: 1791 [2021-10-13 22:32:32,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-10-13 22:32:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1428. [2021-10-13 22:32:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.721093202522775) internal successors, (3883), 1427 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3883 transitions. [2021-10-13 22:32:32,341 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3883 transitions. Word has length 50 [2021-10-13 22:32:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:32,341 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 3883 transitions. [2021-10-13 22:32:32,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3883 transitions. [2021-10-13 22:32:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:32:32,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:32,343 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:32,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:32,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 22:32:32,555 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:32,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1907955151, now seen corresponding path program 3 times [2021-10-13 22:32:32,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:32,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411708926] [2021-10-13 22:32:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:32,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:32,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:32,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411708926] [2021-10-13 22:32:32,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411708926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:32,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977172414] [2021-10-13 22:32:32,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:32,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:32,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:32,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 22:32:32,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:32:32,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:32,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:32,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:32,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977172414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:32,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:32,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 22:32:32,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009120729] [2021-10-13 22:32:32,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:32,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:32,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:32,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:32,906 INFO L87 Difference]: Start difference. First operand 1428 states and 3883 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:33,052 INFO L93 Difference]: Finished difference Result 2006 states and 5197 transitions. [2021-10-13 22:32:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:32:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:33,062 INFO L225 Difference]: With dead ends: 2006 [2021-10-13 22:32:33,062 INFO L226 Difference]: Without dead ends: 1736 [2021-10-13 22:32:33,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-10-13 22:32:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1428. [2021-10-13 22:32:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.7245970567624385) internal successors, (3888), 1427 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3888 transitions. [2021-10-13 22:32:33,086 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3888 transitions. Word has length 50 [2021-10-13 22:32:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:33,087 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 3888 transitions. [2021-10-13 22:32:33,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3888 transitions. [2021-10-13 22:32:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:32:33,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:33,089 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:33,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:33,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,296 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1930629695, now seen corresponding path program 4 times [2021-10-13 22:32:33,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:33,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167110425] [2021-10-13 22:32:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:33,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:33,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:33,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167110425] [2021-10-13 22:32:33,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167110425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118409058] [2021-10-13 22:32:33,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:33,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:33,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:33,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 22:32:33,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:33,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:33,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:33,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118409058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:33,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 22:32:33,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231957106] [2021-10-13 22:32:33,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:32:33,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:32:33,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:32:33,610 INFO L87 Difference]: Start difference. First operand 1428 states and 3888 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:33,711 INFO L93 Difference]: Finished difference Result 2798 states and 7421 transitions. [2021-10-13 22:32:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:32:33,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:32:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:33,716 INFO L225 Difference]: With dead ends: 2798 [2021-10-13 22:32:33,716 INFO L226 Difference]: Without dead ends: 2528 [2021-10-13 22:32:33,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:32:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-10-13 22:32:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1608. [2021-10-13 22:32:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 2.7672682016179215) internal successors, (4447), 1607 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 4447 transitions. [2021-10-13 22:32:33,750 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 4447 transitions. Word has length 50 [2021-10-13 22:32:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:33,751 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 4447 transitions. [2021-10-13 22:32:33,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 4447 transitions. [2021-10-13 22:32:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 22:32:33,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:33,753 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:33,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:33,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,972 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1995871985, now seen corresponding path program 5 times [2021-10-13 22:32:33,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:33,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688833054] [2021-10-13 22:32:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:33,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:34,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:34,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688833054] [2021-10-13 22:32:34,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688833054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415754404] [2021-10-13 22:32:34,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:34,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:34,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 22:32:34,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:34,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:34,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:34,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:34,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415754404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:34,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 22:32:34,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410147000] [2021-10-13 22:32:34,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:34,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:34,313 INFO L87 Difference]: Start difference. First operand 1608 states and 4447 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:34,479 INFO L93 Difference]: Finished difference Result 2285 states and 6121 transitions. [2021-10-13 22:32:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:32:34,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 22:32:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:34,483 INFO L225 Difference]: With dead ends: 2285 [2021-10-13 22:32:34,483 INFO L226 Difference]: Without dead ends: 1706 [2021-10-13 22:32:34,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:32:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-10-13 22:32:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1313. [2021-10-13 22:32:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 2.7271341463414633) internal successors, (3578), 1312 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3578 transitions. [2021-10-13 22:32:34,508 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3578 transitions. Word has length 50 [2021-10-13 22:32:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:34,508 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 3578 transitions. [2021-10-13 22:32:34,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3578 transitions. [2021-10-13 22:32:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:34,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:34,517 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:34,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:34,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 22:32:34,733 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:34,734 INFO L82 PathProgramCache]: Analyzing trace with hash -98524776, now seen corresponding path program 6 times [2021-10-13 22:32:34,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:34,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146528951] [2021-10-13 22:32:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:34,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:34,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:34,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146528951] [2021-10-13 22:32:34,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146528951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293420615] [2021-10-13 22:32:34,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:34,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:34,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:34,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 22:32:34,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:32:34,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:34,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:34,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:35,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293420615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:35,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:35,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860120081] [2021-10-13 22:32:35,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:35,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:35,105 INFO L87 Difference]: Start difference. First operand 1313 states and 3578 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:35,210 INFO L93 Difference]: Finished difference Result 1931 states and 5017 transitions. [2021-10-13 22:32:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:35,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:35,213 INFO L225 Difference]: With dead ends: 1931 [2021-10-13 22:32:35,213 INFO L226 Difference]: Without dead ends: 1661 [2021-10-13 22:32:35,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-10-13 22:32:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1388. [2021-10-13 22:32:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.741888968997837) internal successors, (3803), 1387 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3803 transitions. [2021-10-13 22:32:35,234 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3803 transitions. Word has length 55 [2021-10-13 22:32:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:35,234 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 3803 transitions. [2021-10-13 22:32:35,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3803 transitions. [2021-10-13 22:32:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:35,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:35,236 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:35,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:35,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 22:32:35,451 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:35,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 33590920, now seen corresponding path program 7 times [2021-10-13 22:32:35,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:35,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203640349] [2021-10-13 22:32:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:35,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:35,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:35,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203640349] [2021-10-13 22:32:35,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203640349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533282009] [2021-10-13 22:32:35,526 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:35,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:35,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:35,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:35,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 22:32:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:35,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:35,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:35,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533282009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:35,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:35,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539323462] [2021-10-13 22:32:35,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:35,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:35,923 INFO L87 Difference]: Start difference. First operand 1388 states and 3803 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:36,077 INFO L93 Difference]: Finished difference Result 2111 states and 5497 transitions. [2021-10-13 22:32:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:36,080 INFO L225 Difference]: With dead ends: 2111 [2021-10-13 22:32:36,080 INFO L226 Difference]: Without dead ends: 1841 [2021-10-13 22:32:36,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-10-13 22:32:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1463. [2021-10-13 22:32:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 2.7688098495212037) internal successors, (4048), 1462 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4048 transitions. [2021-10-13 22:32:36,102 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4048 transitions. Word has length 55 [2021-10-13 22:32:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:36,102 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 4048 transitions. [2021-10-13 22:32:36,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4048 transitions. [2021-10-13 22:32:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:36,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:36,106 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:36,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:36,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 22:32:36,322 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:36,322 INFO L82 PathProgramCache]: Analyzing trace with hash -422791530, now seen corresponding path program 8 times [2021-10-13 22:32:36,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:36,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092096925] [2021-10-13 22:32:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:36,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:36,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:36,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092096925] [2021-10-13 22:32:36,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092096925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:36,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950479152] [2021-10-13 22:32:36,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:36,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:36,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:36,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 22:32:36,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:36,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:36,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:36,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950479152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:36,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:36,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:36,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880308599] [2021-10-13 22:32:36,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:36,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:36,751 INFO L87 Difference]: Start difference. First operand 1463 states and 4048 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:36,920 INFO L93 Difference]: Finished difference Result 2858 states and 7631 transitions. [2021-10-13 22:32:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:36,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:36,924 INFO L225 Difference]: With dead ends: 2858 [2021-10-13 22:32:36,925 INFO L226 Difference]: Without dead ends: 2588 [2021-10-13 22:32:36,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-10-13 22:32:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1643. [2021-10-13 22:32:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 2.805724725943971) internal successors, (4607), 1642 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 4607 transitions. [2021-10-13 22:32:36,951 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 4607 transitions. Word has length 55 [2021-10-13 22:32:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:36,951 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 4607 transitions. [2021-10-13 22:32:36,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4607 transitions. [2021-10-13 22:32:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:36,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:36,953 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:36,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:37,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 22:32:37,167 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash -357549240, now seen corresponding path program 9 times [2021-10-13 22:32:37,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:37,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071392195] [2021-10-13 22:32:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:37,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:37,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:37,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071392195] [2021-10-13 22:32:37,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071392195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676768524] [2021-10-13 22:32:37,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:37,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:37,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:37,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:37,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 22:32:37,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:32:37,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:37,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:37,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:37,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676768524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:37,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:37,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445405449] [2021-10-13 22:32:37,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:37,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:37,599 INFO L87 Difference]: Start difference. First operand 1643 states and 4607 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:37,833 INFO L93 Difference]: Finished difference Result 2726 states and 7296 transitions. [2021-10-13 22:32:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:37,833 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 22:32:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:37,837 INFO L225 Difference]: With dead ends: 2726 [2021-10-13 22:32:37,837 INFO L226 Difference]: Without dead ends: 2151 [2021-10-13 22:32:37,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 186.1ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:37,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-10-13 22:32:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1678. [2021-10-13 22:32:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.7924865831842576) internal successors, (4683), 1677 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4683 transitions. [2021-10-13 22:32:37,860 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4683 transitions. Word has length 55 [2021-10-13 22:32:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:37,860 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 4683 transitions. [2021-10-13 22:32:37,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4683 transitions. [2021-10-13 22:32:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:37,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:37,862 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:37,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:38,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 22:32:38,075 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash -903701778, now seen corresponding path program 10 times [2021-10-13 22:32:38,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:38,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293379013] [2021-10-13 22:32:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:38,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:38,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:38,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293379013] [2021-10-13 22:32:38,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293379013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:38,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211227108] [2021-10-13 22:32:38,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:38,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:38,175 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:38,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 22:32:38,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:38,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:38,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:38,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:38,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211227108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:38,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:38,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:38,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479915216] [2021-10-13 22:32:38,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:38,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:38,692 INFO L87 Difference]: Start difference. First operand 1678 states and 4683 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:38,855 INFO L93 Difference]: Finished difference Result 2468 states and 6583 transitions. [2021-10-13 22:32:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:38,859 INFO L225 Difference]: With dead ends: 2468 [2021-10-13 22:32:38,860 INFO L226 Difference]: Without dead ends: 2134 [2021-10-13 22:32:38,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:32:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2021-10-13 22:32:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1763. [2021-10-13 22:32:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.754256526674234) internal successors, (4853), 1762 states have internal predecessors, (4853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 4853 transitions. [2021-10-13 22:32:38,883 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 4853 transitions. Word has length 60 [2021-10-13 22:32:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:38,883 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 4853 transitions. [2021-10-13 22:32:38,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 4853 transitions. [2021-10-13 22:32:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:38,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:38,885 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:38,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:39,099 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:39,100 INFO L82 PathProgramCache]: Analyzing trace with hash 957486642, now seen corresponding path program 11 times [2021-10-13 22:32:39,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:39,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039149890] [2021-10-13 22:32:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:39,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:39,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:39,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039149890] [2021-10-13 22:32:39,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039149890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:39,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070437566] [2021-10-13 22:32:39,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:39,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:39,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:39,176 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:39,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 22:32:39,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:32:39,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:39,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:39,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:39,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070437566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:39,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:39,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 22:32:39,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142804124] [2021-10-13 22:32:39,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:39,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:39,645 INFO L87 Difference]: Start difference. First operand 1763 states and 4853 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:39,759 INFO L93 Difference]: Finished difference Result 2561 states and 6577 transitions. [2021-10-13 22:32:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:32:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:39,762 INFO L225 Difference]: With dead ends: 2561 [2021-10-13 22:32:39,762 INFO L226 Difference]: Without dead ends: 2291 [2021-10-13 22:32:39,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-10-13 22:32:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1778. [2021-10-13 22:32:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-10-13 22:32:39,784 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-10-13 22:32:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:39,784 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-10-13 22:32:39,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-10-13 22:32:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:39,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:39,786 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:39,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:40,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,009 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1587374302, now seen corresponding path program 12 times [2021-10-13 22:32:40,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:40,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088194529] [2021-10-13 22:32:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:40,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:40,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:40,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088194529] [2021-10-13 22:32:40,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088194529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:40,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129593258] [2021-10-13 22:32:40,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:40,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:40,089 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:40,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 22:32:40,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:32:40,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:40,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:40,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129593258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:40,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:40,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:40,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093308298] [2021-10-13 22:32:40,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:40,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:40,598 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:40,750 INFO L93 Difference]: Finished difference Result 2446 states and 6347 transitions. [2021-10-13 22:32:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:40,751 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:40,754 INFO L225 Difference]: With dead ends: 2446 [2021-10-13 22:32:40,754 INFO L226 Difference]: Without dead ends: 2176 [2021-10-13 22:32:40,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-10-13 22:32:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1778. [2021-10-13 22:32:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-10-13 22:32:40,774 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-10-13 22:32:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:40,774 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-10-13 22:32:40,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-10-13 22:32:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:40,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:40,776 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:40,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:40,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,987 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:40,988 INFO L82 PathProgramCache]: Analyzing trace with hash -677476944, now seen corresponding path program 13 times [2021-10-13 22:32:40,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:40,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599608998] [2021-10-13 22:32:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:40,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:41,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:41,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599608998] [2021-10-13 22:32:41,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599608998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:41,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234637370] [2021-10-13 22:32:41,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:41,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:41,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:41,061 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:41,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 22:32:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:41,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:41,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:41,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234637370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:41,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:41,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 22:32:41,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897360820] [2021-10-13 22:32:41,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:41,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:41,621 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:41,742 INFO L93 Difference]: Finished difference Result 2421 states and 6297 transitions. [2021-10-13 22:32:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:32:41,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:41,745 INFO L225 Difference]: With dead ends: 2421 [2021-10-13 22:32:41,745 INFO L226 Difference]: Without dead ends: 2151 [2021-10-13 22:32:41,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:32:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-10-13 22:32:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1778. [2021-10-13 22:32:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-10-13 22:32:41,765 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-10-13 22:32:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:41,766 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-10-13 22:32:41,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-10-13 22:32:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:41,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:41,768 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:41,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:41,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 22:32:41,983 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:41,984 INFO L82 PathProgramCache]: Analyzing trace with hash -545361248, now seen corresponding path program 14 times [2021-10-13 22:32:41,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:41,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053560182] [2021-10-13 22:32:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:41,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:42,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:42,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053560182] [2021-10-13 22:32:42,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053560182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:42,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815962031] [2021-10-13 22:32:42,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:42,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:42,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:42,059 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:42,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 22:32:42,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:42,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:42,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:42,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:42,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815962031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:42,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:42,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:42,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127457283] [2021-10-13 22:32:42,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:42,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:42,595 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:42,796 INFO L93 Difference]: Finished difference Result 2431 states and 6347 transitions. [2021-10-13 22:32:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:42,799 INFO L225 Difference]: With dead ends: 2431 [2021-10-13 22:32:42,799 INFO L226 Difference]: Without dead ends: 2161 [2021-10-13 22:32:42,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:32:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-10-13 22:32:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1778. [2021-10-13 22:32:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7507034327518287) internal successors, (4888), 1777 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4888 transitions. [2021-10-13 22:32:42,820 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4888 transitions. Word has length 60 [2021-10-13 22:32:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:42,820 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 4888 transitions. [2021-10-13 22:32:42,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4888 transitions. [2021-10-13 22:32:42,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:42,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:42,822 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:42,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:43,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:43,038 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1001743698, now seen corresponding path program 15 times [2021-10-13 22:32:43,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:43,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309345889] [2021-10-13 22:32:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:43,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:43,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:43,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309345889] [2021-10-13 22:32:43,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309345889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:43,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985917712] [2021-10-13 22:32:43,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:43,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:43,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:43,109 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:43,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 22:32:43,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:32:43,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:43,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:43,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:43,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985917712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:43,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:43,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 22:32:43,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662368200] [2021-10-13 22:32:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:43,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:43,616 INFO L87 Difference]: Start difference. First operand 1778 states and 4888 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:43,770 INFO L93 Difference]: Finished difference Result 3198 states and 8521 transitions. [2021-10-13 22:32:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:43,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:43,774 INFO L225 Difference]: With dead ends: 3198 [2021-10-13 22:32:43,774 INFO L226 Difference]: Without dead ends: 2928 [2021-10-13 22:32:43,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-10-13 22:32:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1958. [2021-10-13 22:32:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 2.783341849770056) internal successors, (5447), 1957 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 5447 transitions. [2021-10-13 22:32:43,800 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 5447 transitions. Word has length 60 [2021-10-13 22:32:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:43,800 INFO L470 AbstractCegarLoop]: Abstraction has 1958 states and 5447 transitions. [2021-10-13 22:32:43,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 5447 transitions. [2021-10-13 22:32:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 22:32:43,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:43,802 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:43,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:44,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:44,019 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -936501408, now seen corresponding path program 16 times [2021-10-13 22:32:44,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:44,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896325983] [2021-10-13 22:32:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:44,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:44,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:44,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896325983] [2021-10-13 22:32:44,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896325983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:44,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127098076] [2021-10-13 22:32:44,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:44,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:44,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:44,087 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:44,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 22:32:44,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:44,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:44,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:44,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127098076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:44,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:44,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-13 22:32:44,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72857599] [2021-10-13 22:32:44,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:44,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:44,597 INFO L87 Difference]: Start difference. First operand 1958 states and 5447 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:44,847 INFO L93 Difference]: Finished difference Result 3021 states and 8021 transitions. [2021-10-13 22:32:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:44,847 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 22:32:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:44,850 INFO L225 Difference]: With dead ends: 3021 [2021-10-13 22:32:44,850 INFO L226 Difference]: Without dead ends: 2446 [2021-10-13 22:32:44,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 222.4ms TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-10-13 22:32:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1603. [2021-10-13 22:32:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.7265917602996255) internal successors, (4368), 1602 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4368 transitions. [2021-10-13 22:32:44,906 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4368 transitions. Word has length 60 [2021-10-13 22:32:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:44,906 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4368 transitions. [2021-10-13 22:32:44,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4368 transitions. [2021-10-13 22:32:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:44,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:44,908 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:44,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:45,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:45,131 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash 902265289, now seen corresponding path program 17 times [2021-10-13 22:32:45,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:45,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449913799] [2021-10-13 22:32:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:45,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:45,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:45,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449913799] [2021-10-13 22:32:45,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449913799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:45,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159166262] [2021-10-13 22:32:45,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:45,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:45,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:45,219 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:45,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 22:32:45,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:45,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:45,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:45,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:45,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159166262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:45,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:45,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:45,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396775873] [2021-10-13 22:32:45,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:45,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:45,782 INFO L87 Difference]: Start difference. First operand 1603 states and 4368 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:45,916 INFO L93 Difference]: Finished difference Result 2321 states and 6007 transitions. [2021-10-13 22:32:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:45,917 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:45,919 INFO L225 Difference]: With dead ends: 2321 [2021-10-13 22:32:45,919 INFO L226 Difference]: Without dead ends: 2051 [2021-10-13 22:32:45,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-10-13 22:32:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1678. [2021-10-13 22:32:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.738819320214669) internal successors, (4593), 1677 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4593 transitions. [2021-10-13 22:32:45,938 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4593 transitions. Word has length 65 [2021-10-13 22:32:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:45,938 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 4593 transitions. [2021-10-13 22:32:45,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4593 transitions. [2021-10-13 22:32:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:45,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:45,940 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:45,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:46,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 22:32:46,146 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1642595655, now seen corresponding path program 18 times [2021-10-13 22:32:46,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:46,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955717507] [2021-10-13 22:32:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:46,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:46,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:46,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955717507] [2021-10-13 22:32:46,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955717507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:46,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669027529] [2021-10-13 22:32:46,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:46,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:46,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:46,229 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:46,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 22:32:46,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:46,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:46,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:46,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:46,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669027529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:46,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:46,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:46,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252791872] [2021-10-13 22:32:46,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:46,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:46,836 INFO L87 Difference]: Start difference. First operand 1678 states and 4593 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:47,002 INFO L93 Difference]: Finished difference Result 2491 states and 6422 transitions. [2021-10-13 22:32:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:47,004 INFO L225 Difference]: With dead ends: 2491 [2021-10-13 22:32:47,004 INFO L226 Difference]: Without dead ends: 2221 [2021-10-13 22:32:47,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-10-13 22:32:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1753. [2021-10-13 22:32:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 2.75) internal successors, (4818), 1752 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 4818 transitions. [2021-10-13 22:32:47,027 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 4818 transitions. Word has length 65 [2021-10-13 22:32:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:47,027 INFO L470 AbstractCegarLoop]: Abstraction has 1753 states and 4818 transitions. [2021-10-13 22:32:47,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 4818 transitions. [2021-10-13 22:32:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:47,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:47,029 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:47,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:47,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 22:32:47,243 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash -732698297, now seen corresponding path program 19 times [2021-10-13 22:32:47,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:47,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343808267] [2021-10-13 22:32:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:47,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:47,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:47,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343808267] [2021-10-13 22:32:47,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343808267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:47,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675099316] [2021-10-13 22:32:47,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:47,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:47,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:47,321 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:47,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 22:32:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:47,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:47,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:47,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675099316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:47,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:47,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:47,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064312292] [2021-10-13 22:32:47,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:47,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:47,879 INFO L87 Difference]: Start difference. First operand 1753 states and 4818 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:48,036 INFO L93 Difference]: Finished difference Result 2566 states and 6677 transitions. [2021-10-13 22:32:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:48,039 INFO L225 Difference]: With dead ends: 2566 [2021-10-13 22:32:48,039 INFO L226 Difference]: Without dead ends: 2296 [2021-10-13 22:32:48,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2021-10-13 22:32:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1828. [2021-10-13 22:32:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 2.768472906403941) internal successors, (5058), 1827 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 5058 transitions. [2021-10-13 22:32:48,082 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 5058 transitions. Word has length 65 [2021-10-13 22:32:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:48,082 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 5058 transitions. [2021-10-13 22:32:48,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 5058 transitions. [2021-10-13 22:32:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:48,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:48,084 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:48,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:48,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 22:32:48,299 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:48,300 INFO L82 PathProgramCache]: Analyzing trace with hash -600582601, now seen corresponding path program 20 times [2021-10-13 22:32:48,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:48,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419212721] [2021-10-13 22:32:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:48,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:48,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:48,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419212721] [2021-10-13 22:32:48,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419212721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:48,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627882202] [2021-10-13 22:32:48,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:48,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:48,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:48,380 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:48,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 22:32:48,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:48,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:48,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:48,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:48,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627882202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:48,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:48,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:48,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100665475] [2021-10-13 22:32:48,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:48,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:48,977 INFO L87 Difference]: Start difference. First operand 1828 states and 5058 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:49,224 INFO L93 Difference]: Finished difference Result 3144 states and 8303 transitions. [2021-10-13 22:32:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:49,227 INFO L225 Difference]: With dead ends: 3144 [2021-10-13 22:32:49,227 INFO L226 Difference]: Without dead ends: 2521 [2021-10-13 22:32:49,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 210.7ms TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-10-13 22:32:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1903. [2021-10-13 22:32:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.780231335436383) internal successors, (5288), 1902 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5288 transitions. [2021-10-13 22:32:49,248 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5288 transitions. Word has length 65 [2021-10-13 22:32:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:49,248 INFO L470 AbstractCegarLoop]: Abstraction has 1903 states and 5288 transitions. [2021-10-13 22:32:49,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5288 transitions. [2021-10-13 22:32:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:49,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:49,250 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:49,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 22:32:49,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:49,467 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1056965051, now seen corresponding path program 21 times [2021-10-13 22:32:49,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:49,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411007580] [2021-10-13 22:32:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:49,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:49,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:49,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411007580] [2021-10-13 22:32:49,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411007580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:49,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262663217] [2021-10-13 22:32:49,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:49,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:49,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:49,542 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:49,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 22:32:50,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:50,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:50,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:50,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:50,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262663217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:50,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:50,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:50,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103597401] [2021-10-13 22:32:50,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:50,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:50,170 INFO L87 Difference]: Start difference. First operand 1903 states and 5288 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:50,387 INFO L93 Difference]: Finished difference Result 3348 states and 8971 transitions. [2021-10-13 22:32:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:50,392 INFO L225 Difference]: With dead ends: 3348 [2021-10-13 22:32:50,392 INFO L226 Difference]: Without dead ends: 3078 [2021-10-13 22:32:50,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:32:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-10-13 22:32:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2083. [2021-10-13 22:32:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.80835734870317) internal successors, (5847), 2082 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5847 transitions. [2021-10-13 22:32:50,416 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5847 transitions. Word has length 65 [2021-10-13 22:32:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5847 transitions. [2021-10-13 22:32:50,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5847 transitions. [2021-10-13 22:32:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:50,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:50,418 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:50,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-13 22:32:50,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:50,621 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash -991722761, now seen corresponding path program 22 times [2021-10-13 22:32:50,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:50,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083301330] [2021-10-13 22:32:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:50,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:50,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:50,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083301330] [2021-10-13 22:32:50,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083301330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:50,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281993595] [2021-10-13 22:32:50,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:50,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:50,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:50,687 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:50,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 22:32:51,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:51,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:51,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:51,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:51,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281993595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:51,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:51,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:51,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666495676] [2021-10-13 22:32:51,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:51,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:51,303 INFO L87 Difference]: Start difference. First operand 2083 states and 5847 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:51,579 INFO L93 Difference]: Finished difference Result 3216 states and 8636 transitions. [2021-10-13 22:32:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 22:32:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:51,582 INFO L225 Difference]: With dead ends: 3216 [2021-10-13 22:32:51,582 INFO L226 Difference]: Without dead ends: 2641 [2021-10-13 22:32:51,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 237.7ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:51,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-10-13 22:32:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 1524. [2021-10-13 22:32:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.7288246881155613) internal successors, (4156), 1523 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4156 transitions. [2021-10-13 22:32:51,600 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4156 transitions. Word has length 65 [2021-10-13 22:32:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:51,600 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 4156 transitions. [2021-10-13 22:32:51,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4156 transitions. [2021-10-13 22:32:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:51,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:51,602 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:51,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:51,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 22:32:51,811 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash 792346527, now seen corresponding path program 23 times [2021-10-13 22:32:51,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:51,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945571303] [2021-10-13 22:32:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:51,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:51,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:51,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945571303] [2021-10-13 22:32:51,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945571303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:51,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848396431] [2021-10-13 22:32:51,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:51,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:51,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:51,930 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:51,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 22:32:52,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:52,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:52,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:52,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:52,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848396431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:52,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:52,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-13 22:32:52,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144259014] [2021-10-13 22:32:52,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:52,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:52,692 INFO L87 Difference]: Start difference. First operand 1524 states and 4156 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:52,869 INFO L93 Difference]: Finished difference Result 2364 states and 6156 transitions. [2021-10-13 22:32:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:52,870 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:52,872 INFO L225 Difference]: With dead ends: 2364 [2021-10-13 22:32:52,872 INFO L226 Difference]: Without dead ends: 2030 [2021-10-13 22:32:52,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-10-13 22:32:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1609. [2021-10-13 22:32:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.6902985074626864) internal successors, (4326), 1608 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4326 transitions. [2021-10-13 22:32:52,899 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4326 transitions. Word has length 70 [2021-10-13 22:32:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:52,899 INFO L470 AbstractCegarLoop]: Abstraction has 1609 states and 4326 transitions. [2021-10-13 22:32:52,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4326 transitions. [2021-10-13 22:32:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:52,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:52,901 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:52,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-13 22:32:53,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 22:32:53,106 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:53,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1846244835, now seen corresponding path program 24 times [2021-10-13 22:32:53,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:53,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143631907] [2021-10-13 22:32:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:53,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:53,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:53,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143631907] [2021-10-13 22:32:53,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143631907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:53,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364943545] [2021-10-13 22:32:53,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:53,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:53,209 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:53,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 22:32:53,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:53,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:53,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:53,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:53,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364943545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:53,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:53,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:53,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569115773] [2021-10-13 22:32:53,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:53,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:53,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:53,938 INFO L87 Difference]: Start difference. First operand 1609 states and 4326 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:54,062 INFO L93 Difference]: Finished difference Result 2686 states and 6737 transitions. [2021-10-13 22:32:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:54,065 INFO L225 Difference]: With dead ends: 2686 [2021-10-13 22:32:54,065 INFO L226 Difference]: Without dead ends: 2416 [2021-10-13 22:32:54,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-10-13 22:32:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1753. [2021-10-13 22:32:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 2.7071917808219177) internal successors, (4743), 1752 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 4743 transitions. [2021-10-13 22:32:54,085 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 4743 transitions. Word has length 70 [2021-10-13 22:32:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:54,085 INFO L470 AbstractCegarLoop]: Abstraction has 1753 states and 4743 transitions. [2021-10-13 22:32:54,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 4743 transitions. [2021-10-13 22:32:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:54,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:54,088 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:54,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:54,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:54,318 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:54,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1574729005, now seen corresponding path program 25 times [2021-10-13 22:32:54,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908856773] [2021-10-13 22:32:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:54,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:54,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:54,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908856773] [2021-10-13 22:32:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908856773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:54,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193740382] [2021-10-13 22:32:54,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:54,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:54,429 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:54,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 22:32:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:54,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:54,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:55,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193740382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:55,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:55,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:32:55,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587151029] [2021-10-13 22:32:55,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:55,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:55,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:55,190 INFO L87 Difference]: Start difference. First operand 1753 states and 4743 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:55,374 INFO L93 Difference]: Finished difference Result 2646 states and 6732 transitions. [2021-10-13 22:32:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:55,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:55,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:55,377 INFO L225 Difference]: With dead ends: 2646 [2021-10-13 22:32:55,377 INFO L226 Difference]: Without dead ends: 2376 [2021-10-13 22:32:55,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 175.7ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-10-13 22:32:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1828. [2021-10-13 22:32:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 2.7192118226600983) internal successors, (4968), 1827 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 4968 transitions. [2021-10-13 22:32:55,397 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 4968 transitions. Word has length 70 [2021-10-13 22:32:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:55,397 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 4968 transitions. [2021-10-13 22:32:55,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 4968 transitions. [2021-10-13 22:32:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:55,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:55,399 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:55,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:55,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:55,615 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:55,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1079435295, now seen corresponding path program 26 times [2021-10-13 22:32:55,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:55,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130383143] [2021-10-13 22:32:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:55,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:55,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:55,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130383143] [2021-10-13 22:32:55,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130383143] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:55,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361621678] [2021-10-13 22:32:55,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:55,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:55,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:55,699 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:55,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 22:32:56,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:56,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:56,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:56,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:56,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361621678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:56,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:56,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:56,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687521856] [2021-10-13 22:32:56,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:56,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:56,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:56,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:56,469 INFO L87 Difference]: Start difference. First operand 1828 states and 4968 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:56,618 INFO L93 Difference]: Finished difference Result 2696 states and 6907 transitions. [2021-10-13 22:32:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:56,621 INFO L225 Difference]: With dead ends: 2696 [2021-10-13 22:32:56,621 INFO L226 Difference]: Without dead ends: 2426 [2021-10-13 22:32:56,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:32:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-10-13 22:32:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1903. [2021-10-13 22:32:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.730283911671924) internal successors, (5193), 1902 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5193 transitions. [2021-10-13 22:32:56,642 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5193 transitions. Word has length 70 [2021-10-13 22:32:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:56,643 INFO L470 AbstractCegarLoop]: Abstraction has 1903 states and 5193 transitions. [2021-10-13 22:32:56,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5193 transitions. [2021-10-13 22:32:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:56,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:56,645 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:56,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-13 22:32:56,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:56,847 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash 670671057, now seen corresponding path program 27 times [2021-10-13 22:32:56,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:56,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360329999] [2021-10-13 22:32:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:56,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:56,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:56,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360329999] [2021-10-13 22:32:56,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360329999] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:56,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135165745] [2021-10-13 22:32:56,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:56,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:56,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:56,947 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:56,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 22:32:57,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:57,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:57,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:32:57,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:57,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135165745] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:57,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:57,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:32:57,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208776607] [2021-10-13 22:32:57,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:57,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:57,727 INFO L87 Difference]: Start difference. First operand 1903 states and 5193 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:57,931 INFO L93 Difference]: Finished difference Result 2721 states and 7032 transitions. [2021-10-13 22:32:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:57,934 INFO L225 Difference]: With dead ends: 2721 [2021-10-13 22:32:57,934 INFO L226 Difference]: Without dead ends: 2451 [2021-10-13 22:32:57,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 197.2ms TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-10-13 22:32:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1978. [2021-10-13 22:32:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 2.74051593323217) internal successors, (5418), 1977 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 5418 transitions. [2021-10-13 22:32:57,955 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 5418 transitions. Word has length 70 [2021-10-13 22:32:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:57,955 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 5418 transitions. [2021-10-13 22:32:57,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5418 transitions. [2021-10-13 22:32:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:57,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:57,958 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:57,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:58,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 22:32:58,158 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1580568415, now seen corresponding path program 28 times [2021-10-13 22:32:58,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:58,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13590342] [2021-10-13 22:32:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:58,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:58,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:58,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13590342] [2021-10-13 22:32:58,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13590342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:58,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958838806] [2021-10-13 22:32:58,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:58,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:58,239 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:58,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 22:32:58,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:58,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:58,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:58,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:59,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958838806] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:59,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:59,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:59,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508116154] [2021-10-13 22:32:59,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:59,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:59,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:59,011 INFO L87 Difference]: Start difference. First operand 1978 states and 5418 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:59,182 INFO L93 Difference]: Finished difference Result 2791 states and 7277 transitions. [2021-10-13 22:32:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:32:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:59,185 INFO L225 Difference]: With dead ends: 2791 [2021-10-13 22:32:59,185 INFO L226 Difference]: Without dead ends: 2521 [2021-10-13 22:32:59,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-10-13 22:32:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2053. [2021-10-13 22:32:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 2.757309941520468) internal successors, (5658), 2052 states have internal predecessors, (5658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 5658 transitions. [2021-10-13 22:32:59,220 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 5658 transitions. Word has length 70 [2021-10-13 22:32:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:59,220 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 5658 transitions. [2021-10-13 22:32:59,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 5658 transitions. [2021-10-13 22:32:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:32:59,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:59,222 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:59,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:59,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 22:32:59,423 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:59,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:59,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1712684111, now seen corresponding path program 29 times [2021-10-13 22:32:59,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:59,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400710515] [2021-10-13 22:32:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:59,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:59,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:59,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400710515] [2021-10-13 22:32:59,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400710515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:59,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628501496] [2021-10-13 22:32:59,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:59,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:59,505 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:32:59,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 22:33:00,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:33:00,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:00,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:00,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:00,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628501496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:00,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:00,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:33:00,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279845562] [2021-10-13 22:33:00,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:00,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:00,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:00,301 INFO L87 Difference]: Start difference. First operand 2053 states and 5658 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:00,564 INFO L93 Difference]: Finished difference Result 3369 states and 8903 transitions. [2021-10-13 22:33:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:33:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:00,567 INFO L225 Difference]: With dead ends: 3369 [2021-10-13 22:33:00,568 INFO L226 Difference]: Without dead ends: 2746 [2021-10-13 22:33:00,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 227.0ms TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-10-13 22:33:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2128. [2021-10-13 22:33:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.768218147625764) internal successors, (5888), 2127 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5888 transitions. [2021-10-13 22:33:00,591 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5888 transitions. Word has length 70 [2021-10-13 22:33:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:00,591 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5888 transitions. [2021-10-13 22:33:00,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5888 transitions. [2021-10-13 22:33:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:33:00,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:00,594 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:00,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 22:33:00,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 22:33:00,802 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:00,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1256301661, now seen corresponding path program 30 times [2021-10-13 22:33:00,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:00,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584119602] [2021-10-13 22:33:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:00,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:00,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:00,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584119602] [2021-10-13 22:33:00,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584119602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:00,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550529770] [2021-10-13 22:33:00,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:00,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:00,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:00,890 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:00,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 22:33:01,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:33:01,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:01,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:33:01,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:01,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550529770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:01,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:01,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:33:01,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736242318] [2021-10-13 22:33:01,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:01,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:01,737 INFO L87 Difference]: Start difference. First operand 2128 states and 5888 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:01,948 INFO L93 Difference]: Finished difference Result 3598 states and 9621 transitions. [2021-10-13 22:33:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:33:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:01,953 INFO L225 Difference]: With dead ends: 3598 [2021-10-13 22:33:01,953 INFO L226 Difference]: Without dead ends: 3328 [2021-10-13 22:33:01,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 176.5ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2021-10-13 22:33:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 2308. [2021-10-13 22:33:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 2.7945383615084527) internal successors, (6447), 2307 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 6447 transitions. [2021-10-13 22:33:01,985 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 6447 transitions. Word has length 70 [2021-10-13 22:33:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:01,985 INFO L470 AbstractCegarLoop]: Abstraction has 2308 states and 6447 transitions. [2021-10-13 22:33:01,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 6447 transitions. [2021-10-13 22:33:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 22:33:01,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:01,988 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:02,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:02,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 22:33:02,189 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:02,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1321543951, now seen corresponding path program 31 times [2021-10-13 22:33:02,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:02,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350466059] [2021-10-13 22:33:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:02,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:02,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:02,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350466059] [2021-10-13 22:33:02,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350466059] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:02,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604261305] [2021-10-13 22:33:02,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:02,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:02,262 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:02,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 22:33:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:02,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:02,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:03,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604261305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:03,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:03,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:33:03,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960755746] [2021-10-13 22:33:03,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:03,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:03,120 INFO L87 Difference]: Start difference. First operand 2308 states and 6447 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:03,430 INFO L93 Difference]: Finished difference Result 3421 states and 9121 transitions. [2021-10-13 22:33:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:33:03,430 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 22:33:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:03,434 INFO L225 Difference]: With dead ends: 3421 [2021-10-13 22:33:03,434 INFO L226 Difference]: Without dead ends: 2846 [2021-10-13 22:33:03,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 267.7ms TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-10-13 22:33:03,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1803. [2021-10-13 22:33:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 2.7291897891231964) internal successors, (4918), 1802 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 4918 transitions. [2021-10-13 22:33:03,455 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 4918 transitions. Word has length 70 [2021-10-13 22:33:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:03,455 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 4918 transitions. [2021-10-13 22:33:03,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 4918 transitions. [2021-10-13 22:33:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:03,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:03,457 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:03,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-13 22:33:03,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 22:33:03,658 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:03,658 INFO L82 PathProgramCache]: Analyzing trace with hash 277252282, now seen corresponding path program 32 times [2021-10-13 22:33:03,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:03,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476713551] [2021-10-13 22:33:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:03,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:03,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:03,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476713551] [2021-10-13 22:33:03,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476713551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:03,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5521162] [2021-10-13 22:33:03,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:03,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:03,763 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:03,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 22:33:04,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:04,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:04,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:33:04,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5521162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:04,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:04,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 22:33:04,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383048090] [2021-10-13 22:33:04,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:04,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:04,702 INFO L87 Difference]: Start difference. First operand 1803 states and 4918 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:04,877 INFO L93 Difference]: Finished difference Result 2621 states and 6757 transitions. [2021-10-13 22:33:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:33:04,882 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:04,885 INFO L225 Difference]: With dead ends: 2621 [2021-10-13 22:33:04,885 INFO L226 Difference]: Without dead ends: 2351 [2021-10-13 22:33:04,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:33:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-10-13 22:33:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1878. [2021-10-13 22:33:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.7400106553010124) internal successors, (5143), 1877 states have internal predecessors, (5143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 5143 transitions. [2021-10-13 22:33:04,908 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 5143 transitions. Word has length 75 [2021-10-13 22:33:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:04,908 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 5143 transitions. [2021-10-13 22:33:04,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 5143 transitions. [2021-10-13 22:33:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:04,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:04,910 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:04,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:05,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:05,123 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:05,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1151245738, now seen corresponding path program 33 times [2021-10-13 22:33:05,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:05,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190759261] [2021-10-13 22:33:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:05,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:05,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:05,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190759261] [2021-10-13 22:33:05,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190759261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:05,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047204635] [2021-10-13 22:33:05,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:05,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:05,247 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:05,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 22:33:05,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:33:05,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:05,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:33:05,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:06,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047204635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:06,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:33:06,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777250151] [2021-10-13 22:33:06,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:06,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:06,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:06,208 INFO L87 Difference]: Start difference. First operand 1878 states and 5143 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:06,405 INFO L93 Difference]: Finished difference Result 2841 states and 7272 transitions. [2021-10-13 22:33:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:06,408 INFO L225 Difference]: With dead ends: 2841 [2021-10-13 22:33:06,408 INFO L226 Difference]: Without dead ends: 2571 [2021-10-13 22:33:06,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 194.2ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-10-13 22:33:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1953. [2021-10-13 22:33:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.75) internal successors, (5368), 1952 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5368 transitions. [2021-10-13 22:33:06,430 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5368 transitions. Word has length 75 [2021-10-13 22:33:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:06,430 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 5368 transitions. [2021-10-13 22:33:06,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5368 transitions. [2021-10-13 22:33:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:06,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:06,432 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:06,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:06,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:06,633 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1646539448, now seen corresponding path program 34 times [2021-10-13 22:33:06,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:06,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118055621] [2021-10-13 22:33:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:06,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:06,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:06,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118055621] [2021-10-13 22:33:06,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118055621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556836134] [2021-10-13 22:33:06,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:06,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:06,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:06,717 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:06,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 22:33:07,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:07,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:07,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:33:07,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:07,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556836134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:07,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:07,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 22:33:07,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603319574] [2021-10-13 22:33:07,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:07,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:07,705 INFO L87 Difference]: Start difference. First operand 1953 states and 5368 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:07,883 INFO L93 Difference]: Finished difference Result 2871 states and 7407 transitions. [2021-10-13 22:33:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:07,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:07,886 INFO L225 Difference]: With dead ends: 2871 [2021-10-13 22:33:07,886 INFO L226 Difference]: Without dead ends: 2601 [2021-10-13 22:33:07,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 158.2ms TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-10-13 22:33:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2028. [2021-10-13 22:33:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.759250123334978) internal successors, (5593), 2027 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5593 transitions. [2021-10-13 22:33:07,910 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5593 transitions. Word has length 75 [2021-10-13 22:33:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:07,911 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 5593 transitions. [2021-10-13 22:33:07,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5593 transitions. [2021-10-13 22:33:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:07,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:07,914 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:07,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:08,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:08,132 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash -898321496, now seen corresponding path program 35 times [2021-10-13 22:33:08,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:08,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020315985] [2021-10-13 22:33:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:08,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:08,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:08,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020315985] [2021-10-13 22:33:08,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020315985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:08,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564639958] [2021-10-13 22:33:08,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:08,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:08,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:08,237 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:08,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 22:33:09,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:33:09,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:33:09,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:09,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564639958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:09,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:09,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:33:09,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87671780] [2021-10-13 22:33:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:09,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:09,244 INFO L87 Difference]: Start difference. First operand 2028 states and 5593 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:09,497 INFO L93 Difference]: Finished difference Result 2896 states and 7532 transitions. [2021-10-13 22:33:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:09,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:09,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:09,501 INFO L225 Difference]: With dead ends: 2896 [2021-10-13 22:33:09,501 INFO L226 Difference]: Without dead ends: 2626 [2021-10-13 22:33:09,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 244.4ms TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-10-13 22:33:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2103. [2021-10-13 22:33:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7678401522359657) internal successors, (5818), 2102 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5818 transitions. [2021-10-13 22:33:09,524 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5818 transitions. Word has length 75 [2021-10-13 22:33:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:09,524 INFO L470 AbstractCegarLoop]: Abstraction has 2103 states and 5818 transitions. [2021-10-13 22:33:09,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5818 transitions. [2021-10-13 22:33:09,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:09,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:09,526 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:09,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-13 22:33:09,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-13 22:33:09,727 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:09,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:09,727 INFO L82 PathProgramCache]: Analyzing trace with hash 11575862, now seen corresponding path program 36 times [2021-10-13 22:33:09,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:09,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591323218] [2021-10-13 22:33:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:09,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:09,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:09,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591323218] [2021-10-13 22:33:09,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591323218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:09,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081375570] [2021-10-13 22:33:09,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:09,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:09,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:09,810 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:09,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 22:33:10,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:33:10,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:10,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:10,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081375570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:10,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:10,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 22:33:10,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290594512] [2021-10-13 22:33:10,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:10,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:10,800 INFO L87 Difference]: Start difference. First operand 2103 states and 5818 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:11,012 INFO L93 Difference]: Finished difference Result 2966 states and 7777 transitions. [2021-10-13 22:33:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:11,012 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:11,015 INFO L225 Difference]: With dead ends: 2966 [2021-10-13 22:33:11,015 INFO L226 Difference]: Without dead ends: 2696 [2021-10-13 22:33:11,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 182.8ms TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-10-13 22:33:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2178. [2021-10-13 22:33:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.782728525493799) internal successors, (6058), 2177 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 6058 transitions. [2021-10-13 22:33:11,040 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 6058 transitions. Word has length 75 [2021-10-13 22:33:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:11,040 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 6058 transitions. [2021-10-13 22:33:11,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 6058 transitions. [2021-10-13 22:33:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:11,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:11,042 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:11,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-13 22:33:11,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 22:33:11,243 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash 143691558, now seen corresponding path program 37 times [2021-10-13 22:33:11,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:11,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180223674] [2021-10-13 22:33:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:11,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:11,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:11,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180223674] [2021-10-13 22:33:11,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180223674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:11,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462216244] [2021-10-13 22:33:11,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:11,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:11,355 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:11,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 22:33:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:12,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:33:12,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:12,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462216244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:12,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:12,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:33:12,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053904091] [2021-10-13 22:33:12,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:12,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:12,352 INFO L87 Difference]: Start difference. First operand 2178 states and 6058 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:12,668 INFO L93 Difference]: Finished difference Result 3544 states and 9403 transitions. [2021-10-13 22:33:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:33:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:12,671 INFO L225 Difference]: With dead ends: 3544 [2021-10-13 22:33:12,671 INFO L226 Difference]: Without dead ends: 2921 [2021-10-13 22:33:12,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 248.3ms TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-10-13 22:33:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2253. [2021-10-13 22:33:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.7921847246891653) internal successors, (6288), 2252 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6288 transitions. [2021-10-13 22:33:12,697 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6288 transitions. Word has length 75 [2021-10-13 22:33:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:12,697 INFO L470 AbstractCegarLoop]: Abstraction has 2253 states and 6288 transitions. [2021-10-13 22:33:12,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6288 transitions. [2021-10-13 22:33:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:12,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:12,700 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:12,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:12,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-13 22:33:12,900 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:12,900 INFO L82 PathProgramCache]: Analyzing trace with hash -312690892, now seen corresponding path program 38 times [2021-10-13 22:33:12,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:12,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494714868] [2021-10-13 22:33:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:12,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:12,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494714868] [2021-10-13 22:33:12,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494714868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681796691] [2021-10-13 22:33:12,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:12,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:12,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:12,999 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:13,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 22:33:13,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:13,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:13,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:13,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681796691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:14,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:14,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 22:33:14,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503048119] [2021-10-13 22:33:14,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:14,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:14,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:14,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:14,049 INFO L87 Difference]: Start difference. First operand 2253 states and 6288 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:14,282 INFO L93 Difference]: Finished difference Result 3748 states and 10071 transitions. [2021-10-13 22:33:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:14,287 INFO L225 Difference]: With dead ends: 3748 [2021-10-13 22:33:14,287 INFO L226 Difference]: Without dead ends: 3478 [2021-10-13 22:33:14,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 198.7ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-10-13 22:33:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2433. [2021-10-13 22:33:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 2.815378289473684) internal successors, (6847), 2432 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 6847 transitions. [2021-10-13 22:33:14,314 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 6847 transitions. Word has length 75 [2021-10-13 22:33:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:14,315 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 6847 transitions. [2021-10-13 22:33:14,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 6847 transitions. [2021-10-13 22:33:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:14,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:14,317 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:14,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-13 22:33:14,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 22:33:14,518 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:14,518 INFO L82 PathProgramCache]: Analyzing trace with hash -247448602, now seen corresponding path program 39 times [2021-10-13 22:33:14,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:14,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915965490] [2021-10-13 22:33:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:14,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:14,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:14,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915965490] [2021-10-13 22:33:14,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915965490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:14,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767557519] [2021-10-13 22:33:14,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:14,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:14,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:14,601 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:14,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 22:33:15,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:33:15,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:15,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:15,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767557519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:15,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:15,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:33:15,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393664453] [2021-10-13 22:33:15,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:15,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:15,650 INFO L87 Difference]: Start difference. First operand 2433 states and 6847 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:15,931 INFO L93 Difference]: Finished difference Result 3210 states and 8721 transitions. [2021-10-13 22:33:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:15,931 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 22:33:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:15,934 INFO L225 Difference]: With dead ends: 3210 [2021-10-13 22:33:15,934 INFO L226 Difference]: Without dead ends: 2721 [2021-10-13 22:33:15,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 245.3ms TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2021-10-13 22:33:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2378. [2021-10-13 22:33:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.8115271350441735) internal successors, (6683), 2377 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6683 transitions. [2021-10-13 22:33:15,979 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6683 transitions. Word has length 75 [2021-10-13 22:33:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:15,979 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 6683 transitions. [2021-10-13 22:33:15,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6683 transitions. [2021-10-13 22:33:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:15,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:15,982 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:16,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:16,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:16,182 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash -667649264, now seen corresponding path program 40 times [2021-10-13 22:33:16,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:16,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917259153] [2021-10-13 22:33:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:16,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:16,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:16,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917259153] [2021-10-13 22:33:16,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917259153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:16,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756669263] [2021-10-13 22:33:16,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:16,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:16,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:16,320 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:16,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 22:33:17,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:17,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:17,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:17,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:17,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756669263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:17,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:17,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-10-13 22:33:17,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641387037] [2021-10-13 22:33:17,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:33:17,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:17,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:33:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:33:17,561 INFO L87 Difference]: Start difference. First operand 2378 states and 6683 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:17,786 INFO L93 Difference]: Finished difference Result 3268 states and 8783 transitions. [2021-10-13 22:33:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:17,790 INFO L225 Difference]: With dead ends: 3268 [2021-10-13 22:33:17,791 INFO L226 Difference]: Without dead ends: 2934 [2021-10-13 22:33:17,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 234.5ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2021-10-13 22:33:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2463. [2021-10-13 22:33:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2462 states have (on average 2.7835093419983754) internal successors, (6853), 2462 states have internal predecessors, (6853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 6853 transitions. [2021-10-13 22:33:17,846 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 6853 transitions. Word has length 80 [2021-10-13 22:33:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:17,847 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 6853 transitions. [2021-10-13 22:33:17,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 6853 transitions. [2021-10-13 22:33:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:17,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:17,866 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:17,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:18,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 22:33:18,079 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:18,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1345956948, now seen corresponding path program 41 times [2021-10-13 22:33:18,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:18,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399083130] [2021-10-13 22:33:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:18,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:18,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:18,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399083130] [2021-10-13 22:33:18,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399083130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:18,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863241676] [2021-10-13 22:33:18,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:18,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:18,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:18,197 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:18,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 22:33:19,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:33:19,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:19,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:19,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:19,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863241676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:19,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:19,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:19,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486339558] [2021-10-13 22:33:19,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:19,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:19,399 INFO L87 Difference]: Start difference. First operand 2463 states and 6853 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:19,560 INFO L93 Difference]: Finished difference Result 3561 states and 9177 transitions. [2021-10-13 22:33:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:33:19,561 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:19,565 INFO L225 Difference]: With dead ends: 3561 [2021-10-13 22:33:19,565 INFO L226 Difference]: Without dead ends: 3291 [2021-10-13 22:33:19,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:33:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-10-13 22:33:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2478. [2021-10-13 22:33:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:19,591 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:19,591 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:19,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:19,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:19,593 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:19,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:19,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 22:33:19,794 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:19,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1162848956, now seen corresponding path program 42 times [2021-10-13 22:33:19,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:19,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656187282] [2021-10-13 22:33:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:19,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:19,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:19,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656187282] [2021-10-13 22:33:19,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656187282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:19,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235612404] [2021-10-13 22:33:19,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:19,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:19,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:19,913 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:19,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 22:33:21,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:33:21,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:21,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:21,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:21,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235612404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:21,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:21,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:21,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002421637] [2021-10-13 22:33:21,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:21,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:21,285 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:21,489 INFO L93 Difference]: Finished difference Result 3446 states and 8947 transitions. [2021-10-13 22:33:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:21,489 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:21,493 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:33:21,493 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:33:21,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 204.5ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:33:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2478. [2021-10-13 22:33:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:21,522 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:21,522 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:21,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:21,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:21,524 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:21,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-10-13 22:33:21,735 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1233030958, now seen corresponding path program 43 times [2021-10-13 22:33:21,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:21,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358284483] [2021-10-13 22:33:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:21,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:21,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:21,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358284483] [2021-10-13 22:33:21,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358284483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:21,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619747387] [2021-10-13 22:33:21,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:21,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:21,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:21,878 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:21,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 22:33:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:22,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:22,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:23,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619747387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:23,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:23,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:23,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285706154] [2021-10-13 22:33:23,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:23,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:23,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:23,087 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:23,259 INFO L93 Difference]: Finished difference Result 3421 states and 8897 transitions. [2021-10-13 22:33:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:33:23,259 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:23,263 INFO L225 Difference]: With dead ends: 3421 [2021-10-13 22:33:23,263 INFO L226 Difference]: Without dead ends: 3151 [2021-10-13 22:33:23,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-10-13 22:33:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2478. [2021-10-13 22:33:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:23,304 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:23,305 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:23,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:23,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:23,307 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:23,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-13 22:33:23,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:23,508 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash -359037502, now seen corresponding path program 44 times [2021-10-13 22:33:23,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:23,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012213869] [2021-10-13 22:33:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:23,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:23,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:23,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012213869] [2021-10-13 22:33:23,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012213869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:23,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301506501] [2021-10-13 22:33:23,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:23,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:23,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:23,629 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:23,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 22:33:24,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:24,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:24,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:24,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:24,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301506501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:24,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:24,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:24,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182976993] [2021-10-13 22:33:24,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:24,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:24,886 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:25,141 INFO L93 Difference]: Finished difference Result 3371 states and 8797 transitions. [2021-10-13 22:33:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:25,144 INFO L225 Difference]: With dead ends: 3371 [2021-10-13 22:33:25,144 INFO L226 Difference]: Without dead ends: 3101 [2021-10-13 22:33:25,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 231.0ms TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2021-10-13 22:33:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2478. [2021-10-13 22:33:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:25,168 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:25,168 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:25,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:25,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:25,170 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:25,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 22:33:25,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:25,382 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:25,383 INFO L82 PathProgramCache]: Analyzing trace with hash 136256208, now seen corresponding path program 45 times [2021-10-13 22:33:25,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:25,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793301333] [2021-10-13 22:33:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:25,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:25,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:25,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793301333] [2021-10-13 22:33:25,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793301333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:25,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728517651] [2021-10-13 22:33:25,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:25,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:25,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:25,488 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:25,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 22:33:26,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:33:26,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:26,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:33:26,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:26,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728517651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:26,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:26,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:26,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321350241] [2021-10-13 22:33:26,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:26,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:26,836 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:27,035 INFO L93 Difference]: Finished difference Result 3321 states and 8697 transitions. [2021-10-13 22:33:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:27,039 INFO L225 Difference]: With dead ends: 3321 [2021-10-13 22:33:27,039 INFO L226 Difference]: Without dead ends: 3051 [2021-10-13 22:33:27,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 190.0ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-10-13 22:33:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2478. [2021-10-13 22:33:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:27,065 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:27,065 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:27,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:27,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:27,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:27,067 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:27,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-13 22:33:27,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:27,283 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1886362560, now seen corresponding path program 46 times [2021-10-13 22:33:27,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:27,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380230473] [2021-10-13 22:33:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:27,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:27,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:27,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380230473] [2021-10-13 22:33:27,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380230473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:27,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453369881] [2021-10-13 22:33:27,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:27,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:27,389 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:27,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 22:33:28,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:28,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:28,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:28,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:28,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453369881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:28,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:28,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:28,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067064913] [2021-10-13 22:33:28,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:28,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:28,685 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:28,984 INFO L93 Difference]: Finished difference Result 3271 states and 8597 transitions. [2021-10-13 22:33:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:28,984 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:28,988 INFO L225 Difference]: With dead ends: 3271 [2021-10-13 22:33:28,988 INFO L226 Difference]: Without dead ends: 3001 [2021-10-13 22:33:28,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 280.9ms TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2021-10-13 22:33:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2478. [2021-10-13 22:33:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:29,012 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:29,012 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:29,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:29,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:29,015 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:29,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:29,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 22:33:29,219 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:29,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1498707378, now seen corresponding path program 47 times [2021-10-13 22:33:29,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:29,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053039740] [2021-10-13 22:33:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:29,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:29,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:29,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053039740] [2021-10-13 22:33:29,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053039740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927354807] [2021-10-13 22:33:29,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:29,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:29,356 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:29,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 22:33:30,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:33:30,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:30,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:30,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:30,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927354807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:30,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:30,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:30,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820868695] [2021-10-13 22:33:30,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:30,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:30,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:30,672 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:30,911 INFO L93 Difference]: Finished difference Result 3221 states and 8497 transitions. [2021-10-13 22:33:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:30,915 INFO L225 Difference]: With dead ends: 3221 [2021-10-13 22:33:30,915 INFO L226 Difference]: Without dead ends: 2951 [2021-10-13 22:33:30,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-10-13 22:33:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2478. [2021-10-13 22:33:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7787646346386756) internal successors, (6883), 2477 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6883 transitions. [2021-10-13 22:33:30,969 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6883 transitions. Word has length 80 [2021-10-13 22:33:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:30,969 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 6883 transitions. [2021-10-13 22:33:30,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6883 transitions. [2021-10-13 22:33:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:30,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:30,982 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:31,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:31,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 22:33:31,183 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1366591682, now seen corresponding path program 48 times [2021-10-13 22:33:31,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:31,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841520751] [2021-10-13 22:33:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:31,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:31,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:31,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841520751] [2021-10-13 22:33:31,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841520751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:31,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338394670] [2021-10-13 22:33:31,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:31,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:31,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:31,281 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:31,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 22:33:32,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:33:32,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:32,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:33:32,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:32,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338394670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:32,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:32,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501869635] [2021-10-13 22:33:32,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:32,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:32,576 INFO L87 Difference]: Start difference. First operand 2478 states and 6883 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:32,896 INFO L93 Difference]: Finished difference Result 3679 states and 9763 transitions. [2021-10-13 22:33:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:33:32,896 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:32,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:32,900 INFO L225 Difference]: With dead ends: 3679 [2021-10-13 22:33:32,900 INFO L226 Difference]: Without dead ends: 3056 [2021-10-13 22:33:32,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 277.3ms TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:33:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2021-10-13 22:33:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2388. [2021-10-13 22:33:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2387 states have (on average 2.785085881860075) internal successors, (6648), 2387 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 6648 transitions. [2021-10-13 22:33:32,933 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 6648 transitions. Word has length 80 [2021-10-13 22:33:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:32,933 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 6648 transitions. [2021-10-13 22:33:32,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 6648 transitions. [2021-10-13 22:33:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:32,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:32,935 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:33,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:33,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 22:33:33,146 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1822974132, now seen corresponding path program 49 times [2021-10-13 22:33:33,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:33,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337667685] [2021-10-13 22:33:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:33,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:33,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:33,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337667685] [2021-10-13 22:33:33,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337667685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:33,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612917842] [2021-10-13 22:33:33,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:33,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:33,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:33,252 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:33,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 22:33:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:34,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:34,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:34,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612917842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:34,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:34,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:34,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377186981] [2021-10-13 22:33:34,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:34,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:34,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:34,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:34,559 INFO L87 Difference]: Start difference. First operand 2388 states and 6648 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:34,835 INFO L93 Difference]: Finished difference Result 3908 states and 10481 transitions. [2021-10-13 22:33:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:34,835 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:34,840 INFO L225 Difference]: With dead ends: 3908 [2021-10-13 22:33:34,840 INFO L226 Difference]: Without dead ends: 3638 [2021-10-13 22:33:34,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 223.3ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:34,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2021-10-13 22:33:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 2568. [2021-10-13 22:33:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2567 states have (on average 2.8075574600701207) internal successors, (7207), 2567 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 7207 transitions. [2021-10-13 22:33:34,873 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 7207 transitions. Word has length 80 [2021-10-13 22:33:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:34,873 INFO L470 AbstractCegarLoop]: Abstraction has 2568 states and 7207 transitions. [2021-10-13 22:33:34,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 7207 transitions. [2021-10-13 22:33:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:34,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:34,875 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:34,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-13 22:33:35,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 22:33:35,091 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1757731842, now seen corresponding path program 50 times [2021-10-13 22:33:35,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:35,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167614116] [2021-10-13 22:33:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:35,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:35,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:35,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167614116] [2021-10-13 22:33:35,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167614116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:35,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788518316] [2021-10-13 22:33:35,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:35,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:35,179 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:35,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 22:33:36,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:36,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:36,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:36,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:36,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788518316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:36,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:36,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:36,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476777991] [2021-10-13 22:33:36,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:36,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:36,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:36,575 INFO L87 Difference]: Start difference. First operand 2568 states and 7207 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:36,946 INFO L93 Difference]: Finished difference Result 3851 states and 10341 transitions. [2021-10-13 22:33:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:33:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 22:33:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:36,951 INFO L225 Difference]: With dead ends: 3851 [2021-10-13 22:33:36,951 INFO L226 Difference]: Without dead ends: 3276 [2021-10-13 22:33:36,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 318.4ms TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-10-13 22:33:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2603. [2021-10-13 22:33:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:36,977 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 80 [2021-10-13 22:33:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:36,978 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:36,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:36,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:36,980 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:36,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:37,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 22:33:37,180 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1972919915, now seen corresponding path program 51 times [2021-10-13 22:33:37,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:37,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597586300] [2021-10-13 22:33:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:37,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:37,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:37,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597586300] [2021-10-13 22:33:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597586300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:37,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786049371] [2021-10-13 22:33:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:37,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:37,316 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:37,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 22:33:38,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:38,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:38,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:38,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786049371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:38,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:38,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:38,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100718823] [2021-10-13 22:33:38,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:38,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:38,766 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:38,978 INFO L93 Difference]: Finished difference Result 3446 states and 9097 transitions. [2021-10-13 22:33:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:38,982 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:33:38,982 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:33:38,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 211.9ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:33:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2603. [2021-10-13 22:33:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:39,014 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:39,014 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:39,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:39,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:39,017 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:39,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-13 22:33:39,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 22:33:39,224 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash -535885989, now seen corresponding path program 52 times [2021-10-13 22:33:39,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:39,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229026369] [2021-10-13 22:33:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:39,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:39,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:39,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229026369] [2021-10-13 22:33:39,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229026369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:39,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657352007] [2021-10-13 22:33:39,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:39,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:39,355 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:39,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 22:33:40,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:40,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:40,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:40,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:40,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657352007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:40,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:40,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:40,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784563927] [2021-10-13 22:33:40,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:40,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:40,846 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:41,074 INFO L93 Difference]: Finished difference Result 3641 states and 9487 transitions. [2021-10-13 22:33:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:41,078 INFO L225 Difference]: With dead ends: 3641 [2021-10-13 22:33:41,078 INFO L226 Difference]: Without dead ends: 3371 [2021-10-13 22:33:41,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 232.9ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2021-10-13 22:33:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2603. [2021-10-13 22:33:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:41,105 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:41,105 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:41,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:41,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:41,107 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:41,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:41,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:41,308 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash -606067991, now seen corresponding path program 53 times [2021-10-13 22:33:41,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:41,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183131955] [2021-10-13 22:33:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:41,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:41,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:41,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183131955] [2021-10-13 22:33:41,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183131955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:41,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762568898] [2021-10-13 22:33:41,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:41,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:41,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:41,431 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:41,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 22:33:42,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:42,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:42,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:42,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:42,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762568898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:42,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:42,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:42,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138994724] [2021-10-13 22:33:42,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:42,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:42,924 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:43,147 INFO L93 Difference]: Finished difference Result 3596 states and 9397 transitions. [2021-10-13 22:33:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:43,151 INFO L225 Difference]: With dead ends: 3596 [2021-10-13 22:33:43,152 INFO L226 Difference]: Without dead ends: 3326 [2021-10-13 22:33:43,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 212.6ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2021-10-13 22:33:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2603. [2021-10-13 22:33:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:43,180 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:43,180 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:43,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:43,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:43,182 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:43,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-13 22:33:43,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:43,383 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:43,383 INFO L82 PathProgramCache]: Analyzing trace with hash 267925465, now seen corresponding path program 54 times [2021-10-13 22:33:43,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:43,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546039377] [2021-10-13 22:33:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:43,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:43,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:43,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546039377] [2021-10-13 22:33:43,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546039377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:43,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666876596] [2021-10-13 22:33:43,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:43,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:43,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:43,504 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:43,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 22:33:44,788 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:44,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:44,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:44,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:45,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666876596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:45,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:45,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:45,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525844157] [2021-10-13 22:33:45,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:45,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:45,038 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:45,327 INFO L93 Difference]: Finished difference Result 3546 states and 9297 transitions. [2021-10-13 22:33:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:45,327 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:45,332 INFO L225 Difference]: With dead ends: 3546 [2021-10-13 22:33:45,332 INFO L226 Difference]: Without dead ends: 3276 [2021-10-13 22:33:45,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 269.6ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:45,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-10-13 22:33:45,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2603. [2021-10-13 22:33:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:45,382 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:45,382 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:45,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:45,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:45,385 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:45,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-13 22:33:45,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,585 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:45,586 INFO L82 PathProgramCache]: Analyzing trace with hash 763219175, now seen corresponding path program 55 times [2021-10-13 22:33:45,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:45,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089601360] [2021-10-13 22:33:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:45,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:45,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:45,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089601360] [2021-10-13 22:33:45,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089601360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:45,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982009115] [2021-10-13 22:33:45,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:45,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:45,691 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:45,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 22:33:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:46,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:46,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:47,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982009115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:47,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:47,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:47,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156322991] [2021-10-13 22:33:47,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:47,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:47,211 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:47,457 INFO L93 Difference]: Finished difference Result 3496 states and 9197 transitions. [2021-10-13 22:33:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:47,461 INFO L225 Difference]: With dead ends: 3496 [2021-10-13 22:33:47,461 INFO L226 Difference]: Without dead ends: 3226 [2021-10-13 22:33:47,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 217.0ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-10-13 22:33:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2603. [2021-10-13 22:33:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:47,487 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:47,487 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:47,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:47,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:47,489 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:47,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-13 22:33:47,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-13 22:33:47,690 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:47,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1781641769, now seen corresponding path program 56 times [2021-10-13 22:33:47,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:47,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475630297] [2021-10-13 22:33:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:47,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:47,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:47,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475630297] [2021-10-13 22:33:47,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475630297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:47,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212840580] [2021-10-13 22:33:47,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:47,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:47,795 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:47,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 22:33:49,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:49,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:49,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:49,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:49,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212840580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:49,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:49,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967334073] [2021-10-13 22:33:49,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:49,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:49,364 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:49,680 INFO L93 Difference]: Finished difference Result 3446 states and 9097 transitions. [2021-10-13 22:33:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:33:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:49,684 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:33:49,684 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:33:49,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 292.1ms TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:33:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2603. [2021-10-13 22:33:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:49,710 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:49,710 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:49,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:49,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:49,713 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:49,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-13 22:33:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-13 22:33:49,913 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:49,914 INFO L82 PathProgramCache]: Analyzing trace with hash -871744411, now seen corresponding path program 57 times [2021-10-13 22:33:49,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:49,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925872594] [2021-10-13 22:33:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:49,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:50,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:50,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925872594] [2021-10-13 22:33:50,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925872594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:50,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844251675] [2021-10-13 22:33:50,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:50,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:50,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:50,140 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:50,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 22:33:51,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:51,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:51,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:33:51,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:51,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844251675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:51,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:51,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:51,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932191278] [2021-10-13 22:33:51,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:51,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:51,717 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:51,981 INFO L93 Difference]: Finished difference Result 3396 states and 8997 transitions. [2021-10-13 22:33:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:33:51,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:51,985 INFO L225 Difference]: With dead ends: 3396 [2021-10-13 22:33:51,985 INFO L226 Difference]: Without dead ends: 3126 [2021-10-13 22:33:51,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 357.6ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-13 22:33:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2603. [2021-10-13 22:33:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.799000768639508) internal successors, (7283), 2602 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:52,014 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:52,014 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:52,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:52,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:52,017 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:52,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-13 22:33:52,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:52,217 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -739628715, now seen corresponding path program 58 times [2021-10-13 22:33:52,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:52,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992725856] [2021-10-13 22:33:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:52,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:52,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:52,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992725856] [2021-10-13 22:33:52,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992725856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:52,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981250475] [2021-10-13 22:33:52,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:52,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:52,324 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:52,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 22:33:53,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:53,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:53,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:53,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:53,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981250475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:53,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:53,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:53,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3780722] [2021-10-13 22:33:53,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:53,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:53,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:53,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:53,969 INFO L87 Difference]: Start difference. First operand 2603 states and 7283 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:54,304 INFO L93 Difference]: Finished difference Result 3406 states and 9047 transitions. [2021-10-13 22:33:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:33:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:54,308 INFO L225 Difference]: With dead ends: 3406 [2021-10-13 22:33:54,308 INFO L226 Difference]: Without dead ends: 3136 [2021-10-13 22:33:54,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 309.1ms TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2021-10-13 22:33:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2603. [2021-10-13 22:33:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.800922367409685) internal successors, (7288), 2602 states have internal predecessors, (7288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7288 transitions. [2021-10-13 22:33:54,333 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7288 transitions. Word has length 85 [2021-10-13 22:33:54,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:54,334 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7288 transitions. [2021-10-13 22:33:54,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:54,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7288 transitions. [2021-10-13 22:33:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:54,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:54,336 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:54,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:54,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:54,536 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1196011165, now seen corresponding path program 59 times [2021-10-13 22:33:54,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:54,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033013816] [2021-10-13 22:33:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:54,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:54,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:54,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033013816] [2021-10-13 22:33:54,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033013816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:54,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217710525] [2021-10-13 22:33:54,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:54,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:54,632 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:54,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 22:33:56,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:56,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:56,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:56,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:56,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217710525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:56,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:56,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:56,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884905127] [2021-10-13 22:33:56,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:56,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:56,222 INFO L87 Difference]: Start difference. First operand 2603 states and 7288 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:56,505 INFO L93 Difference]: Finished difference Result 4148 states and 11171 transitions. [2021-10-13 22:33:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:33:56,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:56,510 INFO L225 Difference]: With dead ends: 4148 [2021-10-13 22:33:56,510 INFO L226 Difference]: Without dead ends: 3878 [2021-10-13 22:33:56,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 246.9ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-10-13 22:33:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2783. [2021-10-13 22:33:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2782 states have (on average 2.8206326383896476) internal successors, (7847), 2782 states have internal predecessors, (7847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 7847 transitions. [2021-10-13 22:33:56,541 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 7847 transitions. Word has length 85 [2021-10-13 22:33:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:56,541 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 7847 transitions. [2021-10-13 22:33:56,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 7847 transitions. [2021-10-13 22:33:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:56,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:56,543 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:56,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:56,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-13 22:33:56,744 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:56,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:56,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1130768875, now seen corresponding path program 60 times [2021-10-13 22:33:56,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:56,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370501448] [2021-10-13 22:33:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:56,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:56,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:56,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370501448] [2021-10-13 22:33:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370501448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:56,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892488049] [2021-10-13 22:33:56,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:56,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:56,857 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:56,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 22:33:58,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:58,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:58,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:33:58,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:58,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892488049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:58,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:58,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:58,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767301710] [2021-10-13 22:33:58,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:58,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:58,519 INFO L87 Difference]: Start difference. First operand 2783 states and 7847 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:58,919 INFO L93 Difference]: Finished difference Result 4016 states and 10836 transitions. [2021-10-13 22:33:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:33:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 22:33:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:58,924 INFO L225 Difference]: With dead ends: 4016 [2021-10-13 22:33:58,924 INFO L226 Difference]: Without dead ends: 3441 [2021-10-13 22:33:58,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 366.3ms TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:33:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-10-13 22:33:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 1924. [2021-10-13 22:33:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.733229329173167) internal successors, (5256), 1923 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5256 transitions. [2021-10-13 22:33:58,946 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5256 transitions. Word has length 85 [2021-10-13 22:33:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:58,946 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 5256 transitions. [2021-10-13 22:33:58,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5256 transitions. [2021-10-13 22:33:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:33:58,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:58,956 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:58,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:59,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 22:33:59,167 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:59,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2127813953, now seen corresponding path program 61 times [2021-10-13 22:33:59,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:59,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552686606] [2021-10-13 22:33:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:59,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:59,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:59,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552686606] [2021-10-13 22:33:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552686606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:59,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63520975] [2021-10-13 22:33:59,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:59,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:59,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:59,303 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:33:59,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 22:34:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:00,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:00,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:01,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63520975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:01,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2021-10-13 22:34:01,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148730560] [2021-10-13 22:34:01,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:34:01,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:34:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:34:01,129 INFO L87 Difference]: Start difference. First operand 1924 states and 5256 transitions. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:01,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:01,381 INFO L93 Difference]: Finished difference Result 2864 states and 7456 transitions. [2021-10-13 22:34:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:01,381 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:01,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:01,384 INFO L225 Difference]: With dead ends: 2864 [2021-10-13 22:34:01,384 INFO L226 Difference]: Without dead ends: 2530 [2021-10-13 22:34:01,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 250.0ms TimeCoverageRelationStatistics Valid=386, Invalid=1096, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-10-13 22:34:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2009. [2021-10-13 22:34:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 2.702191235059761) internal successors, (5426), 2008 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 5426 transitions. [2021-10-13 22:34:01,403 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 5426 transitions. Word has length 90 [2021-10-13 22:34:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:01,403 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 5426 transitions. [2021-10-13 22:34:01,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 5426 transitions. [2021-10-13 22:34:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:01,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:01,405 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:01,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-13 22:34:01,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:01,606 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash -946910843, now seen corresponding path program 62 times [2021-10-13 22:34:01,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:01,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460929425] [2021-10-13 22:34:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:01,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:01,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:01,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460929425] [2021-10-13 22:34:01,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460929425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668534865] [2021-10-13 22:34:01,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:01,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:01,738 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:01,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 22:34:03,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:03,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:03,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:03,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:03,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668534865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:03,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:03,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:03,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156586347] [2021-10-13 22:34:03,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:03,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:03,531 INFO L87 Difference]: Start difference. First operand 2009 states and 5426 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:03,712 INFO L93 Difference]: Finished difference Result 3386 states and 8437 transitions. [2021-10-13 22:34:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:34:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:03,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:03,716 INFO L225 Difference]: With dead ends: 3386 [2021-10-13 22:34:03,716 INFO L226 Difference]: Without dead ends: 3116 [2021-10-13 22:34:03,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 192.1ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:34:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-10-13 22:34:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2153. [2021-10-13 22:34:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.715148698884758) internal successors, (5843), 2152 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5843 transitions. [2021-10-13 22:34:03,739 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5843 transitions. Word has length 90 [2021-10-13 22:34:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:03,739 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 5843 transitions. [2021-10-13 22:34:03,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5843 transitions. [2021-10-13 22:34:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:03,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:03,741 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:03,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:03,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-10-13 22:34:03,942 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:03,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1036286347, now seen corresponding path program 63 times [2021-10-13 22:34:03,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:03,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764168271] [2021-10-13 22:34:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:03,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:04,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:04,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764168271] [2021-10-13 22:34:04,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764168271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:04,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778069084] [2021-10-13 22:34:04,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:04,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:04,079 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:04,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 22:34:05,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:34:05,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:05,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:05,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:05,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778069084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:05,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:05,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-13 22:34:05,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970426318] [2021-10-13 22:34:05,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:05,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:05,938 INFO L87 Difference]: Start difference. First operand 2153 states and 5843 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:06,189 INFO L93 Difference]: Finished difference Result 3346 states and 8432 transitions. [2021-10-13 22:34:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:06,193 INFO L225 Difference]: With dead ends: 3346 [2021-10-13 22:34:06,194 INFO L226 Difference]: Without dead ends: 3076 [2021-10-13 22:34:06,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 269.8ms TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:34:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-10-13 22:34:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2228. [2021-10-13 22:34:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 2.724741805118994) internal successors, (6068), 2227 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6068 transitions. [2021-10-13 22:34:06,221 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6068 transitions. Word has length 90 [2021-10-13 22:34:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:06,222 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 6068 transitions. [2021-10-13 22:34:06,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6068 transitions. [2021-10-13 22:34:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:06,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:06,224 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:06,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-13 22:34:06,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:06,431 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1568536445, now seen corresponding path program 64 times [2021-10-13 22:34:06,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:06,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237596390] [2021-10-13 22:34:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:06,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:06,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:06,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237596390] [2021-10-13 22:34:06,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237596390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:06,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283712199] [2021-10-13 22:34:06,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:06,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:06,578 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:06,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 22:34:08,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:08,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:08,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:08,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:08,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283712199] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:08,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:08,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:08,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753658983] [2021-10-13 22:34:08,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:08,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:08,423 INFO L87 Difference]: Start difference. First operand 2228 states and 6068 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:08,628 INFO L93 Difference]: Finished difference Result 3396 states and 8607 transitions. [2021-10-13 22:34:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:34:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:08,632 INFO L225 Difference]: With dead ends: 3396 [2021-10-13 22:34:08,633 INFO L226 Difference]: Without dead ends: 3126 [2021-10-13 22:34:08,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 229.9ms TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:34:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-13 22:34:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2303. [2021-10-13 22:34:08,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 2.7337098175499563) internal successors, (6293), 2302 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 6293 transitions. [2021-10-13 22:34:08,687 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 6293 transitions. Word has length 90 [2021-10-13 22:34:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:08,687 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 6293 transitions. [2021-10-13 22:34:08,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 6293 transitions. [2021-10-13 22:34:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:08,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:08,689 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:08,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:08,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:08,890 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:08,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:08,890 INFO L82 PathProgramCache]: Analyzing trace with hash 217624947, now seen corresponding path program 65 times [2021-10-13 22:34:08,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:08,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359231798] [2021-10-13 22:34:08,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:08,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:09,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359231798] [2021-10-13 22:34:09,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359231798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164458468] [2021-10-13 22:34:09,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:09,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:09,031 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:09,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 22:34:10,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:34:10,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:10,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:10,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:10,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164458468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:10,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:10,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-13 22:34:10,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323071778] [2021-10-13 22:34:10,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:10,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:10,939 INFO L87 Difference]: Start difference. First operand 2303 states and 6293 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:11,213 INFO L93 Difference]: Finished difference Result 3421 states and 8732 transitions. [2021-10-13 22:34:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:11,219 INFO L225 Difference]: With dead ends: 3421 [2021-10-13 22:34:11,219 INFO L226 Difference]: Without dead ends: 3151 [2021-10-13 22:34:11,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 284.0ms TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-10-13 22:34:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2378. [2021-10-13 22:34:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.7421119057635677) internal successors, (6518), 2377 states have internal predecessors, (6518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6518 transitions. [2021-10-13 22:34:11,244 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6518 transitions. Word has length 90 [2021-10-13 22:34:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:11,245 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 6518 transitions. [2021-10-13 22:34:11,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6518 transitions. [2021-10-13 22:34:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:11,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:11,249 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:11,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:11,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-13 22:34:11,463 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:11,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash 147442945, now seen corresponding path program 66 times [2021-10-13 22:34:11,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:11,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065608912] [2021-10-13 22:34:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:11,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:11,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:11,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065608912] [2021-10-13 22:34:11,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065608912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:11,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868049394] [2021-10-13 22:34:11,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:11,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:11,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:11,578 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:11,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 22:34:13,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:34:13,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:13,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:13,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868049394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:13,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:13,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:13,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882716417] [2021-10-13 22:34:13,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:13,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:13,505 INFO L87 Difference]: Start difference. First operand 2378 states and 6518 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:13,734 INFO L93 Difference]: Finished difference Result 3446 states and 8857 transitions. [2021-10-13 22:34:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:34:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:13,738 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:34:13,738 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:34:13,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 220.8ms TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:34:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:34:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2453. [2021-10-13 22:34:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 2.75) internal successors, (6743), 2452 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 6743 transitions. [2021-10-13 22:34:13,764 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 6743 transitions. Word has length 90 [2021-10-13 22:34:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:13,764 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 6743 transitions. [2021-10-13 22:34:13,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 6743 transitions. [2021-10-13 22:34:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:13,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:13,766 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:13,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-13 22:34:13,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:13,973 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:13,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1021436401, now seen corresponding path program 67 times [2021-10-13 22:34:13,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:13,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910746616] [2021-10-13 22:34:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:13,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:14,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:14,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910746616] [2021-10-13 22:34:14,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910746616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:14,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477867277] [2021-10-13 22:34:14,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:14,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:14,094 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:14,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 22:34:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:15,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:16,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477867277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:16,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:16,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-13 22:34:16,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099161695] [2021-10-13 22:34:16,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:16,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:16,024 INFO L87 Difference]: Start difference. First operand 2453 states and 6743 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:16,353 INFO L93 Difference]: Finished difference Result 3471 states and 8982 transitions. [2021-10-13 22:34:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:16,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:16,357 INFO L225 Difference]: With dead ends: 3471 [2021-10-13 22:34:16,357 INFO L226 Difference]: Without dead ends: 3201 [2021-10-13 22:34:16,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 295.1ms TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2021-10-13 22:34:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2528. [2021-10-13 22:34:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2527 states have (on average 2.7574198654531066) internal successors, (6968), 2527 states have internal predecessors, (6968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 6968 transitions. [2021-10-13 22:34:16,383 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 6968 transitions. Word has length 90 [2021-10-13 22:34:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:16,383 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 6968 transitions. [2021-10-13 22:34:16,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 6968 transitions. [2021-10-13 22:34:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:16,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:16,385 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:16,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-13 22:34:16,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:16,586 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:16,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1516730111, now seen corresponding path program 68 times [2021-10-13 22:34:16,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:16,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25924772] [2021-10-13 22:34:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:16,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:16,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:16,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25924772] [2021-10-13 22:34:16,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25924772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:16,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136199088] [2021-10-13 22:34:16,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:16,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:16,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:16,696 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:16,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 22:34:18,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:18,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:18,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:18,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:18,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136199088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:18,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:18,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:18,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579106477] [2021-10-13 22:34:18,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:18,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:18,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:18,653 INFO L87 Difference]: Start difference. First operand 2528 states and 6968 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:18,909 INFO L93 Difference]: Finished difference Result 3496 states and 9107 transitions. [2021-10-13 22:34:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:34:18,909 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:18,913 INFO L225 Difference]: With dead ends: 3496 [2021-10-13 22:34:18,913 INFO L226 Difference]: Without dead ends: 3226 [2021-10-13 22:34:18,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 238.8ms TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-10-13 22:34:18,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2603. [2021-10-13 22:34:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.764411990776326) internal successors, (7193), 2602 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7193 transitions. [2021-10-13 22:34:18,941 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7193 transitions. Word has length 90 [2021-10-13 22:34:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:18,941 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7193 transitions. [2021-10-13 22:34:18,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7193 transitions. [2021-10-13 22:34:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:18,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:18,944 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:18,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-13 22:34:19,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:19,144 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1028130833, now seen corresponding path program 69 times [2021-10-13 22:34:19,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:19,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141082124] [2021-10-13 22:34:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:19,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:19,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:19,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141082124] [2021-10-13 22:34:19,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141082124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:19,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345894625] [2021-10-13 22:34:19,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:19,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:19,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:19,281 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:19,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 22:34:21,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:34:21,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:21,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:34:21,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:21,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345894625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:21,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:21,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-13 22:34:21,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442624008] [2021-10-13 22:34:21,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:21,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:21,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:21,261 INFO L87 Difference]: Start difference. First operand 2603 states and 7193 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:21,587 INFO L93 Difference]: Finished difference Result 3521 states and 9232 transitions. [2021-10-13 22:34:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:21,587 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:21,591 INFO L225 Difference]: With dead ends: 3521 [2021-10-13 22:34:21,591 INFO L226 Difference]: Without dead ends: 3251 [2021-10-13 22:34:21,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 301.2ms TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2021-10-13 22:34:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2678. [2021-10-13 22:34:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.771012327231976) internal successors, (7418), 2677 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7418 transitions. [2021-10-13 22:34:21,620 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7418 transitions. Word has length 90 [2021-10-13 22:34:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:21,620 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7418 transitions. [2021-10-13 22:34:21,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7418 transitions. [2021-10-13 22:34:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:21,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:21,622 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:21,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:21,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-13 22:34:21,823 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:21,823 INFO L82 PathProgramCache]: Analyzing trace with hash -118233475, now seen corresponding path program 70 times [2021-10-13 22:34:21,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:21,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635751458] [2021-10-13 22:34:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:21,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:21,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:21,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635751458] [2021-10-13 22:34:21,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635751458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:21,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373516022] [2021-10-13 22:34:21,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:21,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:21,930 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:21,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 22:34:23,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:23,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:23,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:23,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373516022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:23,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:23,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:23,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305882973] [2021-10-13 22:34:23,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:23,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:23,970 INFO L87 Difference]: Start difference. First operand 2678 states and 7418 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:24,259 INFO L93 Difference]: Finished difference Result 3591 states and 9477 transitions. [2021-10-13 22:34:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:34:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:24,268 INFO L225 Difference]: With dead ends: 3591 [2021-10-13 22:34:24,268 INFO L226 Difference]: Without dead ends: 3321 [2021-10-13 22:34:24,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 259.6ms TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-10-13 22:34:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2753. [2021-10-13 22:34:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.782703488372093) internal successors, (7658), 2752 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7658 transitions. [2021-10-13 22:34:24,299 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7658 transitions. Word has length 90 [2021-10-13 22:34:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:24,299 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 7658 transitions. [2021-10-13 22:34:24,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7658 transitions. [2021-10-13 22:34:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:24,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:24,301 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:24,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:24,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:24,502 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:24,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:24,502 INFO L82 PathProgramCache]: Analyzing trace with hash 13882221, now seen corresponding path program 71 times [2021-10-13 22:34:24,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:24,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471579381] [2021-10-13 22:34:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:24,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:24,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:24,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471579381] [2021-10-13 22:34:24,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471579381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:24,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140528974] [2021-10-13 22:34:24,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:24,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:24,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:24,678 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:24,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 22:34:26,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:34:26,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:26,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:26,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:26,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140528974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:26,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:26,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-13 22:34:26,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513685794] [2021-10-13 22:34:26,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:26,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:26,729 INFO L87 Difference]: Start difference. First operand 2753 states and 7658 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:27,195 INFO L93 Difference]: Finished difference Result 4169 states and 11103 transitions. [2021-10-13 22:34:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:34:27,195 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:27,199 INFO L225 Difference]: With dead ends: 4169 [2021-10-13 22:34:27,199 INFO L226 Difference]: Without dead ends: 3546 [2021-10-13 22:34:27,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 454.0ms TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:34:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-10-13 22:34:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2828. [2021-10-13 22:34:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.790237000353732) internal successors, (7888), 2827 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7888 transitions. [2021-10-13 22:34:27,227 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7888 transitions. Word has length 90 [2021-10-13 22:34:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:27,227 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7888 transitions. [2021-10-13 22:34:27,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7888 transitions. [2021-10-13 22:34:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:27,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:27,229 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:27,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:27,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:27,430 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:27,430 INFO L82 PathProgramCache]: Analyzing trace with hash -442500229, now seen corresponding path program 72 times [2021-10-13 22:34:27,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:27,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705363281] [2021-10-13 22:34:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:27,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:27,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:27,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705363281] [2021-10-13 22:34:27,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705363281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:27,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713593101] [2021-10-13 22:34:27,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:27,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:27,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:27,532 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:27,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 22:34:29,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:34:29,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:29,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:29,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713593101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:29,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:29,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:29,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713031002] [2021-10-13 22:34:29,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:29,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:29,615 INFO L87 Difference]: Start difference. First operand 2828 states and 7888 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:29,960 INFO L93 Difference]: Finished difference Result 4398 states and 11821 transitions. [2021-10-13 22:34:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:34:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:29,967 INFO L225 Difference]: With dead ends: 4398 [2021-10-13 22:34:29,967 INFO L226 Difference]: Without dead ends: 4128 [2021-10-13 22:34:29,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 306.0ms TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:34:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2021-10-13 22:34:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3008. [2021-10-13 22:34:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 2.809112071832391) internal successors, (8447), 3007 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 8447 transitions. [2021-10-13 22:34:29,998 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 8447 transitions. Word has length 90 [2021-10-13 22:34:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:29,998 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 8447 transitions. [2021-10-13 22:34:29,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 8447 transitions. [2021-10-13 22:34:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:30,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:30,001 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:30,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:30,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable80 [2021-10-13 22:34:30,201 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:30,202 INFO L82 PathProgramCache]: Analyzing trace with hash -377257939, now seen corresponding path program 73 times [2021-10-13 22:34:30,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:30,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048633152] [2021-10-13 22:34:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:30,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:30,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:30,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048633152] [2021-10-13 22:34:30,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048633152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:30,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457044872] [2021-10-13 22:34:30,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:30,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:30,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:30,308 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:30,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-13 22:34:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:32,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:32,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:32,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457044872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:32,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:32,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:32,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866814699] [2021-10-13 22:34:32,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:32,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:32,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:32,361 INFO L87 Difference]: Start difference. First operand 3008 states and 8447 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:32,806 INFO L93 Difference]: Finished difference Result 3885 states and 10521 transitions. [2021-10-13 22:34:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:34:32,806 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 22:34:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:32,810 INFO L225 Difference]: With dead ends: 3885 [2021-10-13 22:34:32,810 INFO L226 Difference]: Without dead ends: 3306 [2021-10-13 22:34:32,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 406.2ms TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:34:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2021-10-13 22:34:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 2113. [2021-10-13 22:34:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7357954545454546) internal successors, (5778), 2112 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5778 transitions. [2021-10-13 22:34:32,832 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5778 transitions. Word has length 90 [2021-10-13 22:34:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:32,832 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 5778 transitions. [2021-10-13 22:34:32,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5778 transitions. [2021-10-13 22:34:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:32,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:32,834 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:32,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:33,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:33,034 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:33,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1270641956, now seen corresponding path program 74 times [2021-10-13 22:34:33,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:33,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518798608] [2021-10-13 22:34:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:33,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:33,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:33,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518798608] [2021-10-13 22:34:33,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518798608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:33,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674943458] [2021-10-13 22:34:33,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:33,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:33,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:33,173 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:33,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-13 22:34:35,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:35,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:35,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:35,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:35,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674943458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:35,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:35,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:35,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841676138] [2021-10-13 22:34:35,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:35,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:35,383 INFO L87 Difference]: Start difference. First operand 2113 states and 5778 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:35,595 INFO L93 Difference]: Finished difference Result 3131 states and 8017 transitions. [2021-10-13 22:34:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:35,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:35,598 INFO L225 Difference]: With dead ends: 3131 [2021-10-13 22:34:35,598 INFO L226 Difference]: Without dead ends: 2861 [2021-10-13 22:34:35,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 217.9ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:34:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-10-13 22:34:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2188. [2021-10-13 22:34:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.7448559670781894) internal successors, (6003), 2187 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6003 transitions. [2021-10-13 22:34:35,622 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6003 transitions. Word has length 95 [2021-10-13 22:34:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:35,622 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6003 transitions. [2021-10-13 22:34:35,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6003 transitions. [2021-10-13 22:34:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:35,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:35,624 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:35,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-10-13 22:34:35,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:35,825 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:35,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1360017460, now seen corresponding path program 75 times [2021-10-13 22:34:35,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:35,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089119273] [2021-10-13 22:34:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:35,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:35,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:35,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089119273] [2021-10-13 22:34:35,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089119273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:35,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211358171] [2021-10-13 22:34:35,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:35,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:35,973 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:35,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-13 22:34:37,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:34:37,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:37,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:37,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:38,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211358171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:38,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:38,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:38,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212853263] [2021-10-13 22:34:38,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:38,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:38,243 INFO L87 Difference]: Start difference. First operand 2188 states and 6003 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:38,497 INFO L93 Difference]: Finished difference Result 3451 states and 8732 transitions. [2021-10-13 22:34:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:38,497 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:38,500 INFO L225 Difference]: With dead ends: 3451 [2021-10-13 22:34:38,501 INFO L226 Difference]: Without dead ends: 3181 [2021-10-13 22:34:38,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 262.8ms TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-10-13 22:34:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2263. [2021-10-13 22:34:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.753315649867374) internal successors, (6228), 2262 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6228 transitions. [2021-10-13 22:34:38,525 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6228 transitions. Word has length 95 [2021-10-13 22:34:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:38,525 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6228 transitions. [2021-10-13 22:34:38,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6228 transitions. [2021-10-13 22:34:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:38,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:38,527 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:38,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-13 22:34:38,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:38,729 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:38,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1892267558, now seen corresponding path program 76 times [2021-10-13 22:34:38,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:38,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054387484] [2021-10-13 22:34:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:38,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:38,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:38,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054387484] [2021-10-13 22:34:38,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054387484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:38,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396574006] [2021-10-13 22:34:38,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:38,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:38,908 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:38,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-13 22:34:40,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:40,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:40,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:40,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:41,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396574006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:41,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:41,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:41,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023668835] [2021-10-13 22:34:41,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:41,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:41,185 INFO L87 Difference]: Start difference. First operand 2263 states and 6228 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:41,423 INFO L93 Difference]: Finished difference Result 3481 states and 8867 transitions. [2021-10-13 22:34:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:34:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:41,427 INFO L225 Difference]: With dead ends: 3481 [2021-10-13 22:34:41,427 INFO L226 Difference]: Without dead ends: 3211 [2021-10-13 22:34:41,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 253.4ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-10-13 22:34:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2338. [2021-10-13 22:34:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.761232349165597) internal successors, (6453), 2337 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6453 transitions. [2021-10-13 22:34:41,453 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6453 transitions. Word has length 95 [2021-10-13 22:34:41,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:41,453 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 6453 transitions. [2021-10-13 22:34:41,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6453 transitions. [2021-10-13 22:34:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:41,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:41,455 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:41,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:41,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-10-13 22:34:41,656 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:41,656 INFO L82 PathProgramCache]: Analyzing trace with hash -106106166, now seen corresponding path program 77 times [2021-10-13 22:34:41,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:41,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505191823] [2021-10-13 22:34:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:41,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:41,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:41,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505191823] [2021-10-13 22:34:41,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505191823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:41,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992368281] [2021-10-13 22:34:41,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:41,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:41,794 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:41,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-13 22:34:43,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:34:43,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:43,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:43,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:44,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992368281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:44,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:44,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:44,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595729210] [2021-10-13 22:34:44,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:44,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:44,070 INFO L87 Difference]: Start difference. First operand 2338 states and 6453 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:44,385 INFO L93 Difference]: Finished difference Result 3506 states and 8992 transitions. [2021-10-13 22:34:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:44,386 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:44,389 INFO L225 Difference]: With dead ends: 3506 [2021-10-13 22:34:44,389 INFO L226 Difference]: Without dead ends: 3236 [2021-10-13 22:34:44,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 314.3ms TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-10-13 22:34:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2413. [2021-10-13 22:34:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.7686567164179103) internal successors, (6678), 2412 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6678 transitions. [2021-10-13 22:34:44,415 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6678 transitions. Word has length 95 [2021-10-13 22:34:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:44,415 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 6678 transitions. [2021-10-13 22:34:44,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6678 transitions. [2021-10-13 22:34:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:44,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:44,417 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:44,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:44,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-10-13 22:34:44,618 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash -176288168, now seen corresponding path program 78 times [2021-10-13 22:34:44,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:44,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35188602] [2021-10-13 22:34:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:44,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:44,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:44,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35188602] [2021-10-13 22:34:44,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35188602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:44,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024782234] [2021-10-13 22:34:44,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:44,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:44,744 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:44,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-13 22:34:46,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:34:46,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:46,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:46,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024782234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:47,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:47,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:47,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107174475] [2021-10-13 22:34:47,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:47,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:47,047 INFO L87 Difference]: Start difference. First operand 2413 states and 6678 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:47,343 INFO L93 Difference]: Finished difference Result 3531 states and 9117 transitions. [2021-10-13 22:34:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:34:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:47,347 INFO L225 Difference]: With dead ends: 3531 [2021-10-13 22:34:47,347 INFO L226 Difference]: Without dead ends: 3261 [2021-10-13 22:34:47,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 253.1ms TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-10-13 22:34:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2488. [2021-10-13 22:34:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7756332931242462) internal successors, (6903), 2487 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6903 transitions. [2021-10-13 22:34:47,377 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6903 transitions. Word has length 95 [2021-10-13 22:34:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:47,377 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6903 transitions. [2021-10-13 22:34:47,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6903 transitions. [2021-10-13 22:34:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:47,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:47,379 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:47,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:47,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-13 22:34:47,579 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash 697705288, now seen corresponding path program 79 times [2021-10-13 22:34:47,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:47,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658827119] [2021-10-13 22:34:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:47,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:47,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:47,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658827119] [2021-10-13 22:34:47,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658827119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:47,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487360515] [2021-10-13 22:34:47,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:47,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:47,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:47,713 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:47,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 22:34:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:49,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:49,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:50,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487360515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:50,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:50,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:50,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343467820] [2021-10-13 22:34:50,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:50,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:50,047 INFO L87 Difference]: Start difference. First operand 2488 states and 6903 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:50,419 INFO L93 Difference]: Finished difference Result 3556 states and 9242 transitions. [2021-10-13 22:34:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:34:50,419 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:50,423 INFO L225 Difference]: With dead ends: 3556 [2021-10-13 22:34:50,423 INFO L226 Difference]: Without dead ends: 3286 [2021-10-13 22:34:50,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 349.6ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:34:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-10-13 22:34:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2563. [2021-10-13 22:34:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.782201405152225) internal successors, (7128), 2562 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7128 transitions. [2021-10-13 22:34:50,451 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7128 transitions. Word has length 95 [2021-10-13 22:34:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:50,452 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 7128 transitions. [2021-10-13 22:34:50,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7128 transitions. [2021-10-13 22:34:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:50,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:50,454 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:50,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-13 22:34:50,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-13 22:34:50,654 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:50,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1192998998, now seen corresponding path program 80 times [2021-10-13 22:34:50,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:50,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724081045] [2021-10-13 22:34:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:50,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:50,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:50,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724081045] [2021-10-13 22:34:50,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724081045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:50,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803342324] [2021-10-13 22:34:50,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:50,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:50,796 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:50,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 22:34:52,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:52,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:52,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:52,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:53,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803342324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:53,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:53,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:53,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904648150] [2021-10-13 22:34:53,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:53,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:53,119 INFO L87 Difference]: Start difference. First operand 2563 states and 7128 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:53,449 INFO L93 Difference]: Finished difference Result 3581 states and 9367 transitions. [2021-10-13 22:34:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:34:53,450 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:53,453 INFO L225 Difference]: With dead ends: 3581 [2021-10-13 22:34:53,453 INFO L226 Difference]: Without dead ends: 3311 [2021-10-13 22:34:53,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 265.9ms TimeCoverageRelationStatistics Valid=461, Invalid=1345, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:34:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-10-13 22:34:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2638. [2021-10-13 22:34:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.78839590443686) internal successors, (7353), 2637 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7353 transitions. [2021-10-13 22:34:53,481 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7353 transitions. Word has length 95 [2021-10-13 22:34:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:53,481 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 7353 transitions. [2021-10-13 22:34:53,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7353 transitions. [2021-10-13 22:34:53,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:53,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:53,484 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:53,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-13 22:34:53,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:53,684 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1351861946, now seen corresponding path program 81 times [2021-10-13 22:34:53,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:53,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351523717] [2021-10-13 22:34:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:53,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:53,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:53,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351523717] [2021-10-13 22:34:53,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351523717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:53,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735123306] [2021-10-13 22:34:53,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:53,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:53,808 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:53,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-13 22:34:55,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:34:55,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:55,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:34:55,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:56,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735123306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:56,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:56,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:56,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207377920] [2021-10-13 22:34:56,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:56,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:56,168 INFO L87 Difference]: Start difference. First operand 2638 states and 7353 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:56,577 INFO L93 Difference]: Finished difference Result 3606 states and 9492 transitions. [2021-10-13 22:34:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:34:56,578 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:56,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:56,582 INFO L225 Difference]: With dead ends: 3606 [2021-10-13 22:34:56,582 INFO L226 Difference]: Without dead ends: 3336 [2021-10-13 22:34:56,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 369.1ms TimeCoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:34:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-10-13 22:34:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2713. [2021-10-13 22:34:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7942477876106193) internal successors, (7578), 2712 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:56,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7578 transitions. [2021-10-13 22:34:56,615 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7578 transitions. Word has length 95 [2021-10-13 22:34:56,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:56,615 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7578 transitions. [2021-10-13 22:34:56,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7578 transitions. [2021-10-13 22:34:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:56,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:56,617 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:56,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:56,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:56,818 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash -441964588, now seen corresponding path program 82 times [2021-10-13 22:34:56,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:56,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344885245] [2021-10-13 22:34:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:56,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:56,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:56,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344885245] [2021-10-13 22:34:56,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344885245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:56,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634609093] [2021-10-13 22:34:56,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:56,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:56,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:56,935 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:34:56,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 22:34:59,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:59,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:59,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:59,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634609093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:59,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:59,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:59,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438105429] [2021-10-13 22:34:59,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:59,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:59,301 INFO L87 Difference]: Start difference. First operand 2713 states and 7578 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:59,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:59,676 INFO L93 Difference]: Finished difference Result 3631 states and 9617 transitions. [2021-10-13 22:34:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:34:59,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:34:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:59,682 INFO L225 Difference]: With dead ends: 3631 [2021-10-13 22:34:59,682 INFO L226 Difference]: Without dead ends: 3361 [2021-10-13 22:34:59,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 320.4ms TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:34:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-10-13 22:34:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2788. [2021-10-13 22:34:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.79978471474704) internal successors, (7803), 2787 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7803 transitions. [2021-10-13 22:34:59,722 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7803 transitions. Word has length 95 [2021-10-13 22:34:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:59,722 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7803 transitions. [2021-10-13 22:34:59,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7803 transitions. [2021-10-13 22:34:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:59,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:59,725 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:59,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-13 22:34:59,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:59,926 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:59,926 INFO L82 PathProgramCache]: Analyzing trace with hash -309848892, now seen corresponding path program 83 times [2021-10-13 22:34:59,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:59,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014709983] [2021-10-13 22:34:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:59,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:00,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:00,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014709983] [2021-10-13 22:35:00,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014709983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:00,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501952752] [2021-10-13 22:35:00,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:00,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:00,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:00,049 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:00,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-13 22:35:02,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:02,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:02,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:02,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:02,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501952752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:02,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:02,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:35:02,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405438258] [2021-10-13 22:35:02,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:02,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:02,492 INFO L87 Difference]: Start difference. First operand 2788 states and 7803 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:02,894 INFO L93 Difference]: Finished difference Result 3716 states and 9907 transitions. [2021-10-13 22:35:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:35:02,895 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:35:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:02,899 INFO L225 Difference]: With dead ends: 3716 [2021-10-13 22:35:02,899 INFO L226 Difference]: Without dead ends: 3446 [2021-10-13 22:35:02,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 368.9ms TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2021-10-13 22:35:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2863. [2021-10-13 22:35:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.8120195667365477) internal successors, (8048), 2862 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 8048 transitions. [2021-10-13 22:35:02,930 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 8048 transitions. Word has length 95 [2021-10-13 22:35:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:02,931 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 8048 transitions. [2021-10-13 22:35:02,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 8048 transitions. [2021-10-13 22:35:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:02,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:02,933 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:02,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:03,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:03,134 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:03,134 INFO L82 PathProgramCache]: Analyzing trace with hash -766231342, now seen corresponding path program 84 times [2021-10-13 22:35:03,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:03,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125601609] [2021-10-13 22:35:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:03,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:03,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:03,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125601609] [2021-10-13 22:35:03,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125601609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:03,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060622182] [2021-10-13 22:35:03,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:03,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:03,250 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:03,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-13 22:35:05,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:35:05,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:05,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:05,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060622182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:05,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:05,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:35:05,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390172106] [2021-10-13 22:35:05,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:35:05,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:35:05,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:35:05,713 INFO L87 Difference]: Start difference. First operand 2863 states and 8048 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:06,054 INFO L93 Difference]: Finished difference Result 4458 states and 12031 transitions. [2021-10-13 22:35:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:35:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:35:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:06,060 INFO L225 Difference]: With dead ends: 4458 [2021-10-13 22:35:06,060 INFO L226 Difference]: Without dead ends: 4188 [2021-10-13 22:35:06,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 304.9ms TimeCoverageRelationStatistics Valid=626, Invalid=1536, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-10-13 22:35:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3043. [2021-10-13 22:35:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 2.829388560157791) internal successors, (8607), 3042 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 8607 transitions. [2021-10-13 22:35:06,093 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 8607 transitions. Word has length 95 [2021-10-13 22:35:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:06,093 INFO L470 AbstractCegarLoop]: Abstraction has 3043 states and 8607 transitions. [2021-10-13 22:35:06,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 8607 transitions. [2021-10-13 22:35:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:06,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:06,109 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:06,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:06,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:06,309 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:06,310 INFO L82 PathProgramCache]: Analyzing trace with hash -700989052, now seen corresponding path program 85 times [2021-10-13 22:35:06,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:06,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228370448] [2021-10-13 22:35:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:06,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:06,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:06,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228370448] [2021-10-13 22:35:06,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228370448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:06,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003085859] [2021-10-13 22:35:06,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:06,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:06,427 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:06,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-13 22:35:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:08,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:08,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:08,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003085859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:08,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:08,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:35:08,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145823520] [2021-10-13 22:35:08,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:08,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:08,887 INFO L87 Difference]: Start difference. First operand 3043 states and 8607 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:09,320 INFO L93 Difference]: Finished difference Result 3920 states and 10681 transitions. [2021-10-13 22:35:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:35:09,320 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 22:35:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:09,325 INFO L225 Difference]: With dead ends: 3920 [2021-10-13 22:35:09,325 INFO L226 Difference]: Without dead ends: 3431 [2021-10-13 22:35:09,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 392.8ms TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:35:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2021-10-13 22:35:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2034. [2021-10-13 22:35:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2033 states have (on average 2.73782587309395) internal successors, (5566), 2033 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 5566 transitions. [2021-10-13 22:35:09,348 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 5566 transitions. Word has length 95 [2021-10-13 22:35:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:09,348 INFO L470 AbstractCegarLoop]: Abstraction has 2034 states and 5566 transitions. [2021-10-13 22:35:09,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 5566 transitions. [2021-10-13 22:35:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:09,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:09,350 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:09,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-13 22:35:09,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-10-13 22:35:09,550 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1226377678, now seen corresponding path program 86 times [2021-10-13 22:35:09,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:09,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762428693] [2021-10-13 22:35:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:09,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:09,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:09,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762428693] [2021-10-13 22:35:09,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762428693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:09,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254181307] [2021-10-13 22:35:09,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:09,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:09,749 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:09,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-13 22:35:12,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:12,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:12,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:12,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:12,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254181307] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:12,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:12,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2021-10-13 22:35:12,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725316719] [2021-10-13 22:35:12,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:35:12,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:35:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:35:12,429 INFO L87 Difference]: Start difference. First operand 2034 states and 5566 transitions. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:12,695 INFO L93 Difference]: Finished difference Result 3024 states and 7866 transitions. [2021-10-13 22:35:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:12,699 INFO L225 Difference]: With dead ends: 3024 [2021-10-13 22:35:12,699 INFO L226 Difference]: Without dead ends: 2690 [2021-10-13 22:35:12,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 299.6ms TimeCoverageRelationStatistics Valid=474, Invalid=1332, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:35:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-10-13 22:35:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2119. [2021-10-13 22:35:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2118 states have (on average 2.7082152974504248) internal successors, (5736), 2118 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 5736 transitions. [2021-10-13 22:35:12,721 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 5736 transitions. Word has length 100 [2021-10-13 22:35:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:12,721 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 5736 transitions. [2021-10-13 22:35:12,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 5736 transitions. [2021-10-13 22:35:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:12,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:12,733 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:12,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:12,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-10-13 22:35:12,934 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:12,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1710563978, now seen corresponding path program 87 times [2021-10-13 22:35:12,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:12,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124452116] [2021-10-13 22:35:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:12,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:13,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124452116] [2021-10-13 22:35:13,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124452116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368971106] [2021-10-13 22:35:13,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:13,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:13,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:13,096 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:13,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-13 22:35:15,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:15,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:15,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:15,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:15,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368971106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:15,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:15,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:15,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768255769] [2021-10-13 22:35:15,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:15,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:15,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:15,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:15,814 INFO L87 Difference]: Start difference. First operand 2119 states and 5736 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:16,031 INFO L93 Difference]: Finished difference Result 3646 states and 9047 transitions. [2021-10-13 22:35:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:35:16,032 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:16,036 INFO L225 Difference]: With dead ends: 3646 [2021-10-13 22:35:16,036 INFO L226 Difference]: Without dead ends: 3376 [2021-10-13 22:35:16,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 241.2ms TimeCoverageRelationStatistics Valid=359, Invalid=973, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:35:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2021-10-13 22:35:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2263. [2021-10-13 22:35:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.720159151193634) internal successors, (6153), 2262 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6153 transitions. [2021-10-13 22:35:16,067 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6153 transitions. Word has length 100 [2021-10-13 22:35:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:16,067 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6153 transitions. [2021-10-13 22:35:16,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6153 transitions. [2021-10-13 22:35:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:16,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:16,069 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:16,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-13 22:35:16,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:16,270 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1577299558, now seen corresponding path program 88 times [2021-10-13 22:35:16,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:16,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080386832] [2021-10-13 22:35:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:16,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:16,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:16,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080386832] [2021-10-13 22:35:16,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080386832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:16,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645168684] [2021-10-13 22:35:16,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:16,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:16,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:16,461 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:16,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 22:35:18,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:18,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:18,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:18,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:19,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645168684] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:19,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:19,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:35:19,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450321885] [2021-10-13 22:35:19,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:19,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:19,284 INFO L87 Difference]: Start difference. First operand 2263 states and 6153 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:19,553 INFO L93 Difference]: Finished difference Result 3606 states and 9042 transitions. [2021-10-13 22:35:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:19,563 INFO L225 Difference]: With dead ends: 3606 [2021-10-13 22:35:19,563 INFO L226 Difference]: Without dead ends: 3336 [2021-10-13 22:35:19,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 295.5ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:35:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-10-13 22:35:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2338. [2021-10-13 22:35:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.729139922978177) internal successors, (6378), 2337 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6378 transitions. [2021-10-13 22:35:19,590 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6378 transitions. Word has length 100 [2021-10-13 22:35:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:19,590 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 6378 transitions. [2021-10-13 22:35:19,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6378 transitions. [2021-10-13 22:35:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:19,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:19,592 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:19,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-13 22:35:19,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:19,807 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:19,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1712420596, now seen corresponding path program 89 times [2021-10-13 22:35:19,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:19,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169169509] [2021-10-13 22:35:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:19,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:19,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:19,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169169509] [2021-10-13 22:35:19,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169169509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:19,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682991451] [2021-10-13 22:35:19,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:19,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:19,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:19,963 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:19,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-13 22:35:22,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:22,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:22,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:22,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:22,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682991451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:22,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:22,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:22,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53312567] [2021-10-13 22:35:22,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:22,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:22,772 INFO L87 Difference]: Start difference. First operand 2338 states and 6378 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:23,011 INFO L93 Difference]: Finished difference Result 3656 states and 9217 transitions. [2021-10-13 22:35:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:35:23,011 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:23,016 INFO L225 Difference]: With dead ends: 3656 [2021-10-13 22:35:23,016 INFO L226 Difference]: Without dead ends: 3386 [2021-10-13 22:35:23,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 256.2ms TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:35:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-10-13 22:35:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2413. [2021-10-13 22:35:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.737562189054726) internal successors, (6603), 2412 states have internal predecessors, (6603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6603 transitions. [2021-10-13 22:35:23,042 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6603 transitions. Word has length 100 [2021-10-13 22:35:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:23,042 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 6603 transitions. [2021-10-13 22:35:23,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6603 transitions. [2021-10-13 22:35:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:23,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:23,044 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:23,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:23,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:23,245 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1623045092, now seen corresponding path program 90 times [2021-10-13 22:35:23,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:23,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941839575] [2021-10-13 22:35:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:23,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:23,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:23,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941839575] [2021-10-13 22:35:23,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941839575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:23,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296055611] [2021-10-13 22:35:23,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:23,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:23,430 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:23,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-13 22:35:25,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:35:25,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:25,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:25,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296055611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:26,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:26,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:35:26,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385689806] [2021-10-13 22:35:26,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:26,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:26,231 INFO L87 Difference]: Start difference. First operand 2413 states and 6603 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:26,561 INFO L93 Difference]: Finished difference Result 3681 states and 9342 transitions. [2021-10-13 22:35:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:35:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:26,565 INFO L225 Difference]: With dead ends: 3681 [2021-10-13 22:35:26,565 INFO L226 Difference]: Without dead ends: 3411 [2021-10-13 22:35:26,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 323.4ms TimeCoverageRelationStatistics Valid=434, Invalid=1372, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:35:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-10-13 22:35:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2488. [2021-10-13 22:35:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7454764776839564) internal successors, (6828), 2487 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6828 transitions. [2021-10-13 22:35:26,591 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6828 transitions. Word has length 100 [2021-10-13 22:35:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:26,591 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6828 transitions. [2021-10-13 22:35:26,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6828 transitions. [2021-10-13 22:35:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:26,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:26,593 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:26,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-13 22:35:26,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:26,794 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:26,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:26,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1090794994, now seen corresponding path program 91 times [2021-10-13 22:35:26,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:26,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348740680] [2021-10-13 22:35:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:26,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:26,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:26,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348740680] [2021-10-13 22:35:26,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348740680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:26,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567956116] [2021-10-13 22:35:26,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:26,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:26,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:26,941 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:26,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 22:35:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:29,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:29,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:29,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567956116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:29,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:29,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:29,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254329282] [2021-10-13 22:35:29,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:29,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:29,819 INFO L87 Difference]: Start difference. First operand 2488 states and 6828 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:30,117 INFO L93 Difference]: Finished difference Result 3706 states and 9467 transitions. [2021-10-13 22:35:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:35:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:30,122 INFO L225 Difference]: With dead ends: 3706 [2021-10-13 22:35:30,122 INFO L226 Difference]: Without dead ends: 3436 [2021-10-13 22:35:30,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 287.6ms TimeCoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:35:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-10-13 22:35:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 2563. [2021-10-13 22:35:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.752927400468384) internal successors, (7053), 2562 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7053 transitions. [2021-10-13 22:35:30,157 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7053 transitions. Word has length 100 [2021-10-13 22:35:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:30,157 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 7053 transitions. [2021-10-13 22:35:30,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7053 transitions. [2021-10-13 22:35:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:30,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:30,159 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:30,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:30,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-10-13 22:35:30,363 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1418010910, now seen corresponding path program 92 times [2021-10-13 22:35:30,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:30,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817306348] [2021-10-13 22:35:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:30,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:30,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:30,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817306348] [2021-10-13 22:35:30,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817306348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:30,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835760440] [2021-10-13 22:35:30,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:30,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:30,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:30,522 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:30,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 22:35:33,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:33,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:33,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:33,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:33,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835760440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:33,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:33,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:35:33,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528780956] [2021-10-13 22:35:33,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:33,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:33,394 INFO L87 Difference]: Start difference. First operand 2563 states and 7053 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:33,744 INFO L93 Difference]: Finished difference Result 3731 states and 9592 transitions. [2021-10-13 22:35:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:35:33,744 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:33,748 INFO L225 Difference]: With dead ends: 3731 [2021-10-13 22:35:33,748 INFO L226 Difference]: Without dead ends: 3461 [2021-10-13 22:35:33,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 344.1ms TimeCoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:35:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-10-13 22:35:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2638. [2021-10-13 22:35:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.7599544937428897) internal successors, (7278), 2637 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7278 transitions. [2021-10-13 22:35:33,776 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7278 transitions. Word has length 100 [2021-10-13 22:35:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:33,776 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 7278 transitions. [2021-10-13 22:35:33,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7278 transitions. [2021-10-13 22:35:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:33,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:33,779 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:33,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-13 22:35:33,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-13 22:35:33,979 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1488192912, now seen corresponding path program 93 times [2021-10-13 22:35:33,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:33,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928679774] [2021-10-13 22:35:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:33,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:34,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:34,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928679774] [2021-10-13 22:35:34,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928679774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:34,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432874138] [2021-10-13 22:35:34,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:34,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:34,154 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:34,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 22:35:36,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:36,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:36,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 22:35:36,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:36,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432874138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:36,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:36,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:36,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248511568] [2021-10-13 22:35:36,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:36,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:36,975 INFO L87 Difference]: Start difference. First operand 2638 states and 7278 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:37,290 INFO L93 Difference]: Finished difference Result 3756 states and 9717 transitions. [2021-10-13 22:35:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:35:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:37,294 INFO L225 Difference]: With dead ends: 3756 [2021-10-13 22:35:37,294 INFO L226 Difference]: Without dead ends: 3486 [2021-10-13 22:35:37,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 281.6ms TimeCoverageRelationStatistics Valid=437, Invalid=1369, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:35:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2021-10-13 22:35:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 2713. [2021-10-13 22:35:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7665929203539825) internal successors, (7503), 2712 states have internal predecessors, (7503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7503 transitions. [2021-10-13 22:35:37,322 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7503 transitions. Word has length 100 [2021-10-13 22:35:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:37,322 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7503 transitions. [2021-10-13 22:35:37,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7503 transitions. [2021-10-13 22:35:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:37,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:37,325 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:37,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-13 22:35:37,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-13 22:35:37,525 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:37,525 INFO L82 PathProgramCache]: Analyzing trace with hash -614199456, now seen corresponding path program 94 times [2021-10-13 22:35:37,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:37,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941498479] [2021-10-13 22:35:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:37,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:37,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:37,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941498479] [2021-10-13 22:35:37,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941498479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:37,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056712598] [2021-10-13 22:35:37,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:37,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:37,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:37,664 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:37,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-13 22:35:40,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:40,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:40,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:40,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:40,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056712598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:40,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:40,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:35:40,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737550491] [2021-10-13 22:35:40,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:40,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:40,611 INFO L87 Difference]: Start difference. First operand 2713 states and 7503 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:41,007 INFO L93 Difference]: Finished difference Result 3781 states and 9842 transitions. [2021-10-13 22:35:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:35:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:41,011 INFO L225 Difference]: With dead ends: 3781 [2021-10-13 22:35:41,011 INFO L226 Difference]: Without dead ends: 3511 [2021-10-13 22:35:41,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 375.2ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2021-10-13 22:35:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2788. [2021-10-13 22:35:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.772874058127018) internal successors, (7728), 2787 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7728 transitions. [2021-10-13 22:35:41,058 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7728 transitions. Word has length 100 [2021-10-13 22:35:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:41,058 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7728 transitions. [2021-10-13 22:35:41,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7728 transitions. [2021-10-13 22:35:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:41,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:41,060 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:41,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-10-13 22:35:41,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-13 22:35:41,261 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:41,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:41,261 INFO L82 PathProgramCache]: Analyzing trace with hash -118905746, now seen corresponding path program 95 times [2021-10-13 22:35:41,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:41,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565074101] [2021-10-13 22:35:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:41,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:41,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:41,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565074101] [2021-10-13 22:35:41,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565074101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:41,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679926603] [2021-10-13 22:35:41,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:41,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:41,410 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:41,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-13 22:35:44,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:44,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:44,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679926603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:44,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:44,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:44,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617680090] [2021-10-13 22:35:44,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:44,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:44,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:44,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:44,342 INFO L87 Difference]: Start difference. First operand 2788 states and 7728 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:44,697 INFO L93 Difference]: Finished difference Result 3806 states and 9967 transitions. [2021-10-13 22:35:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:35:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:44,701 INFO L225 Difference]: With dead ends: 3806 [2021-10-13 22:35:44,701 INFO L226 Difference]: Without dead ends: 3536 [2021-10-13 22:35:44,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 330.7ms TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:35:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2021-10-13 22:35:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2863. [2021-10-13 22:35:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.7788259958071277) internal successors, (7953), 2862 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7953 transitions. [2021-10-13 22:35:44,732 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7953 transitions. Word has length 100 [2021-10-13 22:35:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:44,733 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 7953 transitions. [2021-10-13 22:35:44,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7953 transitions. [2021-10-13 22:35:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:44,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:44,735 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:44,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:44,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-13 22:35:44,936 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:44,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1631200606, now seen corresponding path program 96 times [2021-10-13 22:35:44,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:44,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985855760] [2021-10-13 22:35:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:44,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:45,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:45,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985855760] [2021-10-13 22:35:45,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985855760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:45,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855482337] [2021-10-13 22:35:45,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:45,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:45,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:45,104 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:45,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-13 22:35:47,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:35:47,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:47,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:35:47,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:48,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855482337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:48,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:48,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:35:48,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510557492] [2021-10-13 22:35:48,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:48,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:48,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:48,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:48,077 INFO L87 Difference]: Start difference. First operand 2863 states and 7953 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:48,482 INFO L93 Difference]: Finished difference Result 3831 states and 10092 transitions. [2021-10-13 22:35:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:35:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:48,487 INFO L225 Difference]: With dead ends: 3831 [2021-10-13 22:35:48,487 INFO L226 Difference]: Without dead ends: 3561 [2021-10-13 22:35:48,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 372.1ms TimeCoverageRelationStatistics Valid=498, Invalid=1664, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-10-13 22:35:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2938. [2021-10-13 22:35:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.7844739530132787) internal successors, (8178), 2937 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8178 transitions. [2021-10-13 22:35:48,525 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8178 transitions. Word has length 100 [2021-10-13 22:35:48,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:48,525 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 8178 transitions. [2021-10-13 22:35:48,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8178 transitions. [2021-10-13 22:35:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:48,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:48,527 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:48,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:48,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:48,739 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:48,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1753869332, now seen corresponding path program 97 times [2021-10-13 22:35:48,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:48,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724624302] [2021-10-13 22:35:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:48,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:48,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:48,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724624302] [2021-10-13 22:35:48,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724624302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:48,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990988048] [2021-10-13 22:35:48,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:48,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:48,919 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:48,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-13 22:35:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:51,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:51,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:51,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990988048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:51,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:51,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:51,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595553561] [2021-10-13 22:35:51,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:51,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:51,874 INFO L87 Difference]: Start difference. First operand 2938 states and 8178 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:52,232 INFO L93 Difference]: Finished difference Result 3856 states and 10217 transitions. [2021-10-13 22:35:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:35:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:52,236 INFO L225 Difference]: With dead ends: 3856 [2021-10-13 22:35:52,237 INFO L226 Difference]: Without dead ends: 3586 [2021-10-13 22:35:52,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 357.4ms TimeCoverageRelationStatistics Valid=569, Invalid=1593, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-10-13 22:35:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3013. [2021-10-13 22:35:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.789840637450199) internal successors, (8403), 3012 states have internal predecessors, (8403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8403 transitions. [2021-10-13 22:35:52,271 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8403 transitions. Word has length 100 [2021-10-13 22:35:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:52,271 INFO L470 AbstractCegarLoop]: Abstraction has 3013 states and 8403 transitions. [2021-10-13 22:35:52,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8403 transitions. [2021-10-13 22:35:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:52,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:52,276 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:52,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-13 22:35:52,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:52,486 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:52,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1621753636, now seen corresponding path program 98 times [2021-10-13 22:35:52,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:52,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245899764] [2021-10-13 22:35:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:52,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:52,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:52,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245899764] [2021-10-13 22:35:52,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245899764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:52,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296614376] [2021-10-13 22:35:52,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:52,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:52,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:52,627 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:52,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-13 22:35:55,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:55,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:55,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:55,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:55,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296614376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:55,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:55,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:35:55,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522194934] [2021-10-13 22:35:55,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:55,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:55,635 INFO L87 Difference]: Start difference. First operand 3013 states and 8403 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:56,111 INFO L93 Difference]: Finished difference Result 3941 states and 10507 transitions. [2021-10-13 22:35:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:35:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:56,116 INFO L225 Difference]: With dead ends: 3941 [2021-10-13 22:35:56,116 INFO L226 Difference]: Without dead ends: 3671 [2021-10-13 22:35:56,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 440.6ms TimeCoverageRelationStatistics Valid=666, Invalid=1884, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:35:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-10-13 22:35:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3088. [2021-10-13 22:35:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.801425332037577) internal successors, (8648), 3087 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8648 transitions. [2021-10-13 22:35:56,149 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8648 transitions. Word has length 100 [2021-10-13 22:35:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:56,149 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 8648 transitions. [2021-10-13 22:35:56,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8648 transitions. [2021-10-13 22:35:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:56,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:56,152 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:56,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-10-13 22:35:56,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-13 22:35:56,352 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2078136086, now seen corresponding path program 99 times [2021-10-13 22:35:56,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:56,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815483575] [2021-10-13 22:35:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:56,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:56,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:56,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815483575] [2021-10-13 22:35:56,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815483575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:56,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5546756] [2021-10-13 22:35:56,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:56,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:56,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:56,533 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:56,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-13 22:35:59,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:59,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:59,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:59,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5546756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:59,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:59,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:59,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951069540] [2021-10-13 22:35:59,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:59,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:59,494 INFO L87 Difference]: Start difference. First operand 3088 states and 8648 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:59,877 INFO L93 Difference]: Finished difference Result 4708 states and 12681 transitions. [2021-10-13 22:35:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:35:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:35:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:59,882 INFO L225 Difference]: With dead ends: 4708 [2021-10-13 22:35:59,882 INFO L226 Difference]: Without dead ends: 4438 [2021-10-13 22:35:59,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 343.4ms TimeCoverageRelationStatistics Valid=660, Invalid=1692, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:35:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-10-13 22:35:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3268. [2021-10-13 22:35:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3267 states have (on average 2.8181818181818183) internal successors, (9207), 3267 states have internal predecessors, (9207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 9207 transitions. [2021-10-13 22:35:59,946 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 9207 transitions. Word has length 100 [2021-10-13 22:35:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:59,946 INFO L470 AbstractCegarLoop]: Abstraction has 3268 states and 9207 transitions. [2021-10-13 22:35:59,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 9207 transitions. [2021-10-13 22:35:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:59,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:59,948 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:59,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-13 22:36:00,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-13 22:36:00,149 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:00,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2012893796, now seen corresponding path program 100 times [2021-10-13 22:36:00,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:00,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315588744] [2021-10-13 22:36:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:00,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:00,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:00,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315588744] [2021-10-13 22:36:00,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315588744] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:00,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150776930] [2021-10-13 22:36:00,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:00,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:00,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:00,272 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:00,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-13 22:36:03,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:03,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:03,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:03,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:03,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150776930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:03,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:03,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:36:03,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23972297] [2021-10-13 22:36:03,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:36:03,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:36:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:36:03,310 INFO L87 Difference]: Start difference. First operand 3268 states and 9207 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:03,832 INFO L93 Difference]: Finished difference Result 4195 states and 11381 transitions. [2021-10-13 22:36:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:36:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 22:36:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:03,837 INFO L225 Difference]: With dead ends: 4195 [2021-10-13 22:36:03,837 INFO L226 Difference]: Without dead ends: 3706 [2021-10-13 22:36:03,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 479.2ms TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:36:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-10-13 22:36:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 2313. [2021-10-13 22:36:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2312 states have (on average 2.737024221453287) internal successors, (6328), 2312 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 6328 transitions. [2021-10-13 22:36:03,870 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 6328 transitions. Word has length 100 [2021-10-13 22:36:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:03,870 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 6328 transitions. [2021-10-13 22:36:03,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 6328 transitions. [2021-10-13 22:36:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:03,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:03,872 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:03,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:04,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:04,073 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash -522543603, now seen corresponding path program 101 times [2021-10-13 22:36:04,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:04,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125955634] [2021-10-13 22:36:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:04,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:04,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:04,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125955634] [2021-10-13 22:36:04,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125955634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:04,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798948645] [2021-10-13 22:36:04,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:04,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:04,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:04,259 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:04,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-13 22:36:07,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:36:07,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:07,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:07,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:07,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798948645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:07,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:07,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:07,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943824770] [2021-10-13 22:36:07,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:07,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:07,478 INFO L87 Difference]: Start difference. First operand 2313 states and 6328 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:07,729 INFO L93 Difference]: Finished difference Result 3431 states and 8767 transitions. [2021-10-13 22:36:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:36:07,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:07,733 INFO L225 Difference]: With dead ends: 3431 [2021-10-13 22:36:07,733 INFO L226 Difference]: Without dead ends: 3161 [2021-10-13 22:36:07,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 277.9ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:36:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2021-10-13 22:36:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2388. [2021-10-13 22:36:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2387 states have (on average 2.7452869710934227) internal successors, (6553), 2387 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 6553 transitions. [2021-10-13 22:36:07,757 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 6553 transitions. Word has length 105 [2021-10-13 22:36:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:07,757 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 6553 transitions. [2021-10-13 22:36:07,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 6553 transitions. [2021-10-13 22:36:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:07,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:07,760 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:07,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:07,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:07,960 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:07,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1529647363, now seen corresponding path program 102 times [2021-10-13 22:36:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:07,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42146927] [2021-10-13 22:36:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:07,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:08,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:08,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42146927] [2021-10-13 22:36:08,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42146927] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:08,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825616710] [2021-10-13 22:36:08,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:08,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:08,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:08,138 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:08,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-13 22:36:11,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:36:11,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:11,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:11,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:11,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825616710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:11,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:11,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:11,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290286207] [2021-10-13 22:36:11,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:11,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:11,398 INFO L87 Difference]: Start difference. First operand 2388 states and 6553 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:11,686 INFO L93 Difference]: Finished difference Result 3801 states and 9582 transitions. [2021-10-13 22:36:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:36:11,686 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:11,690 INFO L225 Difference]: With dead ends: 3801 [2021-10-13 22:36:11,690 INFO L226 Difference]: Without dead ends: 3531 [2021-10-13 22:36:11,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 319.5ms TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:36:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2021-10-13 22:36:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 2463. [2021-10-13 22:36:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2462 states have (on average 2.753046303818034) internal successors, (6778), 2462 states have internal predecessors, (6778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 6778 transitions. [2021-10-13 22:36:11,716 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 6778 transitions. Word has length 105 [2021-10-13 22:36:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:11,716 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 6778 transitions. [2021-10-13 22:36:11,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 6778 transitions. [2021-10-13 22:36:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:11,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:11,718 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:11,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:11,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2021-10-13 22:36:11,920 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:11,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1394526325, now seen corresponding path program 103 times [2021-10-13 22:36:11,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:11,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813044685] [2021-10-13 22:36:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:11,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:12,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:12,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813044685] [2021-10-13 22:36:12,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813044685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:12,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477995017] [2021-10-13 22:36:12,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:12,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:12,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:12,093 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:12,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-13 22:36:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:15,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:15,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:15,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477995017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:15,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:15,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:15,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349622979] [2021-10-13 22:36:15,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:15,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:15,397 INFO L87 Difference]: Start difference. First operand 2463 states and 6778 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:15,679 INFO L93 Difference]: Finished difference Result 3831 states and 9717 transitions. [2021-10-13 22:36:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:36:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:15,683 INFO L225 Difference]: With dead ends: 3831 [2021-10-13 22:36:15,683 INFO L226 Difference]: Without dead ends: 3561 [2021-10-13 22:36:15,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 302.1ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:36:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-10-13 22:36:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2538. [2021-10-13 22:36:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2537 states have (on average 2.760346866377611) internal successors, (7003), 2537 states have internal predecessors, (7003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 7003 transitions. [2021-10-13 22:36:15,709 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 7003 transitions. Word has length 105 [2021-10-13 22:36:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:15,710 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 7003 transitions. [2021-10-13 22:36:15,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 7003 transitions. [2021-10-13 22:36:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:15,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:15,735 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:15,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:15,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-13 22:36:15,935 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:15,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1483901829, now seen corresponding path program 104 times [2021-10-13 22:36:15,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:15,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390293728] [2021-10-13 22:36:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:15,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:16,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:16,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390293728] [2021-10-13 22:36:16,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390293728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:16,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746961899] [2021-10-13 22:36:16,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:16,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:16,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:16,102 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:16,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-13 22:36:19,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:19,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:19,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:19,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:19,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746961899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:19,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:19,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:19,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12619539] [2021-10-13 22:36:19,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:19,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:19,469 INFO L87 Difference]: Start difference. First operand 2538 states and 7003 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:19,807 INFO L93 Difference]: Finished difference Result 3856 states and 9842 transitions. [2021-10-13 22:36:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:36:19,808 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:19,812 INFO L225 Difference]: With dead ends: 3856 [2021-10-13 22:36:19,812 INFO L226 Difference]: Without dead ends: 3586 [2021-10-13 22:36:19,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 353.4ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-10-13 22:36:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 2613. [2021-10-13 22:36:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2612 states have (on average 2.767228177641654) internal successors, (7228), 2612 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 7228 transitions. [2021-10-13 22:36:19,839 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 7228 transitions. Word has length 105 [2021-10-13 22:36:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:19,839 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 7228 transitions. [2021-10-13 22:36:19,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 7228 transitions. [2021-10-13 22:36:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:19,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:19,841 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:19,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2021-10-13 22:36:20,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 22:36:20,042 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2016151927, now seen corresponding path program 105 times [2021-10-13 22:36:20,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:20,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651543103] [2021-10-13 22:36:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:20,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:20,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:20,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651543103] [2021-10-13 22:36:20,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651543103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:20,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367056086] [2021-10-13 22:36:20,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:20,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:20,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:20,225 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:20,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-13 22:36:23,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:36:23,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:23,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 22:36:23,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:23,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367056086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:23,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:23,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:23,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918922671] [2021-10-13 22:36:23,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:23,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:23,535 INFO L87 Difference]: Start difference. First operand 2613 states and 7228 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:23,842 INFO L93 Difference]: Finished difference Result 3881 states and 9967 transitions. [2021-10-13 22:36:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:36:23,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:23,846 INFO L225 Difference]: With dead ends: 3881 [2021-10-13 22:36:23,846 INFO L226 Difference]: Without dead ends: 3611 [2021-10-13 22:36:23,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 305.8ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-10-13 22:36:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2688. [2021-10-13 22:36:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2687 states have (on average 2.773725344250093) internal successors, (7453), 2687 states have internal predecessors, (7453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 7453 transitions. [2021-10-13 22:36:23,894 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 7453 transitions. Word has length 105 [2021-10-13 22:36:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:23,894 INFO L470 AbstractCegarLoop]: Abstraction has 2688 states and 7453 transitions. [2021-10-13 22:36:23,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 7453 transitions. [2021-10-13 22:36:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:23,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:23,896 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:23,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-10-13 22:36:24,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:24,096 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:24,097 INFO L82 PathProgramCache]: Analyzing trace with hash -229990535, now seen corresponding path program 106 times [2021-10-13 22:36:24,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:24,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145109578] [2021-10-13 22:36:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:24,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:24,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:24,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145109578] [2021-10-13 22:36:24,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145109578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:24,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121864351] [2021-10-13 22:36:24,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:24,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:24,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:24,265 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:24,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-13 22:36:27,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:27,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:27,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:27,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:27,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121864351] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:27,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:27,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:27,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363926299] [2021-10-13 22:36:27,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:27,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:27,739 INFO L87 Difference]: Start difference. First operand 2688 states and 7453 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:28,121 INFO L93 Difference]: Finished difference Result 3906 states and 10092 transitions. [2021-10-13 22:36:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:36:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:28,125 INFO L225 Difference]: With dead ends: 3906 [2021-10-13 22:36:28,125 INFO L226 Difference]: Without dead ends: 3636 [2021-10-13 22:36:28,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 383.8ms TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:36:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2021-10-13 22:36:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 2763. [2021-10-13 22:36:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 2.779869659666908) internal successors, (7678), 2762 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 7678 transitions. [2021-10-13 22:36:28,157 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 7678 transitions. Word has length 105 [2021-10-13 22:36:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:28,157 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 7678 transitions. [2021-10-13 22:36:28,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 7678 transitions. [2021-10-13 22:36:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:28,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:28,160 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:28,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:28,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-13 22:36:28,365 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:28,365 INFO L82 PathProgramCache]: Analyzing trace with hash -300172537, now seen corresponding path program 107 times [2021-10-13 22:36:28,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:28,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455167429] [2021-10-13 22:36:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:28,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:28,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:28,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455167429] [2021-10-13 22:36:28,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455167429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:28,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217281681] [2021-10-13 22:36:28,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:28,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:28,518 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:28,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-13 22:36:31,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:36:31,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:31,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:31,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:31,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217281681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:31,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:31,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:31,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160417176] [2021-10-13 22:36:31,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:31,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:31,856 INFO L87 Difference]: Start difference. First operand 2763 states and 7678 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:32,221 INFO L93 Difference]: Finished difference Result 3931 states and 10217 transitions. [2021-10-13 22:36:32,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:36:32,221 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:32,226 INFO L225 Difference]: With dead ends: 3931 [2021-10-13 22:36:32,226 INFO L226 Difference]: Without dead ends: 3661 [2021-10-13 22:36:32,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 350.7ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:36:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2021-10-13 22:36:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2838. [2021-10-13 22:36:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 2.785689108212901) internal successors, (7903), 2837 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 7903 transitions. [2021-10-13 22:36:32,257 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 7903 transitions. Word has length 105 [2021-10-13 22:36:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:32,257 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 7903 transitions. [2021-10-13 22:36:32,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 7903 transitions. [2021-10-13 22:36:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:32,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:32,259 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:32,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-13 22:36:32,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-13 22:36:32,461 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash 573820919, now seen corresponding path program 108 times [2021-10-13 22:36:32,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:32,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965207310] [2021-10-13 22:36:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:32,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:32,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:32,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965207310] [2021-10-13 22:36:32,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965207310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:32,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693184156] [2021-10-13 22:36:32,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:32,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:32,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:32,611 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:32,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-13 22:36:35,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:36:35,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:35,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:35,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:36,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693184156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:36,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:36,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:36,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103259699] [2021-10-13 22:36:36,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:36,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:36,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:36,068 INFO L87 Difference]: Start difference. First operand 2838 states and 7903 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:36,497 INFO L93 Difference]: Finished difference Result 3956 states and 10342 transitions. [2021-10-13 22:36:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:36:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:36,502 INFO L225 Difference]: With dead ends: 3956 [2021-10-13 22:36:36,502 INFO L226 Difference]: Without dead ends: 3686 [2021-10-13 22:36:36,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 405.4ms TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:36:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2021-10-13 22:36:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 2913. [2021-10-13 22:36:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2912 states have (on average 2.791208791208791) internal successors, (8128), 2912 states have internal predecessors, (8128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 8128 transitions. [2021-10-13 22:36:36,537 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 8128 transitions. Word has length 105 [2021-10-13 22:36:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:36,537 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 8128 transitions. [2021-10-13 22:36:36,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 8128 transitions. [2021-10-13 22:36:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:36,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:36,539 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:36,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:36,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-13 22:36:36,755 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1069114629, now seen corresponding path program 109 times [2021-10-13 22:36:36,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:36,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802905789] [2021-10-13 22:36:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:36,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:36,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:36,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802905789] [2021-10-13 22:36:36,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802905789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:36,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080770962] [2021-10-13 22:36:36,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:36,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:36,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:36,919 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:36,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-13 22:36:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:40,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:40,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:40,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080770962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:40,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:40,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:40,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003355455] [2021-10-13 22:36:40,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:40,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:40,351 INFO L87 Difference]: Start difference. First operand 2913 states and 8128 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:40,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:40,711 INFO L93 Difference]: Finished difference Result 3981 states and 10467 transitions. [2021-10-13 22:36:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:36:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:40,716 INFO L225 Difference]: With dead ends: 3981 [2021-10-13 22:36:40,716 INFO L226 Difference]: Without dead ends: 3711 [2021-10-13 22:36:40,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 353.9ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:36:40,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-10-13 22:36:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 2988. [2021-10-13 22:36:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2987 states have (on average 2.7964512889186475) internal successors, (8353), 2987 states have internal predecessors, (8353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 8353 transitions. [2021-10-13 22:36:40,748 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 8353 transitions. Word has length 105 [2021-10-13 22:36:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:40,748 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 8353 transitions. [2021-10-13 22:36:40,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 8353 transitions. [2021-10-13 22:36:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:40,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:40,751 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:40,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-10-13 22:36:40,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-13 22:36:40,951 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1475746315, now seen corresponding path program 110 times [2021-10-13 22:36:40,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:40,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502253666] [2021-10-13 22:36:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:40,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:41,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:41,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502253666] [2021-10-13 22:36:41,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502253666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:41,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326834268] [2021-10-13 22:36:41,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:41,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:41,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:41,142 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:41,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-13 22:36:44,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:44,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:44,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:44,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:44,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326834268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:44,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:44,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:44,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501220579] [2021-10-13 22:36:44,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:44,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:44,628 INFO L87 Difference]: Start difference. First operand 2988 states and 8353 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:45,128 INFO L93 Difference]: Finished difference Result 4006 states and 10592 transitions. [2021-10-13 22:36:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:36:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:45,133 INFO L225 Difference]: With dead ends: 4006 [2021-10-13 22:36:45,133 INFO L226 Difference]: Without dead ends: 3736 [2021-10-13 22:36:45,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 469.2ms TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:36:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-10-13 22:36:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3063. [2021-10-13 22:36:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3062 states have (on average 2.8014369693011103) internal successors, (8578), 3062 states have internal predecessors, (8578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 8578 transitions. [2021-10-13 22:36:45,165 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 8578 transitions. Word has length 105 [2021-10-13 22:36:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:45,166 INFO L470 AbstractCegarLoop]: Abstraction has 3063 states and 8578 transitions. [2021-10-13 22:36:45,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 8578 transitions. [2021-10-13 22:36:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:45,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:45,168 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:45,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:45,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:45,368 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -565848957, now seen corresponding path program 111 times [2021-10-13 22:36:45,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:45,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268312592] [2021-10-13 22:36:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:45,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:45,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:45,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268312592] [2021-10-13 22:36:45,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268312592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:45,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467084114] [2021-10-13 22:36:45,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:45,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:45,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:45,508 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:45,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-13 22:36:48,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:36:48,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:48,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:36:48,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:49,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467084114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:49,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:49,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:49,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509219542] [2021-10-13 22:36:49,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:49,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:49,002 INFO L87 Difference]: Start difference. First operand 3063 states and 8578 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:49,386 INFO L93 Difference]: Finished difference Result 4031 states and 10717 transitions. [2021-10-13 22:36:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:36:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:49,391 INFO L225 Difference]: With dead ends: 4031 [2021-10-13 22:36:49,391 INFO L226 Difference]: Without dead ends: 3761 [2021-10-13 22:36:49,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 357.7ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:36:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-10-13 22:36:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3138. [2021-10-13 22:36:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 2.8061842524705134) internal successors, (8803), 3137 states have internal predecessors, (8803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 8803 transitions. [2021-10-13 22:36:49,449 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 8803 transitions. Word has length 105 [2021-10-13 22:36:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:49,449 INFO L470 AbstractCegarLoop]: Abstraction has 3138 states and 8803 transitions. [2021-10-13 22:36:49,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 8803 transitions. [2021-10-13 22:36:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:49,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:49,451 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:49,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:49,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:49,652 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:49,652 INFO L82 PathProgramCache]: Analyzing trace with hash -433733261, now seen corresponding path program 112 times [2021-10-13 22:36:49,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:49,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994414690] [2021-10-13 22:36:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:49,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:49,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:49,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994414690] [2021-10-13 22:36:49,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994414690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:49,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499525151] [2021-10-13 22:36:49,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:49,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:49,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:49,795 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:49,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-13 22:36:53,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:53,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:53,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:53,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499525151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:53,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:53,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:53,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539268682] [2021-10-13 22:36:53,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:53,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:53,323 INFO L87 Difference]: Start difference. First operand 3138 states and 8803 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:53,827 INFO L93 Difference]: Finished difference Result 4116 states and 11007 transitions. [2021-10-13 22:36:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:36:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:53,832 INFO L225 Difference]: With dead ends: 4116 [2021-10-13 22:36:53,832 INFO L226 Difference]: Without dead ends: 3846 [2021-10-13 22:36:53,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 463.2ms TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:36:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-10-13 22:36:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3213. [2021-10-13 22:36:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 3212 states have (on average 2.816936488169365) internal successors, (9048), 3212 states have internal predecessors, (9048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 9048 transitions. [2021-10-13 22:36:53,882 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 9048 transitions. Word has length 105 [2021-10-13 22:36:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:53,882 INFO L470 AbstractCegarLoop]: Abstraction has 3213 states and 9048 transitions. [2021-10-13 22:36:53,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 9048 transitions. [2021-10-13 22:36:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:53,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:53,885 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:53,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-10-13 22:36:54,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:54,085 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash -890115711, now seen corresponding path program 113 times [2021-10-13 22:36:54,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:54,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726982283] [2021-10-13 22:36:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:54,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:54,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:54,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726982283] [2021-10-13 22:36:54,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726982283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:54,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576972721] [2021-10-13 22:36:54,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:54,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:54,227 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:54,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-13 22:36:57,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:36:57,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:57,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:57,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576972721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:57,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:57,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:57,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477110677] [2021-10-13 22:36:57,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:57,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:57,798 INFO L87 Difference]: Start difference. First operand 3213 states and 9048 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:58,217 INFO L93 Difference]: Finished difference Result 4858 states and 13131 transitions. [2021-10-13 22:36:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:36:58,218 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:36:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:58,223 INFO L225 Difference]: With dead ends: 4858 [2021-10-13 22:36:58,223 INFO L226 Difference]: Without dead ends: 4588 [2021-10-13 22:36:58,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 387.1ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:36:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2021-10-13 22:36:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 3393. [2021-10-13 22:36:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3392 states have (on average 2.832252358490566) internal successors, (9607), 3392 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 9607 transitions. [2021-10-13 22:36:58,260 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 9607 transitions. Word has length 105 [2021-10-13 22:36:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:58,260 INFO L470 AbstractCegarLoop]: Abstraction has 3393 states and 9607 transitions. [2021-10-13 22:36:58,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 9607 transitions. [2021-10-13 22:36:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:58,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:58,263 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:36:58,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2021-10-13 22:36:58,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:58,463 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash -824873421, now seen corresponding path program 114 times [2021-10-13 22:36:58,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:58,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158771828] [2021-10-13 22:36:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:58,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:58,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:58,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158771828] [2021-10-13 22:36:58,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158771828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:58,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501861705] [2021-10-13 22:36:58,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:58,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:58,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:58,601 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:58,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-13 22:37:01,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:37:01,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:01,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:01,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:02,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501861705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:02,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:02,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:37:02,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604161839] [2021-10-13 22:37:02,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:02,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:02,214 INFO L87 Difference]: Start difference. First operand 3393 states and 9607 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:02,776 INFO L93 Difference]: Finished difference Result 4726 states and 12796 transitions. [2021-10-13 22:37:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:37:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 22:37:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:02,782 INFO L225 Difference]: With dead ends: 4726 [2021-10-13 22:37:02,782 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:37:02,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 506.7ms TimeCoverageRelationStatistics Valid=830, Invalid=2592, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:37:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:37:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3428. [2021-10-13 22:37:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.825503355704698) internal successors, (9683), 3427 states have internal predecessors, (9683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9683 transitions. [2021-10-13 22:37:02,817 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9683 transitions. Word has length 105 [2021-10-13 22:37:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:02,817 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 9683 transitions. [2021-10-13 22:37:02,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9683 transitions. [2021-10-13 22:37:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:02,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:02,820 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:02,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:03,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:03,020 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash -817343005, now seen corresponding path program 115 times [2021-10-13 22:37:03,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:03,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077341107] [2021-10-13 22:37:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:03,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:03,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:03,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077341107] [2021-10-13 22:37:03,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077341107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:03,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27564611] [2021-10-13 22:37:03,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:03,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:03,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:03,215 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:03,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-13 22:37:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:06,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:37:06,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:07,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27564611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:07,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:07,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-10-13 22:37:07,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844656564] [2021-10-13 22:37:07,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:37:07,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:37:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:37:07,057 INFO L87 Difference]: Start difference. First operand 3428 states and 9683 transitions. Second operand has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:07,367 INFO L93 Difference]: Finished difference Result 4468 states and 12083 transitions. [2021-10-13 22:37:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:37:07,367 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:07,372 INFO L225 Difference]: With dead ends: 4468 [2021-10-13 22:37:07,372 INFO L226 Difference]: Without dead ends: 4134 [2021-10-13 22:37:07,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 347.5ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:37:07,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2021-10-13 22:37:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3513. [2021-10-13 22:37:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 2.805523917995444) internal successors, (9853), 3512 states have internal predecessors, (9853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 9853 transitions. [2021-10-13 22:37:07,439 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 9853 transitions. Word has length 110 [2021-10-13 22:37:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:07,439 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 9853 transitions. [2021-10-13 22:37:07,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:07,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 9853 transitions. [2021-10-13 22:37:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:07,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:07,442 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:07,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-13 22:37:07,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-13 22:37:07,655 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:07,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1287059495, now seen corresponding path program 116 times [2021-10-13 22:37:07,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:07,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043999626] [2021-10-13 22:37:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:07,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:07,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:07,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043999626] [2021-10-13 22:37:07,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043999626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:07,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789875099] [2021-10-13 22:37:07,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:07,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:07,842 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:07,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-13 22:37:11,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:11,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:11,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:11,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:11,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789875099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:11,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:11,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:11,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400508651] [2021-10-13 22:37:11,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:11,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:11,656 INFO L87 Difference]: Start difference. First operand 3513 states and 9853 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:11,919 INFO L93 Difference]: Finished difference Result 5061 states and 13077 transitions. [2021-10-13 22:37:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:37:11,919 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:11,925 INFO L225 Difference]: With dead ends: 5061 [2021-10-13 22:37:11,925 INFO L226 Difference]: Without dead ends: 4791 [2021-10-13 22:37:11,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 283.6ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:37:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2021-10-13 22:37:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 3528. [2021-10-13 22:37:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:11,961 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:11,962 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:11,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:11,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:11,965 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:11,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-13 22:37:12,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-13 22:37:12,165 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash -497853161, now seen corresponding path program 117 times [2021-10-13 22:37:12,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:12,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89277368] [2021-10-13 22:37:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:12,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:12,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:12,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89277368] [2021-10-13 22:37:12,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89277368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:12,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084988954] [2021-10-13 22:37:12,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:12,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:12,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:12,400 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-13 22:37:15,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:37:15,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:15,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:16,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084988954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:16,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:16,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:16,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933549023] [2021-10-13 22:37:16,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:16,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:16,265 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:16,566 INFO L93 Difference]: Finished difference Result 4946 states and 12847 transitions. [2021-10-13 22:37:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:37:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:16,571 INFO L225 Difference]: With dead ends: 4946 [2021-10-13 22:37:16,571 INFO L226 Difference]: Without dead ends: 4676 [2021-10-13 22:37:16,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 342.1ms TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:37:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2021-10-13 22:37:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 3528. [2021-10-13 22:37:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:16,609 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:16,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:16,612 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:16,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:16,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-13 22:37:16,813 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1084378149, now seen corresponding path program 118 times [2021-10-13 22:37:16,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:16,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309001936] [2021-10-13 22:37:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:16,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:17,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:17,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309001936] [2021-10-13 22:37:17,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309001936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:17,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548216865] [2021-10-13 22:37:17,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:17,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:17,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:17,031 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:17,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-13 22:37:20,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:20,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:20,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:20,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:20,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548216865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:20,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:20,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:20,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165657541] [2021-10-13 22:37:20,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:20,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:20,879 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:21,160 INFO L93 Difference]: Finished difference Result 4921 states and 12797 transitions. [2021-10-13 22:37:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:37:21,160 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:21,166 INFO L225 Difference]: With dead ends: 4921 [2021-10-13 22:37:21,166 INFO L226 Difference]: Without dead ends: 4651 [2021-10-13 22:37:21,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 300.6ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:37:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2021-10-13 22:37:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 3528. [2021-10-13 22:37:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:21,215 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:21,215 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:21,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:21,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:21,218 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:21,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:21,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:21,423 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash 77274389, now seen corresponding path program 119 times [2021-10-13 22:37:21,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:21,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169690325] [2021-10-13 22:37:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:21,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:21,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:21,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169690325] [2021-10-13 22:37:21,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169690325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:21,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395553387] [2021-10-13 22:37:21,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:21,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:21,642 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:21,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-13 22:37:25,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:37:25,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:25,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:25,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:25,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395553387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:25,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:25,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:25,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206909861] [2021-10-13 22:37:25,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:25,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:25,632 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:25,996 INFO L93 Difference]: Finished difference Result 4871 states and 12697 transitions. [2021-10-13 22:37:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:37:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:26,002 INFO L225 Difference]: With dead ends: 4871 [2021-10-13 22:37:26,002 INFO L226 Difference]: Without dead ends: 4601 [2021-10-13 22:37:26,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 383.9ms TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:37:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-10-13 22:37:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3528. [2021-10-13 22:37:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:26,041 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:26,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:26,041 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:26,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:26,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:26,044 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:26,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-10-13 22:37:26,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:26,246 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:26,246 INFO L82 PathProgramCache]: Analyzing trace with hash 212395427, now seen corresponding path program 120 times [2021-10-13 22:37:26,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:26,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791254002] [2021-10-13 22:37:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:26,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:26,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:26,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791254002] [2021-10-13 22:37:26,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791254002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:26,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799229710] [2021-10-13 22:37:26,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:26,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:26,447 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:26,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-13 22:37:30,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:37:30,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:30,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:30,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:30,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799229710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:30,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:30,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:30,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107563515] [2021-10-13 22:37:30,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:30,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:30,385 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:30,719 INFO L93 Difference]: Finished difference Result 4821 states and 12597 transitions. [2021-10-13 22:37:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:37:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:30,726 INFO L225 Difference]: With dead ends: 4821 [2021-10-13 22:37:30,726 INFO L226 Difference]: Without dead ends: 4551 [2021-10-13 22:37:30,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 329.3ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:37:30,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-10-13 22:37:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3528. [2021-10-13 22:37:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:30,764 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:30,764 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:30,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:30,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:30,768 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:30,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:30,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:30,968 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:30,968 INFO L82 PathProgramCache]: Analyzing trace with hash 123019923, now seen corresponding path program 121 times [2021-10-13 22:37:30,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:30,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212915337] [2021-10-13 22:37:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:30,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:31,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:31,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212915337] [2021-10-13 22:37:31,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212915337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:31,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417056639] [2021-10-13 22:37:31,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:31,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:31,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:31,147 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:31,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-13 22:37:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:34,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:34,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:35,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417056639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:35,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:35,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:35,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39634345] [2021-10-13 22:37:35,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:35,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:35,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:35,166 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:35,555 INFO L93 Difference]: Finished difference Result 4771 states and 12497 transitions. [2021-10-13 22:37:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:37:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:35,560 INFO L225 Difference]: With dead ends: 4771 [2021-10-13 22:37:35,560 INFO L226 Difference]: Without dead ends: 4501 [2021-10-13 22:37:35,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 398.9ms TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:37:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-10-13 22:37:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 3528. [2021-10-13 22:37:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:35,597 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:35,598 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:35,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:35,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:35,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:35,601 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:35,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-10-13 22:37:35,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-13 22:37:35,801 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:35,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:35,802 INFO L82 PathProgramCache]: Analyzing trace with hash -409230175, now seen corresponding path program 122 times [2021-10-13 22:37:35,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:35,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040302514] [2021-10-13 22:37:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:35,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:36,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:36,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040302514] [2021-10-13 22:37:36,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040302514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:36,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200324509] [2021-10-13 22:37:36,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:36,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:36,001 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:36,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-13 22:37:39,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:39,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:39,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:40,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200324509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:40,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:40,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:40,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505557193] [2021-10-13 22:37:40,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:40,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:40,069 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:40,411 INFO L93 Difference]: Finished difference Result 4721 states and 12397 transitions. [2021-10-13 22:37:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:37:40,411 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:40,417 INFO L225 Difference]: With dead ends: 4721 [2021-10-13 22:37:40,417 INFO L226 Difference]: Without dead ends: 4451 [2021-10-13 22:37:40,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 335.7ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:37:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-10-13 22:37:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3528. [2021-10-13 22:37:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:40,453 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:40,453 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:40,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:40,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:40,456 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:40,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:40,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:40,658 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:40,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:40,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1376931217, now seen corresponding path program 123 times [2021-10-13 22:37:40,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:40,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505513240] [2021-10-13 22:37:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:40,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:40,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:40,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505513240] [2021-10-13 22:37:40,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505513240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:40,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388972168] [2021-10-13 22:37:40,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:40,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:40,830 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:40,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-13 22:37:44,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:37:44,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:44,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 22:37:44,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:44,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388972168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:44,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:44,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:44,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635904663] [2021-10-13 22:37:44,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:44,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:44,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:44,909 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:45,321 INFO L93 Difference]: Finished difference Result 4671 states and 12297 transitions. [2021-10-13 22:37:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:37:45,322 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:45,327 INFO L225 Difference]: With dead ends: 4671 [2021-10-13 22:37:45,328 INFO L226 Difference]: Without dead ends: 4401 [2021-10-13 22:37:45,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 401.4ms TimeCoverageRelationStatistics Valid=528, Invalid=1824, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:37:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-10-13 22:37:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3528. [2021-10-13 22:37:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:45,369 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:45,369 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:45,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:45,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:45,373 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:45,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2021-10-13 22:37:45,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:45,574 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1306749215, now seen corresponding path program 124 times [2021-10-13 22:37:45,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:45,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461516757] [2021-10-13 22:37:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:45,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:45,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:45,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461516757] [2021-10-13 22:37:45,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461516757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:45,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320127410] [2021-10-13 22:37:45,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:45,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:45,770 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:45,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-13 22:37:49,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:49,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:49,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320127410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:49,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:49,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:49,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132784457] [2021-10-13 22:37:49,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:49,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:49,822 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:50,199 INFO L93 Difference]: Finished difference Result 4621 states and 12197 transitions. [2021-10-13 22:37:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:37:50,199 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:50,205 INFO L225 Difference]: With dead ends: 4621 [2021-10-13 22:37:50,205 INFO L226 Difference]: Without dead ends: 4351 [2021-10-13 22:37:50,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 351.3ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:37:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-10-13 22:37:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3528. [2021-10-13 22:37:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:50,260 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:50,260 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:50,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:50,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:50,263 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:50,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:50,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:50,463 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:50,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:50,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2114224625, now seen corresponding path program 125 times [2021-10-13 22:37:50,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:50,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763895893] [2021-10-13 22:37:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:50,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:50,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:50,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763895893] [2021-10-13 22:37:50,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763895893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:50,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729577918] [2021-10-13 22:37:50,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:50,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:50,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:50,681 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:50,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-13 22:37:54,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:37:54,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:54,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:54,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729577918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:54,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:54,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:54,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125144107] [2021-10-13 22:37:54,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:54,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:54,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:54,776 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:55,262 INFO L93 Difference]: Finished difference Result 4571 states and 12097 transitions. [2021-10-13 22:37:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:37:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:37:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:55,267 INFO L225 Difference]: With dead ends: 4571 [2021-10-13 22:37:55,267 INFO L226 Difference]: Without dead ends: 4301 [2021-10-13 22:37:55,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 474.4ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:37:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2021-10-13 22:37:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 3528. [2021-10-13 22:37:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:37:55,302 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:37:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:55,303 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:37:55,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:37:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:55,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:55,306 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:37:55,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:55,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-13 22:37:55,506 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1618930915, now seen corresponding path program 126 times [2021-10-13 22:37:55,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:55,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167186319] [2021-10-13 22:37:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:55,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:55,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:55,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167186319] [2021-10-13 22:37:55,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167186319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:55,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662603236] [2021-10-13 22:37:55,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:55,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:55,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:55,707 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:37:55,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-13 22:37:59,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:37:59,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:59,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 22:37:59,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:59,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662603236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:59,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:59,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:59,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644773890] [2021-10-13 22:37:59,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:59,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:59,896 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:00,289 INFO L93 Difference]: Finished difference Result 4521 states and 11997 transitions. [2021-10-13 22:38:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:38:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:38:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:00,294 INFO L225 Difference]: With dead ends: 4521 [2021-10-13 22:38:00,294 INFO L226 Difference]: Without dead ends: 4251 [2021-10-13 22:38:00,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 370.5ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:38:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-10-13 22:38:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3528. [2021-10-13 22:38:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:38:00,364 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:38:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:00,364 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:38:00,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:38:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:00,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:00,367 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:00,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2021-10-13 22:38:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-13 22:38:00,567 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash 131175437, now seen corresponding path program 127 times [2021-10-13 22:38:00,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:00,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33124301] [2021-10-13 22:38:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:00,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:00,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:00,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33124301] [2021-10-13 22:38:00,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33124301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:00,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228545006] [2021-10-13 22:38:00,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:00,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:00,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:00,727 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:00,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-13 22:38:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:04,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:04,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228545006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:04,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:04,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:04,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217935658] [2021-10-13 22:38:04,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:04,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:04,914 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:05,545 INFO L93 Difference]: Finished difference Result 4471 states and 11897 transitions. [2021-10-13 22:38:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:38:05,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:38:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:05,556 INFO L225 Difference]: With dead ends: 4471 [2021-10-13 22:38:05,556 INFO L226 Difference]: Without dead ends: 4201 [2021-10-13 22:38:05,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 568.8ms TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:38:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-10-13 22:38:05,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3528. [2021-10-13 22:38:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:38:05,592 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:38:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:05,592 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:38:05,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:38:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:05,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:05,595 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:05,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:05,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-13 22:38:05,810 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:05,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1041072795, now seen corresponding path program 128 times [2021-10-13 22:38:05,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:05,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66827386] [2021-10-13 22:38:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:05,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:05,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:05,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66827386] [2021-10-13 22:38:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66827386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:05,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432824466] [2021-10-13 22:38:05,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:05,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:05,962 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:05,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-13 22:38:09,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:09,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:09,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:09,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:10,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432824466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:10,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:10,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:10,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915587020] [2021-10-13 22:38:10,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:10,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:10,157 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:10,578 INFO L93 Difference]: Finished difference Result 4421 states and 11797 transitions. [2021-10-13 22:38:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:38:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:38:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:10,583 INFO L225 Difference]: With dead ends: 4421 [2021-10-13 22:38:10,584 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:38:10,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 390.5ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:38:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:38:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3528. [2021-10-13 22:38:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8020981003685854) internal successors, (9883), 3527 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9883 transitions. [2021-10-13 22:38:10,645 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9883 transitions. Word has length 110 [2021-10-13 22:38:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:10,645 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9883 transitions. [2021-10-13 22:38:10,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9883 transitions. [2021-10-13 22:38:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:10,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:10,648 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:10,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:10,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-13 22:38:10,849 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:10,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1173188491, now seen corresponding path program 129 times [2021-10-13 22:38:10,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:10,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542782798] [2021-10-13 22:38:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:10,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:11,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:11,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542782798] [2021-10-13 22:38:11,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542782798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:11,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747281270] [2021-10-13 22:38:11,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:11,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:11,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:11,005 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:11,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-10-13 22:38:14,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:38:14,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:14,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:38:14,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:15,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747281270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:15,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:15,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:15,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622680942] [2021-10-13 22:38:15,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:15,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:15,223 INFO L87 Difference]: Start difference. First operand 3528 states and 9883 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:15,767 INFO L93 Difference]: Finished difference Result 4431 states and 11847 transitions. [2021-10-13 22:38:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:38:15,767 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:38:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:15,772 INFO L225 Difference]: With dead ends: 4431 [2021-10-13 22:38:15,772 INFO L226 Difference]: Without dead ends: 4161 [2021-10-13 22:38:15,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 475.4ms TimeCoverageRelationStatistics Valid=714, Invalid=2256, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:38:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2021-10-13 22:38:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 3528. [2021-10-13 22:38:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8035157357527645) internal successors, (9888), 3527 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9888 transitions. [2021-10-13 22:38:15,805 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9888 transitions. Word has length 110 [2021-10-13 22:38:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:15,805 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9888 transitions. [2021-10-13 22:38:15,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9888 transitions. [2021-10-13 22:38:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:15,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:15,808 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:15,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2021-10-13 22:38:16,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-10-13 22:38:16,009 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:16,009 INFO L82 PathProgramCache]: Analyzing trace with hash 716806041, now seen corresponding path program 130 times [2021-10-13 22:38:16,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:16,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727856374] [2021-10-13 22:38:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:16,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:16,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:16,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727856374] [2021-10-13 22:38:16,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727856374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:16,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350122733] [2021-10-13 22:38:16,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:16,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:16,201 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:16,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-10-13 22:38:20,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:20,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:20,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:20,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:20,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350122733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:20,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:20,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:20,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579274079] [2021-10-13 22:38:20,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:20,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:20,478 INFO L87 Difference]: Start difference. First operand 3528 states and 9888 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:20,928 INFO L93 Difference]: Finished difference Result 5198 states and 14021 transitions. [2021-10-13 22:38:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:38:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:38:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:20,933 INFO L225 Difference]: With dead ends: 5198 [2021-10-13 22:38:20,933 INFO L226 Difference]: Without dead ends: 4928 [2021-10-13 22:38:20,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 450.9ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:38:20,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-10-13 22:38:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 3708. [2021-10-13 22:38:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3707 states have (on average 2.8181818181818183) internal successors, (10447), 3707 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 10447 transitions. [2021-10-13 22:38:20,973 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 10447 transitions. Word has length 110 [2021-10-13 22:38:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:20,973 INFO L470 AbstractCegarLoop]: Abstraction has 3708 states and 10447 transitions. [2021-10-13 22:38:20,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 10447 transitions. [2021-10-13 22:38:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:20,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:20,976 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:21,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2021-10-13 22:38:21,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:21,176 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash 782048331, now seen corresponding path program 131 times [2021-10-13 22:38:21,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:21,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517525094] [2021-10-13 22:38:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:21,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:21,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:21,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517525094] [2021-10-13 22:38:21,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517525094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:21,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680478685] [2021-10-13 22:38:21,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:21,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:21,332 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:21,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2021-10-13 22:38:25,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:38:25,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:25,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:25,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:25,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680478685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:25,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:25,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:25,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994661904] [2021-10-13 22:38:25,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:25,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:25,629 INFO L87 Difference]: Start difference. First operand 3708 states and 10447 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:26,248 INFO L93 Difference]: Finished difference Result 5021 states and 13521 transitions. [2021-10-13 22:38:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:38:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 22:38:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:26,254 INFO L225 Difference]: With dead ends: 5021 [2021-10-13 22:38:26,254 INFO L226 Difference]: Without dead ends: 4446 [2021-10-13 22:38:26,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 581.9ms TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 22:38:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-10-13 22:38:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2603. [2021-10-13 22:38:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.735588009223674) internal successors, (7118), 2602 states have internal predecessors, (7118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7118 transitions. [2021-10-13 22:38:26,283 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7118 transitions. Word has length 110 [2021-10-13 22:38:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:26,284 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7118 transitions. [2021-10-13 22:38:26,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7118 transitions. [2021-10-13 22:38:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:26,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:26,286 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:26,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2021-10-13 22:38:26,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-10-13 22:38:26,486 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash -172218370, now seen corresponding path program 132 times [2021-10-13 22:38:26,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:26,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672770671] [2021-10-13 22:38:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:26,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:26,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:26,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672770671] [2021-10-13 22:38:26,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672770671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:26,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607912223] [2021-10-13 22:38:26,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:26,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:26,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:26,685 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:26,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2021-10-13 22:38:30,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:38:30,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:30,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:30,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:31,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607912223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:31,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:31,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:31,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926236036] [2021-10-13 22:38:31,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:31,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:31,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:31,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:31,185 INFO L87 Difference]: Start difference. First operand 2603 states and 7118 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:31,469 INFO L93 Difference]: Finished difference Result 3821 states and 9757 transitions. [2021-10-13 22:38:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:38:31,470 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:31,474 INFO L225 Difference]: With dead ends: 3821 [2021-10-13 22:38:31,474 INFO L226 Difference]: Without dead ends: 3551 [2021-10-13 22:38:31,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 322.0ms TimeCoverageRelationStatistics Valid=508, Invalid=1472, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:38:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-10-13 22:38:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 2678. [2021-10-13 22:38:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.742995890922675) internal successors, (7343), 2677 states have internal predecessors, (7343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7343 transitions. [2021-10-13 22:38:31,500 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7343 transitions. Word has length 115 [2021-10-13 22:38:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:31,501 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7343 transitions. [2021-10-13 22:38:31,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7343 transitions. [2021-10-13 22:38:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:31,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:31,503 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:31,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2021-10-13 22:38:31,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:31,703 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:31,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:31,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1957131026, now seen corresponding path program 133 times [2021-10-13 22:38:31,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:31,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530715792] [2021-10-13 22:38:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:31,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:31,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:31,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530715792] [2021-10-13 22:38:31,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530715792] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:31,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122937922] [2021-10-13 22:38:31,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:31,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:31,944 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:31,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2021-10-13 22:38:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:36,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:36,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122937922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:36,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:36,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:38:36,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566302153] [2021-10-13 22:38:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:38:36,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:38:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:38:36,419 INFO L87 Difference]: Start difference. First operand 2678 states and 7343 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:36,755 INFO L93 Difference]: Finished difference Result 4241 states and 10672 transitions. [2021-10-13 22:38:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:38:36,756 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:36,760 INFO L225 Difference]: With dead ends: 4241 [2021-10-13 22:38:36,760 INFO L226 Difference]: Without dead ends: 3971 [2021-10-13 22:38:36,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 381.3ms TimeCoverageRelationStatistics Valid=560, Invalid=1696, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:38:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2021-10-13 22:38:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2753. [2021-10-13 22:38:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.75) internal successors, (7568), 2752 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7568 transitions. [2021-10-13 22:38:36,790 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7568 transitions. Word has length 115 [2021-10-13 22:38:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:36,790 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 7568 transitions. [2021-10-13 22:38:36,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7568 transitions. [2021-10-13 22:38:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:36,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:36,792 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:36,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2021-10-13 22:38:36,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:36,992 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:36,993 INFO L82 PathProgramCache]: Analyzing trace with hash -374899716, now seen corresponding path program 134 times [2021-10-13 22:38:36,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:36,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629903478] [2021-10-13 22:38:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:36,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:37,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:37,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629903478] [2021-10-13 22:38:37,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629903478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:37,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318144921] [2021-10-13 22:38:37,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:37,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:37,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:37,224 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:37,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2021-10-13 22:38:41,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:41,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:41,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:41,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318144921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:41,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:41,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:41,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109677815] [2021-10-13 22:38:41,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:41,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:41,701 INFO L87 Difference]: Start difference. First operand 2753 states and 7568 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:42,019 INFO L93 Difference]: Finished difference Result 4271 states and 10807 transitions. [2021-10-13 22:38:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:38:42,019 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:42,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:42,023 INFO L225 Difference]: With dead ends: 4271 [2021-10-13 22:38:42,023 INFO L226 Difference]: Without dead ends: 4001 [2021-10-13 22:38:42,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 338.7ms TimeCoverageRelationStatistics Valid=560, Invalid=1696, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:38:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-10-13 22:38:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2828. [2021-10-13 22:38:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.75663247258578) internal successors, (7793), 2827 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7793 transitions. [2021-10-13 22:38:42,071 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7793 transitions. Word has length 115 [2021-10-13 22:38:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:42,072 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7793 transitions. [2021-10-13 22:38:42,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:42,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7793 transitions. [2021-10-13 22:38:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:42,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:42,074 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:42,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:42,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:42,299 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:42,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1382003476, now seen corresponding path program 135 times [2021-10-13 22:38:42,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:42,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320987993] [2021-10-13 22:38:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:42,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:42,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:42,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320987993] [2021-10-13 22:38:42,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320987993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:42,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608806786] [2021-10-13 22:38:42,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:42,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:42,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:42,498 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:42,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2021-10-13 22:38:46,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:38:46,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:46,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 22:38:46,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:47,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608806786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:47,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:47,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:38:47,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694579332] [2021-10-13 22:38:47,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:38:47,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:38:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:38:47,058 INFO L87 Difference]: Start difference. First operand 2828 states and 7793 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:47,448 INFO L93 Difference]: Finished difference Result 4296 states and 10932 transitions. [2021-10-13 22:38:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:38:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:47,453 INFO L225 Difference]: With dead ends: 4296 [2021-10-13 22:38:47,453 INFO L226 Difference]: Without dead ends: 4026 [2021-10-13 22:38:47,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 399.9ms TimeCoverageRelationStatistics Valid=577, Invalid=1873, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:38:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-10-13 22:38:47,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2903. [2021-10-13 22:38:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7629221226740177) internal successors, (8018), 2902 states have internal predecessors, (8018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 8018 transitions. [2021-10-13 22:38:47,484 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 8018 transitions. Word has length 115 [2021-10-13 22:38:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:47,485 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 8018 transitions. [2021-10-13 22:38:47,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 8018 transitions. [2021-10-13 22:38:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:47,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:47,487 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:47,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:47,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:47,687 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:47,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:47,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1246882438, now seen corresponding path program 136 times [2021-10-13 22:38:47,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:47,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809921041] [2021-10-13 22:38:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:47,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:47,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:47,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809921041] [2021-10-13 22:38:47,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809921041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:47,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113918718] [2021-10-13 22:38:47,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:47,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:47,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:47,911 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:47,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2021-10-13 22:38:52,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:52,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:52,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113918718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:52,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:52,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:38:52,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316297868] [2021-10-13 22:38:52,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:52,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:52,526 INFO L87 Difference]: Start difference. First operand 2903 states and 8018 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:52,886 INFO L93 Difference]: Finished difference Result 4321 states and 11057 transitions. [2021-10-13 22:38:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:38:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:52,892 INFO L225 Difference]: With dead ends: 4321 [2021-10-13 22:38:52,892 INFO L226 Difference]: Without dead ends: 4051 [2021-10-13 22:38:52,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 372.9ms TimeCoverageRelationStatistics Valid=597, Invalid=1853, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:38:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-10-13 22:38:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2978. [2021-10-13 22:38:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7688948605979173) internal successors, (8243), 2977 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8243 transitions. [2021-10-13 22:38:52,929 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8243 transitions. Word has length 115 [2021-10-13 22:38:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:52,929 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 8243 transitions. [2021-10-13 22:38:52,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8243 transitions. [2021-10-13 22:38:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:52,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:52,932 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:52,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:53,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-10-13 22:38:53,132 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:53,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1336257942, now seen corresponding path program 137 times [2021-10-13 22:38:53,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:53,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204897686] [2021-10-13 22:38:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:53,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:53,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:53,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204897686] [2021-10-13 22:38:53,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204897686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:53,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532355218] [2021-10-13 22:38:53,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:53,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:53,324 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:53,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2021-10-13 22:38:57,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:38:57,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:57,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:38:57,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:57,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532355218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:57,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:57,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:38:57,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871574845] [2021-10-13 22:38:57,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:38:57,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:38:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:38:57,994 INFO L87 Difference]: Start difference. First operand 2978 states and 8243 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:58,453 INFO L93 Difference]: Finished difference Result 4346 states and 11182 transitions. [2021-10-13 22:38:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:38:58,453 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:38:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:58,457 INFO L225 Difference]: With dead ends: 4346 [2021-10-13 22:38:58,457 INFO L226 Difference]: Without dead ends: 4076 [2021-10-13 22:38:58,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 433.7ms TimeCoverageRelationStatistics Valid=622, Invalid=2030, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:38:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-13 22:38:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3053. [2021-10-13 22:38:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.7745740498034075) internal successors, (8468), 3052 states have internal predecessors, (8468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8468 transitions. [2021-10-13 22:38:58,491 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8468 transitions. Word has length 115 [2021-10-13 22:38:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:58,491 INFO L470 AbstractCegarLoop]: Abstraction has 3053 states and 8468 transitions. [2021-10-13 22:38:58,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8468 transitions. [2021-10-13 22:38:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:38:58,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:58,493 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:38:58,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2021-10-13 22:38:58,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-10-13 22:38:58,695 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:58,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:58,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1868508040, now seen corresponding path program 138 times [2021-10-13 22:38:58,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:58,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339765168] [2021-10-13 22:38:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:58,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:58,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:58,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339765168] [2021-10-13 22:38:58,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339765168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:58,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892564192] [2021-10-13 22:38:58,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:58,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:58,877 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:38:58,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2021-10-13 22:39:03,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:39:03,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:03,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:03,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:03,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892564192] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:03,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:03,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:03,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148682178] [2021-10-13 22:39:03,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:03,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:03,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:03,679 INFO L87 Difference]: Start difference. First operand 3053 states and 8468 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:04,062 INFO L93 Difference]: Finished difference Result 4371 states and 11307 transitions. [2021-10-13 22:39:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:39:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:04,067 INFO L225 Difference]: With dead ends: 4371 [2021-10-13 22:39:04,067 INFO L226 Difference]: Without dead ends: 4101 [2021-10-13 22:39:04,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 379.0ms TimeCoverageRelationStatistics Valid=650, Invalid=2002, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:39:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-10-13 22:39:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3128. [2021-10-13 22:39:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7799808122801406) internal successors, (8693), 3127 states have internal predecessors, (8693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8693 transitions. [2021-10-13 22:39:04,114 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8693 transitions. Word has length 115 [2021-10-13 22:39:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:04,115 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 8693 transitions. [2021-10-13 22:39:04,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8693 transitions. [2021-10-13 22:39:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:04,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:04,117 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:04,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:04,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-10-13 22:39:04,318 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash -82346648, now seen corresponding path program 139 times [2021-10-13 22:39:04,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:04,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500467236] [2021-10-13 22:39:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:04,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:04,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:04,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500467236] [2021-10-13 22:39:04,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500467236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:04,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022800783] [2021-10-13 22:39:04,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:04,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:04,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:04,528 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:04,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2021-10-13 22:39:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:08,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:08,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:09,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022800783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:09,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:09,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:39:09,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912873809] [2021-10-13 22:39:09,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:09,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:09,246 INFO L87 Difference]: Start difference. First operand 3128 states and 8693 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:09,748 INFO L93 Difference]: Finished difference Result 4396 states and 11432 transitions. [2021-10-13 22:39:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:39:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:09,752 INFO L225 Difference]: With dead ends: 4396 [2021-10-13 22:39:09,753 INFO L226 Difference]: Without dead ends: 4126 [2021-10-13 22:39:09,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 495.6ms TimeCoverageRelationStatistics Valid=677, Invalid=2185, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:39:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-10-13 22:39:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3203. [2021-10-13 22:39:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7851342910680823) internal successors, (8918), 3202 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8918 transitions. [2021-10-13 22:39:09,788 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8918 transitions. Word has length 115 [2021-10-13 22:39:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:09,788 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 8918 transitions. [2021-10-13 22:39:09,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8918 transitions. [2021-10-13 22:39:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:09,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:09,791 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:09,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:09,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-10-13 22:39:09,991 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:09,992 INFO L82 PathProgramCache]: Analyzing trace with hash -152528650, now seen corresponding path program 140 times [2021-10-13 22:39:09,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:09,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066341473] [2021-10-13 22:39:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:09,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:10,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:10,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066341473] [2021-10-13 22:39:10,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066341473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:10,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802543698] [2021-10-13 22:39:10,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:10,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:10,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:10,180 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:10,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2021-10-13 22:39:14,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:14,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:14,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:14,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:14,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802543698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:14,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:14,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:14,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706662734] [2021-10-13 22:39:14,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:14,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:14,904 INFO L87 Difference]: Start difference. First operand 3203 states and 8918 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:15,307 INFO L93 Difference]: Finished difference Result 4421 states and 11557 transitions. [2021-10-13 22:39:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:39:15,307 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:15,312 INFO L225 Difference]: With dead ends: 4421 [2021-10-13 22:39:15,312 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:39:15,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 402.5ms TimeCoverageRelationStatistics Valid=719, Invalid=2143, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:39:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:39:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3278. [2021-10-13 22:39:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.790051876716509) internal successors, (9143), 3277 states have internal predecessors, (9143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9143 transitions. [2021-10-13 22:39:15,349 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9143 transitions. Word has length 115 [2021-10-13 22:39:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:15,349 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 9143 transitions. [2021-10-13 22:39:15,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9143 transitions. [2021-10-13 22:39:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:15,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:15,352 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:15,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2021-10-13 22:39:15,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:15,558 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash 721464806, now seen corresponding path program 141 times [2021-10-13 22:39:15,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:15,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332545203] [2021-10-13 22:39:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:15,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:15,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:15,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332545203] [2021-10-13 22:39:15,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332545203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:15,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75772081] [2021-10-13 22:39:15,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:15,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:15,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:15,781 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:15,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2021-10-13 22:39:20,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:39:20,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:20,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 22:39:20,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:20,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75772081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:20,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:20,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:39:20,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139514685] [2021-10-13 22:39:20,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:20,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:20,611 INFO L87 Difference]: Start difference. First operand 3278 states and 9143 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:21,107 INFO L93 Difference]: Finished difference Result 4446 states and 11682 transitions. [2021-10-13 22:39:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:39:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:21,111 INFO L225 Difference]: With dead ends: 4446 [2021-10-13 22:39:21,112 INFO L226 Difference]: Without dead ends: 4176 [2021-10-13 22:39:21,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 474.1ms TimeCoverageRelationStatistics Valid=715, Invalid=2365, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:39:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-10-13 22:39:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3353. [2021-10-13 22:39:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7947494033412887) internal successors, (9368), 3352 states have internal predecessors, (9368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9368 transitions. [2021-10-13 22:39:21,149 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9368 transitions. Word has length 115 [2021-10-13 22:39:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:21,149 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 9368 transitions. [2021-10-13 22:39:21,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9368 transitions. [2021-10-13 22:39:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:21,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:21,151 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:21,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2021-10-13 22:39:21,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-10-13 22:39:21,352 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1216758516, now seen corresponding path program 142 times [2021-10-13 22:39:21,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:21,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916714385] [2021-10-13 22:39:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:21,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:21,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:21,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916714385] [2021-10-13 22:39:21,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916714385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:21,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384516576] [2021-10-13 22:39:21,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:21,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:21,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:21,550 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:21,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2021-10-13 22:39:26,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:26,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:26,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:26,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:26,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384516576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:26,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:26,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:26,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743668353] [2021-10-13 22:39:26,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:26,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:26,366 INFO L87 Difference]: Start difference. First operand 3353 states and 9368 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:26,908 INFO L93 Difference]: Finished difference Result 4471 states and 11807 transitions. [2021-10-13 22:39:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:39:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:26,914 INFO L225 Difference]: With dead ends: 4471 [2021-10-13 22:39:26,914 INFO L226 Difference]: Without dead ends: 4201 [2021-10-13 22:39:26,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 502.7ms TimeCoverageRelationStatistics Valid=804, Invalid=2276, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:39:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-10-13 22:39:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3428. [2021-10-13 22:39:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7992413189378467) internal successors, (9593), 3427 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9593 transitions. [2021-10-13 22:39:26,952 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9593 transitions. Word has length 115 [2021-10-13 22:39:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:26,952 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 9593 transitions. [2021-10-13 22:39:26,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9593 transitions. [2021-10-13 22:39:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:26,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:26,955 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:26,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2021-10-13 22:39:27,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:27,155 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1328102428, now seen corresponding path program 143 times [2021-10-13 22:39:27,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:27,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490430535] [2021-10-13 22:39:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:27,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:27,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:27,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490430535] [2021-10-13 22:39:27,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490430535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:27,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208449253] [2021-10-13 22:39:27,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:39:27,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:27,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:27,373 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:27,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2021-10-13 22:39:31,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:39:31,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:31,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:32,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208449253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:32,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:32,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:39:32,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361394596] [2021-10-13 22:39:32,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:32,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:32,109 INFO L87 Difference]: Start difference. First operand 3428 states and 9593 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:32,685 INFO L93 Difference]: Finished difference Result 4496 states and 11932 transitions. [2021-10-13 22:39:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:39:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:32,690 INFO L225 Difference]: With dead ends: 4496 [2021-10-13 22:39:32,690 INFO L226 Difference]: Without dead ends: 4226 [2021-10-13 22:39:32,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 543.1ms TimeCoverageRelationStatistics Valid=835, Invalid=2471, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:39:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-10-13 22:39:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3503. [2021-10-13 22:39:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.803540833809252) internal successors, (9818), 3502 states have internal predecessors, (9818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9818 transitions. [2021-10-13 22:39:32,727 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9818 transitions. Word has length 115 [2021-10-13 22:39:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:32,727 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 9818 transitions. [2021-10-13 22:39:32,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9818 transitions. [2021-10-13 22:39:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:32,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:32,730 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:32,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2021-10-13 22:39:32,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:32,931 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash -418205070, now seen corresponding path program 144 times [2021-10-13 22:39:32,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:32,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400112040] [2021-10-13 22:39:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:32,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:33,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:33,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400112040] [2021-10-13 22:39:33,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400112040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:33,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911603319] [2021-10-13 22:39:33,095 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:33,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:33,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:33,095 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:33,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2021-10-13 22:39:37,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:39:37,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:37,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 22:39:37,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:37,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911603319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:37,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:37,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:37,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875882708] [2021-10-13 22:39:37,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:37,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:37,919 INFO L87 Difference]: Start difference. First operand 3503 states and 9818 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:38,405 INFO L93 Difference]: Finished difference Result 4566 states and 12177 transitions. [2021-10-13 22:39:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:39:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:38,411 INFO L225 Difference]: With dead ends: 4566 [2021-10-13 22:39:38,411 INFO L226 Difference]: Without dead ends: 4296 [2021-10-13 22:39:38,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 441.2ms TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:39:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-10-13 22:39:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3578. [2021-10-13 22:39:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.8118535085266982) internal successors, (10058), 3577 states have internal predecessors, (10058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 10058 transitions. [2021-10-13 22:39:38,452 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 10058 transitions. Word has length 115 [2021-10-13 22:39:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:38,452 INFO L470 AbstractCegarLoop]: Abstraction has 3578 states and 10058 transitions. [2021-10-13 22:39:38,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 10058 transitions. [2021-10-13 22:39:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:38,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:38,455 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:38,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:38,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:38,655 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash -286089374, now seen corresponding path program 145 times [2021-10-13 22:39:38,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:38,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177598403] [2021-10-13 22:39:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:38,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:38,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:38,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177598403] [2021-10-13 22:39:38,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177598403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:38,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941931102] [2021-10-13 22:39:38,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:38,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:38,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:38,889 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:38,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2021-10-13 22:39:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:43,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:43,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:43,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941931102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:43,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:43,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-10-13 22:39:43,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416037325] [2021-10-13 22:39:43,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:39:43,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:39:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:39:43,780 INFO L87 Difference]: Start difference. First operand 3578 states and 10058 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:44,399 INFO L93 Difference]: Finished difference Result 5144 states and 13803 transitions. [2021-10-13 22:39:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:39:44,400 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:44,406 INFO L225 Difference]: With dead ends: 5144 [2021-10-13 22:39:44,406 INFO L226 Difference]: Without dead ends: 4521 [2021-10-13 22:39:44,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 576.0ms TimeCoverageRelationStatistics Valid=961, Invalid=2821, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 22:39:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-10-13 22:39:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3653. [2021-10-13 22:39:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.8170865279299013) internal successors, (10288), 3652 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10288 transitions. [2021-10-13 22:39:44,473 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10288 transitions. Word has length 115 [2021-10-13 22:39:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:44,473 INFO L470 AbstractCegarLoop]: Abstraction has 3653 states and 10288 transitions. [2021-10-13 22:39:44,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10288 transitions. [2021-10-13 22:39:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:44,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:44,477 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:44,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2021-10-13 22:39:44,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:44,687 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash -742471824, now seen corresponding path program 146 times [2021-10-13 22:39:44,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:44,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194445808] [2021-10-13 22:39:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:44,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:44,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:44,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194445808] [2021-10-13 22:39:44,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194445808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:44,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873704902] [2021-10-13 22:39:44,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:44,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:44,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:44,850 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:44,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2021-10-13 22:39:49,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:49,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:49,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:49,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:49,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873704902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:49,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:49,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:49,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572648886] [2021-10-13 22:39:49,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:49,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:49,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:49,788 INFO L87 Difference]: Start difference. First operand 3653 states and 10288 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:50,282 INFO L93 Difference]: Finished difference Result 5348 states and 14471 transitions. [2021-10-13 22:39:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:39:50,282 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:50,288 INFO L225 Difference]: With dead ends: 5348 [2021-10-13 22:39:50,288 INFO L226 Difference]: Without dead ends: 5078 [2021-10-13 22:39:50,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 469.4ms TimeCoverageRelationStatistics Valid=1023, Invalid=2517, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:39:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2021-10-13 22:39:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 3833. [2021-10-13 22:39:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 2.8306367432150314) internal successors, (10847), 3832 states have internal predecessors, (10847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 10847 transitions. [2021-10-13 22:39:50,343 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 10847 transitions. Word has length 115 [2021-10-13 22:39:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:50,343 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 10847 transitions. [2021-10-13 22:39:50,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 10847 transitions. [2021-10-13 22:39:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:50,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:50,346 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:50,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:50,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2021-10-13 22:39:50,547 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:50,547 INFO L82 PathProgramCache]: Analyzing trace with hash -677229534, now seen corresponding path program 147 times [2021-10-13 22:39:50,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:50,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434957482] [2021-10-13 22:39:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:50,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:50,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:50,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434957482] [2021-10-13 22:39:50,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434957482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:50,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563717250] [2021-10-13 22:39:50,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:50,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:50,733 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:50,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2021-10-13 22:39:55,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:39:55,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:55,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:39:55,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:55,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563717250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:55,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:55,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:55,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874515750] [2021-10-13 22:39:55,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:55,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:55,602 INFO L87 Difference]: Start difference. First operand 3833 states and 10847 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:56,260 INFO L93 Difference]: Finished difference Result 4810 states and 13121 transitions. [2021-10-13 22:39:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:39:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 22:39:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:56,265 INFO L225 Difference]: With dead ends: 4810 [2021-10-13 22:39:56,265 INFO L226 Difference]: Without dead ends: 4321 [2021-10-13 22:39:56,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 580.3ms TimeCoverageRelationStatistics Valid=949, Invalid=2711, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:39:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2021-10-13 22:39:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 3778. [2021-10-13 22:39:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 3777 states have (on average 2.8284352660841936) internal successors, (10683), 3777 states have internal predecessors, (10683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 10683 transitions. [2021-10-13 22:39:56,301 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 10683 transitions. Word has length 115 [2021-10-13 22:39:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:56,301 INFO L470 AbstractCegarLoop]: Abstraction has 3778 states and 10683 transitions. [2021-10-13 22:39:56,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 10683 transitions. [2021-10-13 22:39:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:39:56,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:56,305 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:39:56,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:56,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-10-13 22:39:56,505 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1927187540, now seen corresponding path program 148 times [2021-10-13 22:39:56,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:56,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272633578] [2021-10-13 22:39:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:56,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:56,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:56,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272633578] [2021-10-13 22:39:56,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272633578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:56,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846455246] [2021-10-13 22:39:56,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:56,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:56,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:56,733 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:39:56,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2021-10-13 22:40:01,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:01,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:01,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:40:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:01,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846455246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:01,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:01,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-10-13 22:40:01,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507639956] [2021-10-13 22:40:01,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 22:40:01,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 22:40:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:40:01,919 INFO L87 Difference]: Start difference. First operand 3778 states and 10683 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:02,306 INFO L93 Difference]: Finished difference Result 4868 states and 13183 transitions. [2021-10-13 22:40:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:40:02,306 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:02,311 INFO L225 Difference]: With dead ends: 4868 [2021-10-13 22:40:02,311 INFO L226 Difference]: Without dead ends: 4534 [2021-10-13 22:40:02,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 394.0ms TimeCoverageRelationStatistics Valid=645, Invalid=1805, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:40:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2021-10-13 22:40:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 3863. [2021-10-13 22:40:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 2.810201967892284) internal successors, (10853), 3862 states have internal predecessors, (10853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 10853 transitions. [2021-10-13 22:40:02,351 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 10853 transitions. Word has length 120 [2021-10-13 22:40:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:02,352 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 10853 transitions. [2021-10-13 22:40:02,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 10853 transitions. [2021-10-13 22:40:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:02,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:02,355 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:02,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2021-10-13 22:40:02,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-10-13 22:40:02,556 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash -995481192, now seen corresponding path program 149 times [2021-10-13 22:40:02,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:02,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349750750] [2021-10-13 22:40:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:02,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:02,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:02,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349750750] [2021-10-13 22:40:02,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349750750] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:02,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187840194] [2021-10-13 22:40:02,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:02,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:02,778 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:02,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2021-10-13 22:40:07,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:40:07,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:07,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:07,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:07,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187840194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:07,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:07,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:40:07,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381455879] [2021-10-13 22:40:07,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:07,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:07,930 INFO L87 Difference]: Start difference. First operand 3863 states and 10853 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:08,230 INFO L93 Difference]: Finished difference Result 5561 states and 14377 transitions. [2021-10-13 22:40:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:40:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:08,237 INFO L225 Difference]: With dead ends: 5561 [2021-10-13 22:40:08,237 INFO L226 Difference]: Without dead ends: 5291 [2021-10-13 22:40:08,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 322.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:40:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2021-10-13 22:40:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 3878. [2021-10-13 22:40:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:08,279 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:08,280 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:08,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:08,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:08,283 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:08,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2021-10-13 22:40:08,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-10-13 22:40:08,483 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash -209640824, now seen corresponding path program 150 times [2021-10-13 22:40:08,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:08,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489402540] [2021-10-13 22:40:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:08,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:08,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:08,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489402540] [2021-10-13 22:40:08,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489402540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:08,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311779881] [2021-10-13 22:40:08,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:08,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:08,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:08,756 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:08,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2021-10-13 22:40:13,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:40:13,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:13,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:13,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:13,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311779881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:13,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:13,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:13,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022631437] [2021-10-13 22:40:13,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:13,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:13,991 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:14,348 INFO L93 Difference]: Finished difference Result 5446 states and 14147 transitions. [2021-10-13 22:40:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:40:14,349 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:14,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:14,355 INFO L225 Difference]: With dead ends: 5446 [2021-10-13 22:40:14,356 INFO L226 Difference]: Without dead ends: 5176 [2021-10-13 22:40:14,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 400.6ms TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:40:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-10-13 22:40:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 3878. [2021-10-13 22:40:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:14,398 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:14,398 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:14,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:14,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:14,401 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:14,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2021-10-13 22:40:14,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-10-13 22:40:14,602 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash -273475562, now seen corresponding path program 151 times [2021-10-13 22:40:14,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:14,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95132097] [2021-10-13 22:40:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:14,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:14,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:14,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95132097] [2021-10-13 22:40:14,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95132097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:14,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815229095] [2021-10-13 22:40:14,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:14,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:14,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:14,983 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:14,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2021-10-13 22:40:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:19,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:20,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815229095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:20,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:20,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:40:20,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175117838] [2021-10-13 22:40:20,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:20,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:20,318 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:20,624 INFO L93 Difference]: Finished difference Result 5421 states and 14097 transitions. [2021-10-13 22:40:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:40:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:20,630 INFO L225 Difference]: With dead ends: 5421 [2021-10-13 22:40:20,630 INFO L226 Difference]: Without dead ends: 5151 [2021-10-13 22:40:20,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:40:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-10-13 22:40:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 3878. [2021-10-13 22:40:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:20,675 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:20,675 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:20,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:20,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:20,678 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:20,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:20,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:20,878 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:20,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:20,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2058388218, now seen corresponding path program 152 times [2021-10-13 22:40:20,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:20,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752778543] [2021-10-13 22:40:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:20,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:21,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:21,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752778543] [2021-10-13 22:40:21,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752778543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:21,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791932868] [2021-10-13 22:40:21,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:40:21,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:21,197 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:21,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2021-10-13 22:40:26,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:40:26,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:26,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:26,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:26,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791932868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:26,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:26,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:26,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642904877] [2021-10-13 22:40:26,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:26,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:26,471 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:26,850 INFO L93 Difference]: Finished difference Result 5371 states and 13997 transitions. [2021-10-13 22:40:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:40:26,850 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:26,856 INFO L225 Difference]: With dead ends: 5371 [2021-10-13 22:40:26,857 INFO L226 Difference]: Without dead ends: 5101 [2021-10-13 22:40:26,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 427.1ms TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:40:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-10-13 22:40:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3878. [2021-10-13 22:40:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:26,897 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:26,897 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:26,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:26,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:26,900 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:26,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:27,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:27,101 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:27,101 INFO L82 PathProgramCache]: Analyzing trace with hash -476156908, now seen corresponding path program 153 times [2021-10-13 22:40:27,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:27,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138019767] [2021-10-13 22:40:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:27,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:27,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:27,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138019767] [2021-10-13 22:40:27,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138019767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:27,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883116663] [2021-10-13 22:40:27,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:40:27,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:27,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:27,372 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:27,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2021-10-13 22:40:32,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:40:32,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:32,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 22:40:32,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:32,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883116663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:32,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:32,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:40:32,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988294556] [2021-10-13 22:40:32,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:32,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:32,699 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:33,052 INFO L93 Difference]: Finished difference Result 5321 states and 13897 transitions. [2021-10-13 22:40:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:40:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:33,059 INFO L225 Difference]: With dead ends: 5321 [2021-10-13 22:40:33,059 INFO L226 Difference]: Without dead ends: 5051 [2021-10-13 22:40:33,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 389.7ms TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:40:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2021-10-13 22:40:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 3878. [2021-10-13 22:40:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:33,108 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:33,108 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:33,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:33,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:33,111 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:33,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2021-10-13 22:40:33,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-10-13 22:40:33,312 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:33,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1483260668, now seen corresponding path program 154 times [2021-10-13 22:40:33,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:33,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510019486] [2021-10-13 22:40:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:33,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:33,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:33,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510019486] [2021-10-13 22:40:33,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510019486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:33,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539524081] [2021-10-13 22:40:33,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:40:33,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:33,602 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:33,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2021-10-13 22:40:38,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:38,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:38,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:38,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:38,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539524081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:38,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:38,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:38,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173664061] [2021-10-13 22:40:38,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:38,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:38,908 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:39,341 INFO L93 Difference]: Finished difference Result 5271 states and 13797 transitions. [2021-10-13 22:40:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:40:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:39,394 INFO L225 Difference]: With dead ends: 5271 [2021-10-13 22:40:39,394 INFO L226 Difference]: Without dead ends: 5001 [2021-10-13 22:40:39,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 461.4ms TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:40:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2021-10-13 22:40:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 3878. [2021-10-13 22:40:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:39,451 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:39,451 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:39,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:39,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:39,454 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:39,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2021-10-13 22:40:39,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:39,655 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1348139630, now seen corresponding path program 155 times [2021-10-13 22:40:39,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:39,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501003738] [2021-10-13 22:40:39,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:39,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:39,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:39,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501003738] [2021-10-13 22:40:39,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501003738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:39,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687632288] [2021-10-13 22:40:39,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:39,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:39,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:39,913 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:39,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2021-10-13 22:40:44,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:40:44,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:44,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:44,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:45,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687632288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:45,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:45,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:40:45,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764068969] [2021-10-13 22:40:45,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:45,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:45,220 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:45,591 INFO L93 Difference]: Finished difference Result 5221 states and 13697 transitions. [2021-10-13 22:40:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:40:45,592 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:45,598 INFO L225 Difference]: With dead ends: 5221 [2021-10-13 22:40:45,598 INFO L226 Difference]: Without dead ends: 4951 [2021-10-13 22:40:45,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 395.5ms TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:40:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2021-10-13 22:40:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 3878. [2021-10-13 22:40:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:45,638 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:45,638 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:45,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:45,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:45,641 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:45,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:45,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:45,842 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1437515134, now seen corresponding path program 156 times [2021-10-13 22:40:45,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:45,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003163731] [2021-10-13 22:40:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:45,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:46,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:46,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003163731] [2021-10-13 22:40:46,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003163731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:46,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333706654] [2021-10-13 22:40:46,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:46,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:46,172 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:46,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2021-10-13 22:40:51,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:40:51,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:51,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:51,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:51,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333706654] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:51,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:51,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:40:51,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172897226] [2021-10-13 22:40:51,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:40:51,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:51,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:40:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:40:51,593 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:52,080 INFO L93 Difference]: Finished difference Result 5171 states and 13597 transitions. [2021-10-13 22:40:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:40:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:52,086 INFO L225 Difference]: With dead ends: 5171 [2021-10-13 22:40:52,086 INFO L226 Difference]: Without dead ends: 4901 [2021-10-13 22:40:52,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 478.1ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:40:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2021-10-13 22:40:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3878. [2021-10-13 22:40:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:52,126 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:52,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:52,126 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:52,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:52,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:52,130 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:52,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:52,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:52,330 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:52,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1969765232, now seen corresponding path program 157 times [2021-10-13 22:40:52,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:52,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156243617] [2021-10-13 22:40:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:52,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:52,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:52,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156243617] [2021-10-13 22:40:52,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156243617] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:52,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355653087] [2021-10-13 22:40:52,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:52,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:52,661 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:52,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2021-10-13 22:40:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:57,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:40:57,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:58,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355653087] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:58,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:58,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:40:58,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448769469] [2021-10-13 22:40:58,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:58,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:58,086 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:58,507 INFO L93 Difference]: Finished difference Result 5121 states and 13497 transitions. [2021-10-13 22:40:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:40:58,507 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:40:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:58,513 INFO L225 Difference]: With dead ends: 5121 [2021-10-13 22:40:58,513 INFO L226 Difference]: Without dead ends: 4851 [2021-10-13 22:40:58,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 422.8ms TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:40:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2021-10-13 22:40:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 3878. [2021-10-13 22:40:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:58,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:40:58,553 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:40:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:58,553 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:40:58,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:40:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:40:58,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:58,557 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:40:58,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:58,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:58,757 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:58,758 INFO L82 PathProgramCache]: Analyzing trace with hash -183603840, now seen corresponding path program 158 times [2021-10-13 22:40:58,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:58,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924656018] [2021-10-13 22:40:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:58,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:40:59,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:59,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924656018] [2021-10-13 22:40:59,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924656018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:59,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110218972] [2021-10-13 22:40:59,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:40:59,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:59,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:59,079 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:40:59,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2021-10-13 22:41:04,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:04,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:04,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:04,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:04,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110218972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:04,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:04,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:04,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284625971] [2021-10-13 22:41:04,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:04,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:04,626 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:05,166 INFO L93 Difference]: Finished difference Result 5071 states and 13397 transitions. [2021-10-13 22:41:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:41:05,166 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:05,173 INFO L225 Difference]: With dead ends: 5071 [2021-10-13 22:41:05,173 INFO L226 Difference]: Without dead ends: 4801 [2021-10-13 22:41:05,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 518.0ms TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:41:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-10-13 22:41:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 3878. [2021-10-13 22:41:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:05,216 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:05,216 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:05,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:05,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:05,220 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:05,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2021-10-13 22:41:05,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-10-13 22:41:05,421 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash -253785842, now seen corresponding path program 159 times [2021-10-13 22:41:05,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:05,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281807957] [2021-10-13 22:41:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:05,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:05,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:05,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281807957] [2021-10-13 22:41:05,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281807957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:05,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26684827] [2021-10-13 22:41:05,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:05,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:05,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:05,608 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:05,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2021-10-13 22:41:11,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:41:11,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:11,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 22:41:11,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:11,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26684827] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:11,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:11,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:41:11,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70784653] [2021-10-13 22:41:11,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:11,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:11,325 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:11,771 INFO L93 Difference]: Finished difference Result 5021 states and 13297 transitions. [2021-10-13 22:41:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:41:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:11,777 INFO L225 Difference]: With dead ends: 5021 [2021-10-13 22:41:11,778 INFO L226 Difference]: Without dead ends: 4751 [2021-10-13 22:41:11,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 413.7ms TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:41:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2021-10-13 22:41:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 3878. [2021-10-13 22:41:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:11,819 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:11,820 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:11,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:11,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:11,823 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:11,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2021-10-13 22:41:12,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-10-13 22:41:12,023 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:12,024 INFO L82 PathProgramCache]: Analyzing trace with hash 620207614, now seen corresponding path program 160 times [2021-10-13 22:41:12,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:12,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557480283] [2021-10-13 22:41:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:12,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:12,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:12,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557480283] [2021-10-13 22:41:12,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557480283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:12,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104050120] [2021-10-13 22:41:12,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:12,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:12,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:12,324 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:12,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2021-10-13 22:41:17,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:41:17,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:17,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:17,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:17,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104050120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:17,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:17,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:17,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384833266] [2021-10-13 22:41:17,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:17,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:17,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:17,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:17,888 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:18,458 INFO L93 Difference]: Finished difference Result 4971 states and 13197 transitions. [2021-10-13 22:41:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:41:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:18,465 INFO L225 Difference]: With dead ends: 4971 [2021-10-13 22:41:18,465 INFO L226 Difference]: Without dead ends: 4701 [2021-10-13 22:41:18,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 563.1ms TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:41:18,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-10-13 22:41:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 3878. [2021-10-13 22:41:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:18,571 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:18,571 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:18,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:18,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:18,598 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:18,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2021-10-13 22:41:18,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:18,799 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:18,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1115501324, now seen corresponding path program 161 times [2021-10-13 22:41:18,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:18,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127673797] [2021-10-13 22:41:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:18,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:19,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:19,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127673797] [2021-10-13 22:41:19,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127673797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:19,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225992569] [2021-10-13 22:41:19,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:41:19,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:19,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:19,035 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:19,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2021-10-13 22:41:24,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:41:24,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:24,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:24,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:24,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225992569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:24,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:24,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:41:24,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843780475] [2021-10-13 22:41:24,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:24,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:24,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:24,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:24,572 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:25,043 INFO L93 Difference]: Finished difference Result 4921 states and 13097 transitions. [2021-10-13 22:41:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:41:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:25,050 INFO L225 Difference]: With dead ends: 4921 [2021-10-13 22:41:25,050 INFO L226 Difference]: Without dead ends: 4651 [2021-10-13 22:41:25,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 446.9ms TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:41:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2021-10-13 22:41:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 3878. [2021-10-13 22:41:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:25,095 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:25,095 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:25,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:25,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:25,099 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:25,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2021-10-13 22:41:25,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-10-13 22:41:25,299 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:25,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1429359620, now seen corresponding path program 162 times [2021-10-13 22:41:25,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:25,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420459110] [2021-10-13 22:41:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:25,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:25,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:25,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420459110] [2021-10-13 22:41:25,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420459110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:25,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957544563] [2021-10-13 22:41:25,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:41:25,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:25,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:25,650 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:25,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2021-10-13 22:41:30,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:41:30,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:30,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 22:41:30,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:31,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957544563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:31,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:31,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:31,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431381240] [2021-10-13 22:41:31,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:31,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:31,211 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:31,776 INFO L93 Difference]: Finished difference Result 4871 states and 12997 transitions. [2021-10-13 22:41:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:41:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:31,782 INFO L225 Difference]: With dead ends: 4871 [2021-10-13 22:41:31,782 INFO L226 Difference]: Without dead ends: 4601 [2021-10-13 22:41:31,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 545.1ms TimeCoverageRelationStatistics Valid=773, Invalid=2533, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:41:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-10-13 22:41:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3878. [2021-10-13 22:41:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:31,822 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:31,822 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:31,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:31,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:31,825 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:31,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2021-10-13 22:41:32,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:32,026 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash -519462262, now seen corresponding path program 163 times [2021-10-13 22:41:32,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:32,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109502558] [2021-10-13 22:41:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:32,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:32,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:32,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109502558] [2021-10-13 22:41:32,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109502558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:32,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046598842] [2021-10-13 22:41:32,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:41:32,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:32,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:32,333 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:32,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2021-10-13 22:41:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:37,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:37,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:37,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046598842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:37,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:37,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:41:37,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495574535] [2021-10-13 22:41:37,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:37,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:37,900 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:38,394 INFO L93 Difference]: Finished difference Result 4821 states and 12897 transitions. [2021-10-13 22:41:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:41:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:38,400 INFO L225 Difference]: With dead ends: 4821 [2021-10-13 22:41:38,400 INFO L226 Difference]: Without dead ends: 4551 [2021-10-13 22:41:38,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 471.3ms TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:41:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-10-13 22:41:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3878. [2021-10-13 22:41:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8070673200928553) internal successors, (10883), 3877 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:38,441 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:38,441 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:38,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:38,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:38,444 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:38,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2021-10-13 22:41:38,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-10-13 22:41:38,645 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash -387346566, now seen corresponding path program 164 times [2021-10-13 22:41:38,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:38,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410014793] [2021-10-13 22:41:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:38,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:38,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:38,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410014793] [2021-10-13 22:41:38,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410014793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:38,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439399295] [2021-10-13 22:41:38,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:38,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:38,946 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:38,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2021-10-13 22:41:44,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:44,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:44,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:44,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:44,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439399295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:44,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:44,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:44,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873384610] [2021-10-13 22:41:44,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:44,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:44,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:44,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:44,527 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:45,220 INFO L93 Difference]: Finished difference Result 5279 states and 14163 transitions. [2021-10-13 22:41:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 22:41:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:45,226 INFO L225 Difference]: With dead ends: 5279 [2021-10-13 22:41:45,226 INFO L226 Difference]: Without dead ends: 4656 [2021-10-13 22:41:45,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 653.5ms TimeCoverageRelationStatistics Valid=1037, Invalid=2995, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:41:45,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2021-10-13 22:41:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 3788. [2021-10-13 22:41:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 2.81172432004225) internal successors, (10648), 3787 states have internal predecessors, (10648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 10648 transitions. [2021-10-13 22:41:45,269 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 10648 transitions. Word has length 120 [2021-10-13 22:41:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:45,270 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 10648 transitions. [2021-10-13 22:41:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 10648 transitions. [2021-10-13 22:41:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:45,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:45,273 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:45,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2021-10-13 22:41:45,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2021-10-13 22:41:45,473 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash -843729016, now seen corresponding path program 165 times [2021-10-13 22:41:45,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:45,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253037902] [2021-10-13 22:41:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:45,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:45,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:45,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253037902] [2021-10-13 22:41:45,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253037902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:45,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73726569] [2021-10-13 22:41:45,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:45,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:45,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:45,803 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:45,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2021-10-13 22:41:51,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:41:51,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:51,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:51,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:51,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73726569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:51,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:51,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 22:41:51,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500506530] [2021-10-13 22:41:51,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:51,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:51,492 INFO L87 Difference]: Start difference. First operand 3788 states and 10648 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:52,034 INFO L93 Difference]: Finished difference Result 5508 states and 14881 transitions. [2021-10-13 22:41:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:41:52,034 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:52,041 INFO L225 Difference]: With dead ends: 5508 [2021-10-13 22:41:52,042 INFO L226 Difference]: Without dead ends: 5238 [2021-10-13 22:41:52,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 504.2ms TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:41:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2021-10-13 22:41:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3968. [2021-10-13 22:41:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 2.825056717922864) internal successors, (11207), 3967 states have internal predecessors, (11207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 11207 transitions. [2021-10-13 22:41:52,093 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 11207 transitions. Word has length 120 [2021-10-13 22:41:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:52,093 INFO L470 AbstractCegarLoop]: Abstraction has 3968 states and 11207 transitions. [2021-10-13 22:41:52,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 11207 transitions. [2021-10-13 22:41:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:52,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:52,096 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:52,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2021-10-13 22:41:52,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:52,297 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash -778486726, now seen corresponding path program 166 times [2021-10-13 22:41:52,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:52,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819872960] [2021-10-13 22:41:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:52,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:52,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:52,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819872960] [2021-10-13 22:41:52,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819872960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:52,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140954623] [2021-10-13 22:41:52,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:52,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:52,473 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:52,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2021-10-13 22:41:58,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:41:58,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:58,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:58,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140954623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:58,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:58,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:58,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597187482] [2021-10-13 22:41:58,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:58,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:58,257 INFO L87 Difference]: Start difference. First operand 3968 states and 11207 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:58,915 INFO L93 Difference]: Finished difference Result 4995 states and 13581 transitions. [2021-10-13 22:41:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:41:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 22:41:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:58,921 INFO L225 Difference]: With dead ends: 4995 [2021-10-13 22:41:58,921 INFO L226 Difference]: Without dead ends: 4506 [2021-10-13 22:41:58,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 618.7ms TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:41:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-10-13 22:41:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2713. [2021-10-13 22:41:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7389380530973453) internal successors, (7428), 2712 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7428 transitions. [2021-10-13 22:41:58,951 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7428 transitions. Word has length 120 [2021-10-13 22:41:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:58,952 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7428 transitions. [2021-10-13 22:41:58,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7428 transitions. [2021-10-13 22:41:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:41:58,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:58,954 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:41:58,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:59,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:59,154 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:59,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1269647185, now seen corresponding path program 167 times [2021-10-13 22:41:59,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:59,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747642523] [2021-10-13 22:41:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:59,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:41:59,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:59,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747642523] [2021-10-13 22:41:59,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747642523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:59,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913778539] [2021-10-13 22:41:59,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:41:59,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:59,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:59,387 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:41:59,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2021-10-13 22:42:05,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 22:42:05,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:05,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:05,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:05,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913778539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:05,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:05,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:42:05,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140492504] [2021-10-13 22:42:05,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:05,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:05,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:05,464 INFO L87 Difference]: Start difference. First operand 2713 states and 7428 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:05,783 INFO L93 Difference]: Finished difference Result 4031 states and 10267 transitions. [2021-10-13 22:42:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:42:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:05,788 INFO L225 Difference]: With dead ends: 4031 [2021-10-13 22:42:05,788 INFO L226 Difference]: Without dead ends: 3761 [2021-10-13 22:42:05,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 363.3ms TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:42:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-10-13 22:42:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 2788. [2021-10-13 22:42:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.7459634015069967) internal successors, (7653), 2787 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7653 transitions. [2021-10-13 22:42:05,816 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7653 transitions. Word has length 125 [2021-10-13 22:42:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:05,816 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7653 transitions. [2021-10-13 22:42:05,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7653 transitions. [2021-10-13 22:42:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:05,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:05,819 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:05,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2021-10-13 22:42:06,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:06,019 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash -483806817, now seen corresponding path program 168 times [2021-10-13 22:42:06,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:06,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382451441] [2021-10-13 22:42:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:06,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:06,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:06,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382451441] [2021-10-13 22:42:06,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382451441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:06,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117684531] [2021-10-13 22:42:06,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:42:06,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:06,262 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:06,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2021-10-13 22:42:11,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 22:42:11,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:11,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:11,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:12,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117684531] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:12,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:12,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:12,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845592573] [2021-10-13 22:42:12,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:12,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:12,308 INFO L87 Difference]: Start difference. First operand 2788 states and 7653 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:12,676 INFO L93 Difference]: Finished difference Result 4501 states and 11282 transitions. [2021-10-13 22:42:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:42:12,676 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:12,681 INFO L225 Difference]: With dead ends: 4501 [2021-10-13 22:42:12,681 INFO L226 Difference]: Without dead ends: 4231 [2021-10-13 22:42:12,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 415.4ms TimeCoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:42:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2021-10-13 22:42:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 2863. [2021-10-13 22:42:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.752620545073375) internal successors, (7878), 2862 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7878 transitions. [2021-10-13 22:42:12,717 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7878 transitions. Word has length 125 [2021-10-13 22:42:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:12,717 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 7878 transitions. [2021-10-13 22:42:12,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7878 transitions. [2021-10-13 22:42:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:12,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:12,719 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:12,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2021-10-13 22:42:12,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2021-10-13 22:42:12,920 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:12,920 INFO L82 PathProgramCache]: Analyzing trace with hash -547641555, now seen corresponding path program 169 times [2021-10-13 22:42:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:12,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391164733] [2021-10-13 22:42:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:12,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:13,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:13,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391164733] [2021-10-13 22:42:13,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391164733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:13,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961742281] [2021-10-13 22:42:13,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:42:13,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:13,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:13,145 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:13,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2021-10-13 22:42:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:18,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:18,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:19,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961742281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:19,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:19,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:42:19,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526608740] [2021-10-13 22:42:19,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:19,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:19,216 INFO L87 Difference]: Start difference. First operand 2863 states and 7878 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:19,568 INFO L93 Difference]: Finished difference Result 4531 states and 11417 transitions. [2021-10-13 22:42:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:42:19,569 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:19,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:19,574 INFO L225 Difference]: With dead ends: 4531 [2021-10-13 22:42:19,574 INFO L226 Difference]: Without dead ends: 4261 [2021-10-13 22:42:19,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 379.9ms TimeCoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:42:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2021-10-13 22:42:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 2938. [2021-10-13 22:42:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.758937691521961) internal successors, (8103), 2937 states have internal predecessors, (8103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8103 transitions. [2021-10-13 22:42:19,605 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8103 transitions. Word has length 125 [2021-10-13 22:42:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:19,605 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 8103 transitions. [2021-10-13 22:42:19,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8103 transitions. [2021-10-13 22:42:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:19,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:19,608 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:19,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2021-10-13 22:42:19,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:19,808 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1962413085, now seen corresponding path program 170 times [2021-10-13 22:42:19,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:19,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675915159] [2021-10-13 22:42:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:19,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:20,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:20,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675915159] [2021-10-13 22:42:20,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675915159] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:20,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726069875] [2021-10-13 22:42:20,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:42:20,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:20,064 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:20,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2021-10-13 22:42:25,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:42:25,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:25,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:25,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:26,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726069875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:26,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:26,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:26,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523871241] [2021-10-13 22:42:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:26,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:26,288 INFO L87 Difference]: Start difference. First operand 2938 states and 8103 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:26,712 INFO L93 Difference]: Finished difference Result 4556 states and 11542 transitions. [2021-10-13 22:42:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:42:26,712 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:26,717 INFO L225 Difference]: With dead ends: 4556 [2021-10-13 22:42:26,717 INFO L226 Difference]: Without dead ends: 4286 [2021-10-13 22:42:26,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 462.8ms TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:42:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2021-10-13 22:42:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 3013. [2021-10-13 22:42:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.764940239043825) internal successors, (8328), 3012 states have internal predecessors, (8328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8328 transitions. [2021-10-13 22:42:26,751 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8328 transitions. Word has length 125 [2021-10-13 22:42:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:26,751 INFO L470 AbstractCegarLoop]: Abstraction has 3013 states and 8328 transitions. [2021-10-13 22:42:26,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8328 transitions. [2021-10-13 22:42:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:26,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:26,753 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:26,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2021-10-13 22:42:26,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:26,954 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:26,954 INFO L82 PathProgramCache]: Analyzing trace with hash -750322901, now seen corresponding path program 171 times [2021-10-13 22:42:26,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:26,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326505865] [2021-10-13 22:42:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:26,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:27,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:27,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326505865] [2021-10-13 22:42:27,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326505865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:27,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294120084] [2021-10-13 22:42:27,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:42:27,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:27,178 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:27,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2021-10-13 22:42:32,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-13 22:42:32,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:32,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 22:42:32,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:33,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294120084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:33,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:33,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:42:33,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977340257] [2021-10-13 22:42:33,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:33,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:33,289 INFO L87 Difference]: Start difference. First operand 3013 states and 8328 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:33,664 INFO L93 Difference]: Finished difference Result 4581 states and 11667 transitions. [2021-10-13 22:42:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:42:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:33,670 INFO L225 Difference]: With dead ends: 4581 [2021-10-13 22:42:33,670 INFO L226 Difference]: Without dead ends: 4311 [2021-10-13 22:42:33,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 397.5ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:42:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2021-10-13 22:42:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3088. [2021-10-13 22:42:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.770651117589893) internal successors, (8553), 3087 states have internal predecessors, (8553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8553 transitions. [2021-10-13 22:42:33,705 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8553 transitions. Word has length 125 [2021-10-13 22:42:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:33,705 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 8553 transitions. [2021-10-13 22:42:33,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8553 transitions. [2021-10-13 22:42:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:33,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:33,708 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:33,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2021-10-13 22:42:33,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-10-13 22:42:33,908 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:33,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1757426661, now seen corresponding path program 172 times [2021-10-13 22:42:33,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:33,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089454577] [2021-10-13 22:42:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:33,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:34,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:34,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089454577] [2021-10-13 22:42:34,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089454577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:34,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444893845] [2021-10-13 22:42:34,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:42:34,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:34,204 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:34,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2021-10-13 22:42:39,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:42:39,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:39,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:39,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:40,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444893845] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:40,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:40,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:40,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632965904] [2021-10-13 22:42:40,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:40,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:40,226 INFO L87 Difference]: Start difference. First operand 3088 states and 8553 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:40,678 INFO L93 Difference]: Finished difference Result 4606 states and 11792 transitions. [2021-10-13 22:42:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:42:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:40,683 INFO L225 Difference]: With dead ends: 4606 [2021-10-13 22:42:40,683 INFO L226 Difference]: Without dead ends: 4336 [2021-10-13 22:42:40,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 461.7ms TimeCoverageRelationStatistics Valid=691, Invalid=2279, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:42:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-10-13 22:42:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3163. [2021-10-13 22:42:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 3162 states have (on average 2.7760910815939277) internal successors, (8778), 3162 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 8778 transitions. [2021-10-13 22:42:40,724 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 8778 transitions. Word has length 125 [2021-10-13 22:42:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:40,724 INFO L470 AbstractCegarLoop]: Abstraction has 3163 states and 8778 transitions. [2021-10-13 22:42:40,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 8778 transitions. [2021-10-13 22:42:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:40,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:40,727 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:40,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:40,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:40,945 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1622305623, now seen corresponding path program 173 times [2021-10-13 22:42:40,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:40,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883128628] [2021-10-13 22:42:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:40,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:41,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:41,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883128628] [2021-10-13 22:42:41,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883128628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:41,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143062954] [2021-10-13 22:42:41,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:42:41,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:41,236 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:41,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2021-10-13 22:42:46,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 22:42:46,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:46,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:46,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:47,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143062954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:47,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:47,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:42:47,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080699124] [2021-10-13 22:42:47,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:47,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:47,303 INFO L87 Difference]: Start difference. First operand 3163 states and 8778 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:47,752 INFO L93 Difference]: Finished difference Result 4631 states and 11917 transitions. [2021-10-13 22:42:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:42:47,752 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:47,757 INFO L225 Difference]: With dead ends: 4631 [2021-10-13 22:42:47,757 INFO L226 Difference]: Without dead ends: 4361 [2021-10-13 22:42:47,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 452.1ms TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:42:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-10-13 22:42:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3238. [2021-10-13 22:42:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 2.7812789620018536) internal successors, (9003), 3237 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 9003 transitions. [2021-10-13 22:42:47,793 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 9003 transitions. Word has length 125 [2021-10-13 22:42:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:47,793 INFO L470 AbstractCegarLoop]: Abstraction has 3238 states and 9003 transitions. [2021-10-13 22:42:47,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 9003 transitions. [2021-10-13 22:42:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:47,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:47,796 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:47,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2021-10-13 22:42:47,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:47,996 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1711681127, now seen corresponding path program 174 times [2021-10-13 22:42:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:47,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332294265] [2021-10-13 22:42:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:47,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:48,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:48,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332294265] [2021-10-13 22:42:48,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332294265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:48,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288874588] [2021-10-13 22:42:48,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:42:48,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:48,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:48,317 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:48,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2021-10-13 22:42:54,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 22:42:54,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:54,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:42:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:54,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288874588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:54,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:54,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:42:54,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184579344] [2021-10-13 22:42:54,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:54,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:54,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:54,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:54,424 INFO L87 Difference]: Start difference. First operand 3238 states and 9003 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:54,930 INFO L93 Difference]: Finished difference Result 4656 states and 12042 transitions. [2021-10-13 22:42:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:42:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:42:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:54,936 INFO L225 Difference]: With dead ends: 4656 [2021-10-13 22:42:54,936 INFO L226 Difference]: Without dead ends: 4386 [2021-10-13 22:42:54,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 542.5ms TimeCoverageRelationStatistics Valid=745, Invalid=2447, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:42:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2021-10-13 22:42:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 3313. [2021-10-13 22:42:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3312 states have (on average 2.786231884057971) internal successors, (9228), 3312 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 9228 transitions. [2021-10-13 22:42:54,980 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 9228 transitions. Word has length 125 [2021-10-13 22:42:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:54,980 INFO L470 AbstractCegarLoop]: Abstraction has 3313 states and 9228 transitions. [2021-10-13 22:42:54,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 9228 transitions. [2021-10-13 22:42:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:42:54,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:54,983 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:42:55,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2021-10-13 22:42:55,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:55,184 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:55,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2051036071, now seen corresponding path program 175 times [2021-10-13 22:42:55,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:55,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337814331] [2021-10-13 22:42:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:55,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:42:55,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:55,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337814331] [2021-10-13 22:42:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337814331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:55,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063278066] [2021-10-13 22:42:55,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:42:55,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:55,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:55,393 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:42:55,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2021-10-13 22:43:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:01,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:01,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:01,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063278066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:01,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:01,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:43:01,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891831935] [2021-10-13 22:43:01,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:43:01,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:43:01,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:43:01,625 INFO L87 Difference]: Start difference. First operand 3313 states and 9228 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:02,072 INFO L93 Difference]: Finished difference Result 4681 states and 12167 transitions. [2021-10-13 22:43:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:43:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:02,078 INFO L225 Difference]: With dead ends: 4681 [2021-10-13 22:43:02,078 INFO L226 Difference]: Without dead ends: 4411 [2021-10-13 22:43:02,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 430.5ms TimeCoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:43:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-10-13 22:43:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 3388. [2021-10-13 22:43:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 2.7909654561558903) internal successors, (9453), 3387 states have internal predecessors, (9453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 9453 transitions. [2021-10-13 22:43:02,122 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 9453 transitions. Word has length 125 [2021-10-13 22:43:02,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:02,123 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 9453 transitions. [2021-10-13 22:43:02,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 9453 transitions. [2021-10-13 22:43:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:02,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:02,126 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:02,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:02,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:02,326 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:02,326 INFO L82 PathProgramCache]: Analyzing trace with hash -457769833, now seen corresponding path program 176 times [2021-10-13 22:43:02,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:02,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929473676] [2021-10-13 22:43:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:02,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:02,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:02,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929473676] [2021-10-13 22:43:02,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929473676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:02,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335552934] [2021-10-13 22:43:02,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:43:02,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:02,593 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:02,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2021-10-13 22:43:08,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:43:08,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:08,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:08,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:08,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335552934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:08,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:08,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:43:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441344079] [2021-10-13 22:43:08,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:43:08,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:43:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:43:08,769 INFO L87 Difference]: Start difference. First operand 3388 states and 9453 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:09,305 INFO L93 Difference]: Finished difference Result 4706 states and 12292 transitions. [2021-10-13 22:43:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:43:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:09,311 INFO L225 Difference]: With dead ends: 4706 [2021-10-13 22:43:09,311 INFO L226 Difference]: Without dead ends: 4436 [2021-10-13 22:43:09,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 517.9ms TimeCoverageRelationStatistics Valid=815, Invalid=2607, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:43:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2021-10-13 22:43:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 3463. [2021-10-13 22:43:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.7954939341421143) internal successors, (9678), 3462 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9678 transitions. [2021-10-13 22:43:09,351 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9678 transitions. Word has length 125 [2021-10-13 22:43:09,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:09,351 INFO L470 AbstractCegarLoop]: Abstraction has 3463 states and 9678 transitions. [2021-10-13 22:43:09,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9678 transitions. [2021-10-13 22:43:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:09,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:09,354 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:09,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2021-10-13 22:43:09,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:09,554 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:09,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:09,555 INFO L82 PathProgramCache]: Analyzing trace with hash -527951835, now seen corresponding path program 177 times [2021-10-13 22:43:09,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:09,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552828241] [2021-10-13 22:43:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:09,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:09,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:09,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552828241] [2021-10-13 22:43:09,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552828241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:09,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372124193] [2021-10-13 22:43:09,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:43:09,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:09,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:09,835 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:09,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2021-10-13 22:43:15,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-13 22:43:15,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:15,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 22:43:15,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:16,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372124193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:16,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:43:16,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948430661] [2021-10-13 22:43:16,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:43:16,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:43:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:43:16,010 INFO L87 Difference]: Start difference. First operand 3463 states and 9678 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:16,473 INFO L93 Difference]: Finished difference Result 4731 states and 12417 transitions. [2021-10-13 22:43:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:43:16,474 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:16,479 INFO L225 Difference]: With dead ends: 4731 [2021-10-13 22:43:16,479 INFO L226 Difference]: Without dead ends: 4461 [2021-10-13 22:43:16,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 457.3ms TimeCoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:43:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2021-10-13 22:43:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3538. [2021-10-13 22:43:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.799830364715861) internal successors, (9903), 3537 states have internal predecessors, (9903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9903 transitions. [2021-10-13 22:43:16,520 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9903 transitions. Word has length 125 [2021-10-13 22:43:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:16,521 INFO L470 AbstractCegarLoop]: Abstraction has 3538 states and 9903 transitions. [2021-10-13 22:43:16,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:16,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9903 transitions. [2021-10-13 22:43:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:16,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:16,524 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:16,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:16,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:16,724 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:16,725 INFO L82 PathProgramCache]: Analyzing trace with hash 346041621, now seen corresponding path program 178 times [2021-10-13 22:43:16,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:16,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447623314] [2021-10-13 22:43:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:16,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:16,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:16,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447623314] [2021-10-13 22:43:16,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447623314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:16,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030094520] [2021-10-13 22:43:16,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:43:16,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:16,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:16,943 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:16,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2021-10-13 22:43:22,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:43:22,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:22,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:22,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:23,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030094520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:23,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:23,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:43:23,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556629590] [2021-10-13 22:43:23,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:43:23,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:43:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:43:23,246 INFO L87 Difference]: Start difference. First operand 3538 states and 9903 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:23,828 INFO L93 Difference]: Finished difference Result 4756 states and 12542 transitions. [2021-10-13 22:43:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:43:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:23,835 INFO L225 Difference]: With dead ends: 4756 [2021-10-13 22:43:23,835 INFO L226 Difference]: Without dead ends: 4486 [2021-10-13 22:43:23,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 559.8ms TimeCoverageRelationStatistics Valid=901, Invalid=2759, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:43:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-10-13 22:43:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3613. [2021-10-13 22:43:23,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.8039867109634553) internal successors, (10128), 3612 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 10128 transitions. [2021-10-13 22:43:23,906 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 10128 transitions. Word has length 125 [2021-10-13 22:43:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:23,906 INFO L470 AbstractCegarLoop]: Abstraction has 3613 states and 10128 transitions. [2021-10-13 22:43:23,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 10128 transitions. [2021-10-13 22:43:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:23,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:23,910 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:23,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2021-10-13 22:43:24,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186 [2021-10-13 22:43:24,110 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:24,111 INFO L82 PathProgramCache]: Analyzing trace with hash 841335331, now seen corresponding path program 179 times [2021-10-13 22:43:24,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:24,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115066780] [2021-10-13 22:43:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:24,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:24,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:24,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115066780] [2021-10-13 22:43:24,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115066780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:24,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661645960] [2021-10-13 22:43:24,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:43:24,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:24,335 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:24,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2021-10-13 22:43:30,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 22:43:30,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:30,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:30,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661645960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:30,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:30,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:43:30,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027251365] [2021-10-13 22:43:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:43:30,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:43:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:43:30,508 INFO L87 Difference]: Start difference. First operand 3613 states and 10128 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:31,000 INFO L93 Difference]: Finished difference Result 4781 states and 12667 transitions. [2021-10-13 22:43:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:43:31,000 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:31,006 INFO L225 Difference]: With dead ends: 4781 [2021-10-13 22:43:31,006 INFO L226 Difference]: Without dead ends: 4511 [2021-10-13 22:43:31,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 459.3ms TimeCoverageRelationStatistics Valid=971, Invalid=2689, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:43:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2021-10-13 22:43:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3688. [2021-10-13 22:43:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.807973962571196) internal successors, (10353), 3687 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10353 transitions. [2021-10-13 22:43:31,049 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10353 transitions. Word has length 125 [2021-10-13 22:43:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:31,049 INFO L470 AbstractCegarLoop]: Abstraction has 3688 states and 10353 transitions. [2021-10-13 22:43:31,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10353 transitions. [2021-10-13 22:43:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:31,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:31,053 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:31,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2021-10-13 22:43:31,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:31,253 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:31,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1703525613, now seen corresponding path program 180 times [2021-10-13 22:43:31,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:31,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46958314] [2021-10-13 22:43:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:31,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:31,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:31,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46958314] [2021-10-13 22:43:31,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46958314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:31,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699366299] [2021-10-13 22:43:31,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:43:31,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:31,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:31,554 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:31,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2021-10-13 22:43:37,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 22:43:37,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:37,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 22:43:37,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:37,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699366299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:37,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:37,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:43:37,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425445518] [2021-10-13 22:43:37,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:43:37,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:43:37,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:43:37,797 INFO L87 Difference]: Start difference. First operand 3688 states and 10353 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:38,399 INFO L93 Difference]: Finished difference Result 4806 states and 12792 transitions. [2021-10-13 22:43:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:43:38,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:38,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:38,405 INFO L225 Difference]: With dead ends: 4806 [2021-10-13 22:43:38,406 INFO L226 Difference]: Without dead ends: 4536 [2021-10-13 22:43:38,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 588.8ms TimeCoverageRelationStatistics Valid=937, Invalid=2969, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 22:43:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-10-13 22:43:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3763. [2021-10-13 22:43:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.8118022328548644) internal successors, (10578), 3762 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10578 transitions. [2021-10-13 22:43:38,451 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10578 transitions. Word has length 125 [2021-10-13 22:43:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:38,451 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 10578 transitions. [2021-10-13 22:43:38,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10578 transitions. [2021-10-13 22:43:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:38,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:38,455 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:38,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:38,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-10-13 22:43:38,656 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash -793628255, now seen corresponding path program 181 times [2021-10-13 22:43:38,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:38,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716819693] [2021-10-13 22:43:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:38,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:38,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:38,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716819693] [2021-10-13 22:43:38,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716819693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:38,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449468282] [2021-10-13 22:43:38,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:43:38,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:38,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:38,853 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:38,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2021-10-13 22:43:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:44,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:45,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:45,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449468282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:45,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:45,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 22:43:45,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144524481] [2021-10-13 22:43:45,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:43:45,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:43:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:43:45,255 INFO L87 Difference]: Start difference. First operand 3763 states and 10578 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:45,774 INFO L93 Difference]: Finished difference Result 4831 states and 12917 transitions. [2021-10-13 22:43:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:43:45,774 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:45,780 INFO L225 Difference]: With dead ends: 4831 [2021-10-13 22:43:45,780 INFO L226 Difference]: Without dead ends: 4561 [2021-10-13 22:43:45,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 484.9ms TimeCoverageRelationStatistics Valid=1087, Invalid=2819, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 22:43:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2021-10-13 22:43:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 3838. [2021-10-13 22:43:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.815480844409695) internal successors, (10803), 3837 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10803 transitions. [2021-10-13 22:43:45,854 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10803 transitions. Word has length 125 [2021-10-13 22:43:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:45,854 INFO L470 AbstractCegarLoop]: Abstraction has 3838 states and 10803 transitions. [2021-10-13 22:43:45,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10803 transitions. [2021-10-13 22:43:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:45,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:45,857 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:45,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2021-10-13 22:43:46,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-10-13 22:43:46,058 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:46,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:46,058 INFO L82 PathProgramCache]: Analyzing trace with hash -661512559, now seen corresponding path program 182 times [2021-10-13 22:43:46,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:46,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505649827] [2021-10-13 22:43:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:46,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:46,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:46,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505649827] [2021-10-13 22:43:46,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505649827] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:46,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274728639] [2021-10-13 22:43:46,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:43:46,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:46,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:46,289 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:43:46,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2021-10-13 22:43:52,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:43:52,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:43:52,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:43:52,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:43:52,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274728639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:52,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:52,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 22:43:52,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026456285] [2021-10-13 22:43:52,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:43:52,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:43:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:43:52,751 INFO L87 Difference]: Start difference. First operand 3838 states and 10803 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:53,429 INFO L93 Difference]: Finished difference Result 4916 states and 13207 transitions. [2021-10-13 22:43:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 22:43:53,429 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 22:43:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:53,435 INFO L225 Difference]: With dead ends: 4916 [2021-10-13 22:43:53,435 INFO L226 Difference]: Without dead ends: 4646 [2021-10-13 22:43:53,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 627.1ms TimeCoverageRelationStatistics Valid=1121, Invalid=3039, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:43:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2021-10-13 22:43:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 3913. [2021-10-13 22:43:53,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.8241308793456033) internal successors, (11048), 3912 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 11048 transitions. [2021-10-13 22:43:53,488 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 11048 transitions. Word has length 125 [2021-10-13 22:43:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:53,488 INFO L470 AbstractCegarLoop]: Abstraction has 3913 states and 11048 transitions. [2021-10-13 22:43:53,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:43:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 11048 transitions. [2021-10-13 22:43:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 22:43:53,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:53,492 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:43:53,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:53,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:53,693 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1117895009, now seen corresponding path program 183 times [2021-10-13 22:43:53,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:53,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973620585] [2021-10-13 22:43:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:53,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-10-13 22:43:54,019 WARN L223 SmtUtils]: Removed 2 from assertion stack [2021-10-13 22:43:54,021 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:43:54,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-10-13 22:43:54,021 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 126 with TraceHistMax 10,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 120ms.. [2021-10-13 22:43:54,022 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:43:54,022 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 22:43:54,026 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:43:54,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:43:54,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:43:54 BasicIcfg [2021-10-13 22:43:54,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:43:54,031 INFO L168 Benchmark]: Toolchain (without parser) took 687493.83 ms. Allocated memory was 200.3 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 149.3 MB in the beginning and 1.0 GB in the end (delta: -887.0 MB). Peak memory consumption was 787.8 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:54,032 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 200.3 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:43:54,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.53 ms. Allocated memory is still 200.3 MB. Free memory was 149.0 MB in the beginning and 168.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:54,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.15 ms. Allocated memory is still 200.3 MB. Free memory was 168.2 MB in the beginning and 166.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:54,033 INFO L168 Benchmark]: Boogie Preprocessor took 27.04 ms. Allocated memory is still 200.3 MB. Free memory was 166.6 MB in the beginning and 165.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:54,035 INFO L168 Benchmark]: RCFGBuilder took 294.53 ms. Allocated memory is still 200.3 MB. Free memory was 165.1 MB in the beginning and 153.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:54,035 INFO L168 Benchmark]: TraceAbstraction took 686815.13 ms. Allocated memory was 200.3 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 153.0 MB in the beginning and 1.0 GB in the end (delta: -883.3 MB). Peak memory consumption was 791.3 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:54,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 200.3 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.53 ms. Allocated memory is still 200.3 MB. Free memory was 149.0 MB in the beginning and 168.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.15 ms. Allocated memory is still 200.3 MB. Free memory was 168.2 MB in the beginning and 166.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.04 ms. Allocated memory is still 200.3 MB. Free memory was 166.6 MB in the beginning and 165.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 294.53 ms. Allocated memory is still 200.3 MB. Free memory was 165.1 MB in the beginning and 153.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 686815.13 ms. Allocated memory was 200.3 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 153.0 MB in the beginning and 1.0 GB in the end (delta: -883.3 MB). Peak memory consumption was 791.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 126 with TraceHistMax 10,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 120ms.. - TimeoutResultAtElement [Line: 713]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 126 with TraceHistMax 10,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 120ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 126 with TraceHistMax 10,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 120ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 686742.5ms, OverallIterations: 192, TraceHistogramMax: 10, EmptinessCheckTime: 558.8ms, AutomataDifference: 63887.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 51.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18464 SDtfs, 130864 SDslu, 152907 SDs, 0 SdLazy, 28022 SolverSat, 18923 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12697.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25269 GetRequests, 17621 SyntacticMatches, 0 SemanticMatches, 7648 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78569 ImplicationChecksByTransitivity, 60164.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3968occurred in iteration=174, InterpolantAutomatonStates: 5727, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6518.0ms AutomataMinimizationTime, 191 MinimizatonAttempts, 153303 StatesRemovedByMinimization, 191 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1559.1ms SsaConstructionTime, 4605.9ms SatisfiabilityAnalysisTime, 73826.8ms InterpolantComputationTime, 35518 NumberOfCodeBlocks, 35518 NumberOfCodeBlocksAsserted, 969 NumberOfCheckSat, 35142 ConstructedInterpolants, 0 QuantifiedInterpolants, 145288 SizeOfPredicates, 2612 NumberOfNonLiveVariables, 38222 ConjunctsInSsa, 3698 ConjunctsInUnsatCore, 376 InterpolantComputations, 6 PerfectInterpolantSequences, 0/63796 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown