/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-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:32:04,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:32:04,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:32:04,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 22:32:04,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:32:04,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:32:04,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:32:04,638 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 22:32:04,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:32:04,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:32:04,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 22:32:04,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 22:32:04,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:32:04,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:32:04,670 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:32:04,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:32:04,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:32:04,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:32:04,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:32:04,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:32:04,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:32:04,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:32:04,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:32:04,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:32:04,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:32:04,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:32:04,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:32:04,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:32:04,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:32:04,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:32:04,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:32:04,674 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:32:04,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 22:32:04,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:32:04,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:32:04,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:32:04,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:32:04,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:32:04,925 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:32:04,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2021-10-13 22:32:04,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aafdf42b1/71701ad8de57499dac714fc081e19d1e/FLAG69f0458bd [2021-10-13 22:32:05,409 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:32:05,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2021-10-13 22:32:05,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aafdf42b1/71701ad8de57499dac714fc081e19d1e/FLAG69f0458bd [2021-10-13 22:32:05,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aafdf42b1/71701ad8de57499dac714fc081e19d1e [2021-10-13 22:32:05,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:32:05,776 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:32:05,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:32:05,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:32:05,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:32:05,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:32:05" (1/1) ... [2021-10-13 22:32:05,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736c655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:05, skipping insertion in model container [2021-10-13 22:32:05,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:32:05" (1/1) ... [2021-10-13 22:32:05,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:32:05,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:32:06,096 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-longer-2.i[30963,30976] [2021-10-13 22:32:06,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:32:06,108 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:32:06,168 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-longer-2.i[30963,30976] [2021-10-13 22:32:06,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:32:06,205 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:32:06,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06 WrapperNode [2021-10-13 22:32:06,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:32:06,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:32:06,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:32:06,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:32:06,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:32:06,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:32:06,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:32:06,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:32:06,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:32:06,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:32:06,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:32:06,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:32:06,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (1/1) ... [2021-10-13 22:32:06,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:32:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:06,327 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 22:32:06,347 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 22:32:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-10-13 22:32:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-10-13 22:32:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-10-13 22:32:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-10-13 22:32:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:32:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:32:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:32:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:32:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:32:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:32:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:32:06,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:32:06,365 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 22:32:06,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:32:06,566 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 22:32:06,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:32:06 BoogieIcfgContainer [2021-10-13 22:32:06,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:32:06,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:32:06,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:32:06,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:32:06,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:32:05" (1/3) ... [2021-10-13 22:32:06,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf71416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:32:06, skipping insertion in model container [2021-10-13 22:32:06,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:32:06" (2/3) ... [2021-10-13 22:32:06,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf71416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:32:06, skipping insertion in model container [2021-10-13 22:32:06,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:32:06" (3/3) ... [2021-10-13 22:32:06,574 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2021-10-13 22:32:06,578 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 22:32:06,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:32:06,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:32:06,579 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:32:06,604 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,604 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,604 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,605 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,605 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,605 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,605 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,605 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,606 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,606 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,606 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,606 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,607 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,607 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,607 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,607 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,607 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,608 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,608 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,627 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,627 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,629 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,629 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,629 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,630 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,630 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,630 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,631 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,631 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,631 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,631 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,632 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,632 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,634 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,634 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,649 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,649 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,656 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,656 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:32:06,658 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:32:06,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:32:06,698 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 22:32:06,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 22:32:06,708 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 66 transitions, 142 flow [2021-10-13 22:32:06,766 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 22:32:06,772 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 22:32:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 22:32:06,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:06,782 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 22:32:06,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:06,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2112281486, now seen corresponding path program 1 times [2021-10-13 22:32:06,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:06,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891357550] [2021-10-13 22:32:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:06,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:07,208 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 22:32:07,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:07,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891357550] [2021-10-13 22:32:07,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891357550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:07,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:07,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:32:07,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910152936] [2021-10-13 22:32:07,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:32:07,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:32:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:32:07,236 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 22:32:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:07,391 INFO L93 Difference]: Finished difference Result 1539 states and 4126 transitions. [2021-10-13 22:32:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 22:32:07,393 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 22:32:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:07,417 INFO L225 Difference]: With dead ends: 1539 [2021-10-13 22:32:07,417 INFO L226 Difference]: Without dead ends: 1242 [2021-10-13 22:32:07,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-13 22:32:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 942. [2021-10-13 22:32:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.7077577045696066) internal successors, (2548), 941 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2548 transitions. [2021-10-13 22:32:07,515 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2548 transitions. Word has length 32 [2021-10-13 22:32:07,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:07,516 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2548 transitions. [2021-10-13 22:32:07,516 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 22:32:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2548 transitions. [2021-10-13 22:32:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 22:32:07,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:07,523 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 22:32:07,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:32:07,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash -683892967, now seen corresponding path program 1 times [2021-10-13 22:32:07,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:07,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793437281] [2021-10-13 22:32:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:07,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:07,665 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 22:32:07,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:07,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793437281] [2021-10-13 22:32:07,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793437281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:07,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:07,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:32:07,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003386516] [2021-10-13 22:32:07,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:32:07,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:32:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:32:07,671 INFO L87 Difference]: Start difference. First operand 942 states and 2548 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 22:32:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:07,765 INFO L93 Difference]: Finished difference Result 1194 states and 3180 transitions. [2021-10-13 22:32:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:32:07,765 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 22:32:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:07,770 INFO L225 Difference]: With dead ends: 1194 [2021-10-13 22:32:07,770 INFO L226 Difference]: Without dead ends: 942 [2021-10-13 22:32:07,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:32:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-13 22:32:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 800. [2021-10-13 22:32:07,788 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 22:32:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2180 transitions. [2021-10-13 22:32:07,791 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2180 transitions. Word has length 36 [2021-10-13 22:32:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:07,791 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2180 transitions. [2021-10-13 22:32:07,791 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 22:32:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2180 transitions. [2021-10-13 22:32:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 22:32:07,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:07,793 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 22:32:07,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:32:07,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash 482644881, now seen corresponding path program 1 times [2021-10-13 22:32:07,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:07,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044292006] [2021-10-13 22:32:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:07,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:07,872 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 22:32:07,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:07,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044292006] [2021-10-13 22:32:07,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044292006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:07,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:07,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:32:07,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447149676] [2021-10-13 22:32:07,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:32:07,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:07,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:32:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:32:07,874 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 22:32:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:07,957 INFO L93 Difference]: Finished difference Result 1302 states and 3436 transitions. [2021-10-13 22:32:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 22:32:07,986 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 22:32:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:07,991 INFO L225 Difference]: With dead ends: 1302 [2021-10-13 22:32:07,991 INFO L226 Difference]: Without dead ends: 920 [2021-10-13 22:32:07,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-13 22:32:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 864. [2021-10-13 22:32:08,008 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 22:32:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2320 transitions. [2021-10-13 22:32:08,011 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2320 transitions. Word has length 36 [2021-10-13 22:32:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:08,011 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2320 transitions. [2021-10-13 22:32:08,012 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 22:32:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2320 transitions. [2021-10-13 22:32:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:08,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:08,013 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 22:32:08,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:32:08,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:08,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1828771722, now seen corresponding path program 1 times [2021-10-13 22:32:08,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:08,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413827795] [2021-10-13 22:32:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:08,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:08,085 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 22:32:08,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:08,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413827795] [2021-10-13 22:32:08,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413827795] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:08,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:08,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:32:08,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114330239] [2021-10-13 22:32:08,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:32:08,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:32:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:32:08,088 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 22:32:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:08,180 INFO L93 Difference]: Finished difference Result 1332 states and 3512 transitions. [2021-10-13 22:32:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 22:32:08,182 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 22:32:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:08,191 INFO L225 Difference]: With dead ends: 1332 [2021-10-13 22:32:08,192 INFO L226 Difference]: Without dead ends: 1072 [2021-10-13 22:32:08,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-13 22:32:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 876. [2021-10-13 22:32:08,210 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 22:32:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2368 transitions. [2021-10-13 22:32:08,214 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2368 transitions. Word has length 40 [2021-10-13 22:32:08,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:08,216 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2368 transitions. [2021-10-13 22:32:08,216 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 22:32:08,216 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2368 transitions. [2021-10-13 22:32:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:08,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:08,218 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 22:32:08,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:32:08,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 550294988, now seen corresponding path program 2 times [2021-10-13 22:32:08,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:08,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843505753] [2021-10-13 22:32:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:08,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:08,354 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 22:32:08,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843505753] [2021-10-13 22:32:08,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843505753] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:08,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:08,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:32:08,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140453347] [2021-10-13 22:32:08,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:32:08,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:32:08,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:32:08,356 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 22:32:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:08,473 INFO L93 Difference]: Finished difference Result 1772 states and 4744 transitions. [2021-10-13 22:32:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:32:08,474 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 22:32:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:08,481 INFO L225 Difference]: With dead ends: 1772 [2021-10-13 22:32:08,481 INFO L226 Difference]: Without dead ends: 1505 [2021-10-13 22:32:08,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-13 22:32:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 975. [2021-10-13 22:32:08,503 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 22:32:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2628 transitions. [2021-10-13 22:32:08,507 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2628 transitions. Word has length 40 [2021-10-13 22:32:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:08,507 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 2628 transitions. [2021-10-13 22:32:08,507 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 22:32:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2628 transitions. [2021-10-13 22:32:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:08,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:08,509 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 22:32:08,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:32:08,509 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:08,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2026923248, now seen corresponding path program 3 times [2021-10-13 22:32:08,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:08,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3389676] [2021-10-13 22:32:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:08,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:08,612 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 22:32:08,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:08,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3389676] [2021-10-13 22:32:08,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3389676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:08,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:08,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:32:08,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446118110] [2021-10-13 22:32:08,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:32:08,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:32:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:32:08,614 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 22:32:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:08,709 INFO L93 Difference]: Finished difference Result 2211 states and 5878 transitions. [2021-10-13 22:32:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:32:08,709 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 22:32:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:08,718 INFO L225 Difference]: With dead ends: 2211 [2021-10-13 22:32:08,718 INFO L226 Difference]: Without dead ends: 1944 [2021-10-13 22:32:08,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-10-13 22:32:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1127. [2021-10-13 22:32:08,746 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 22:32:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3119 transitions. [2021-10-13 22:32:08,751 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3119 transitions. Word has length 40 [2021-10-13 22:32:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:08,751 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 3119 transitions. [2021-10-13 22:32:08,751 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 22:32:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3119 transitions. [2021-10-13 22:32:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 22:32:08,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:08,753 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 22:32:08,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 22:32:08,753 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1961680958, now seen corresponding path program 4 times [2021-10-13 22:32:08,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:08,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055858196] [2021-10-13 22:32:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:08,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:08,856 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 22:32:08,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:08,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055858196] [2021-10-13 22:32:08,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055858196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:32:08,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:32:08,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:32:08,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168141398] [2021-10-13 22:32:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:32:08,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:32:08,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:32:08,858 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 22:32:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:08,984 INFO L93 Difference]: Finished difference Result 1519 states and 4031 transitions. [2021-10-13 22:32:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:32:08,984 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 22:32:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:08,990 INFO L225 Difference]: With dead ends: 1519 [2021-10-13 22:32:08,990 INFO L226 Difference]: Without dead ends: 1138 [2021-10-13 22:32:08,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-10-13 22:32:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1033. [2021-10-13 22:32:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 2.73546511627907) internal successors, (2823), 1032 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2823 transitions. [2021-10-13 22:32:09,015 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2823 transitions. Word has length 40 [2021-10-13 22:32:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:09,015 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 2823 transitions. [2021-10-13 22:32:09,015 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 22:32:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2823 transitions. [2021-10-13 22:32:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:09,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:09,017 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 22:32:09,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 22:32:09,017 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1188275055, now seen corresponding path program 1 times [2021-10-13 22:32:09,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:09,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875159681] [2021-10-13 22:32:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:09,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:09,103 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 22:32:09,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:09,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875159681] [2021-10-13 22:32:09,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875159681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357753066] [2021-10-13 22:32:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:09,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:09,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:09,107 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 22:32:09,131 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 22:32:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:09,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:32:09,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:09,506 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 22:32:09,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357753066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:09,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:32:09,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661230997] [2021-10-13 22:32:09,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:09,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:09,508 INFO L87 Difference]: Start difference. First operand 1033 states and 2823 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 22:32:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:09,633 INFO L93 Difference]: Finished difference Result 1451 states and 3787 transitions. [2021-10-13 22:32:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 22:32:09,633 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 22:32:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:09,639 INFO L225 Difference]: With dead ends: 1451 [2021-10-13 22:32:09,639 INFO L226 Difference]: Without dead ends: 1181 [2021-10-13 22:32:09,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-10-13 22:32:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1083. [2021-10-13 22:32:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.7060998151571165) internal successors, (2928), 1082 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2928 transitions. [2021-10-13 22:32:09,668 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2928 transitions. Word has length 45 [2021-10-13 22:32:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:09,669 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2928 transitions. [2021-10-13 22:32:09,669 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 22:32:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2928 transitions. [2021-10-13 22:32:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:09,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:09,671 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 22:32:09,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:09,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:09,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:09,894 INFO L82 PathProgramCache]: Analyzing trace with hash 895709223, now seen corresponding path program 2 times [2021-10-13 22:32:09,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:09,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691906743] [2021-10-13 22:32:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:09,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:09,962 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 22:32:09,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:09,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691906743] [2021-10-13 22:32:09,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691906743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618681865] [2021-10-13 22:32:09,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:09,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:09,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:09,964 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 22:32:09,981 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 22:32:10,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:10,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:10,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:10,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:10,207 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 22:32:10,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618681865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:10,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:10,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 22:32:10,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599206675] [2021-10-13 22:32:10,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 22:32:10,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:10,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 22:32:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 22:32:10,209 INFO L87 Difference]: Start difference. First operand 1083 states and 2928 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 22:32:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:10,359 INFO L93 Difference]: Finished difference Result 2333 states and 6191 transitions. [2021-10-13 22:32:10,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:32:10,359 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 22:32:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:10,368 INFO L225 Difference]: With dead ends: 2333 [2021-10-13 22:32:10,369 INFO L226 Difference]: Without dead ends: 2063 [2021-10-13 22:32:10,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2021-10-13 22:32:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1218. [2021-10-13 22:32:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1217 states have (on average 2.7666392769104355) internal successors, (3367), 1217 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 3367 transitions. [2021-10-13 22:32:10,401 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 3367 transitions. Word has length 45 [2021-10-13 22:32:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:10,401 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 3367 transitions. [2021-10-13 22:32:10,401 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 22:32:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 3367 transitions. [2021-10-13 22:32:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:10,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:10,403 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 22:32:10,429 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 22:32:10,623 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,SelfDestructingSolverStorable8 [2021-10-13 22:32:10,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 960951513, now seen corresponding path program 3 times [2021-10-13 22:32:10,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:10,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955747575] [2021-10-13 22:32:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:10,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:10,692 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 22:32:10,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:10,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955747575] [2021-10-13 22:32:10,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955747575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:10,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913923157] [2021-10-13 22:32:10,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:10,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:10,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:10,694 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 22:32:10,699 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 22:32:10,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:32:10,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:10,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:10,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:10,935 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 22:32:10,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913923157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:10,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:10,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:32:10,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458006381] [2021-10-13 22:32:10,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:10,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:10,937 INFO L87 Difference]: Start difference. First operand 1218 states and 3367 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 22:32:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:11,178 INFO L93 Difference]: Finished difference Result 2121 states and 5621 transitions. [2021-10-13 22:32:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:11,178 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 22:32:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:11,185 INFO L225 Difference]: With dead ends: 2121 [2021-10-13 22:32:11,185 INFO L226 Difference]: Without dead ends: 1546 [2021-10-13 22:32:11,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 185.0ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:32:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-10-13 22:32:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1253. [2021-10-13 22:32:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.7619808306709266) internal successors, (3458), 1252 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3458 transitions. [2021-10-13 22:32:11,214 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3458 transitions. Word has length 45 [2021-10-13 22:32:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:11,215 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 3458 transitions. [2021-10-13 22:32:11,215 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 22:32:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3458 transitions. [2021-10-13 22:32:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 22:32:11,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:11,217 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 22:32:11,238 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 22:32:11,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:11,438 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:11,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:11,439 INFO L82 PathProgramCache]: Analyzing trace with hash 877684220, now seen corresponding path program 1 times [2021-10-13 22:32:11,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:11,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443867381] [2021-10-13 22:32:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:11,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:11,517 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 22:32:11,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:11,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443867381] [2021-10-13 22:32:11,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443867381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:11,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841197676] [2021-10-13 22:32:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:11,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:11,519 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 22:32:11,520 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 22:32:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:11,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:32:11,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:11,821 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 22:32:11,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841197676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:11,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:11,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-10-13 22:32:11,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975817223] [2021-10-13 22:32:11,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:11,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:11,822 INFO L87 Difference]: Start difference. First operand 1253 states and 3458 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 22:32:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:11,973 INFO L93 Difference]: Finished difference Result 2398 states and 6444 transitions. [2021-10-13 22:32:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:32:11,974 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 22:32:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:11,983 INFO L225 Difference]: With dead ends: 2398 [2021-10-13 22:32:11,983 INFO L226 Difference]: Without dead ends: 1926 [2021-10-13 22:32:11,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:32:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-10-13 22:32:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1456. [2021-10-13 22:32:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 2.727835051546392) internal successors, (3969), 1455 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 3969 transitions. [2021-10-13 22:32:12,022 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 3969 transitions. Word has length 45 [2021-10-13 22:32:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:12,022 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 3969 transitions. [2021-10-13 22:32:12,023 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 22:32:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 3969 transitions. [2021-10-13 22:32:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:12,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:12,025 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 22:32:12,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:12,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:12,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:12,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:12,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1870617312, now seen corresponding path program 1 times [2021-10-13 22:32:12,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:12,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507439998] [2021-10-13 22:32:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:12,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:12,353 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 22:32:12,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:12,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507439998] [2021-10-13 22:32:12,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507439998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:12,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258047491] [2021-10-13 22:32:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:12,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:12,355 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 22:32:12,362 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 22:32:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:12,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:12,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:12,792 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 22:32:12,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258047491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:12,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:12,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:12,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417943563] [2021-10-13 22:32:12,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:12,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:12,794 INFO L87 Difference]: Start difference. First operand 1456 states and 3969 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 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 22:32:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:12,963 INFO L93 Difference]: Finished difference Result 1866 states and 4917 transitions. [2021-10-13 22:32:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:32:12,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 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 55 [2021-10-13 22:32:12,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:12,971 INFO L225 Difference]: With dead ends: 1866 [2021-10-13 22:32:12,971 INFO L226 Difference]: Without dead ends: 1596 [2021-10-13 22:32:12,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 137.4ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-10-13 22:32:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1531. [2021-10-13 22:32:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.6921568627450982) internal successors, (4119), 1530 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 4119 transitions. [2021-10-13 22:32:13,011 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 4119 transitions. Word has length 55 [2021-10-13 22:32:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:13,012 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 4119 transitions. [2021-10-13 22:32:13,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 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 22:32:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 4119 transitions. [2021-10-13 22:32:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:13,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:13,014 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 22:32:13,043 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 22:32:13,236 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,SelfDestructingSolverStorable11 [2021-10-13 22:32:13,237 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash -98524776, now seen corresponding path program 2 times [2021-10-13 22:32:13,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:13,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107637194] [2021-10-13 22:32:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:13,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:13,322 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 22:32:13,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:13,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107637194] [2021-10-13 22:32:13,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107637194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:13,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225925909] [2021-10-13 22:32:13,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:13,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:13,324 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 22:32:13,352 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 22:32:13,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:13,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:13,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:13,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:13,695 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 22:32:13,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225925909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:13,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:13,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:13,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455090316] [2021-10-13 22:32:13,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:13,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:13,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:13,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:13,697 INFO L87 Difference]: Start difference. First operand 1531 states and 4119 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 22:32:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:13,851 INFO L93 Difference]: Finished difference Result 1981 states and 5147 transitions. [2021-10-13 22:32:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:13,851 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 22:32:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:13,858 INFO L225 Difference]: With dead ends: 1981 [2021-10-13 22:32:13,858 INFO L226 Difference]: Without dead ends: 1711 [2021-10-13 22:32:13,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2021-10-13 22:32:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1531. [2021-10-13 22:32:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.6921568627450982) internal successors, (4119), 1530 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 4119 transitions. [2021-10-13 22:32:13,888 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 4119 transitions. Word has length 55 [2021-10-13 22:32:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:13,888 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 4119 transitions. [2021-10-13 22:32:13,888 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 22:32:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 4119 transitions. [2021-10-13 22:32:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:13,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:13,891 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 22:32:13,918 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 22:32:14,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:14,105 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash 33590920, now seen corresponding path program 3 times [2021-10-13 22:32:14,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:14,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334708517] [2021-10-13 22:32:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:14,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:14,190 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 22:32:14,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:14,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334708517] [2021-10-13 22:32:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334708517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:14,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408054939] [2021-10-13 22:32:14,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:14,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:14,192 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 22:32:14,212 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 22:32:14,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:32:14,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:14,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:14,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:14,603 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 22:32:14,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408054939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:14,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:14,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:14,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862203796] [2021-10-13 22:32:14,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:14,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:14,605 INFO L87 Difference]: Start difference. First operand 1531 states and 4119 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 22:32:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:14,848 INFO L93 Difference]: Finished difference Result 2669 states and 6993 transitions. [2021-10-13 22:32:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:14,849 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 22:32:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:14,855 INFO L225 Difference]: With dead ends: 2669 [2021-10-13 22:32:14,856 INFO L226 Difference]: Without dead ends: 2046 [2021-10-13 22:32:14,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 196.5ms TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:32:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-10-13 22:32:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1561. [2021-10-13 22:32:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 2.7205128205128206) internal successors, (4244), 1560 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 4244 transitions. [2021-10-13 22:32:14,891 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 4244 transitions. Word has length 55 [2021-10-13 22:32:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:14,892 INFO L470 AbstractCegarLoop]: Abstraction has 1561 states and 4244 transitions. [2021-10-13 22:32:14,892 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 22:32:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 4244 transitions. [2021-10-13 22:32:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:14,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:14,894 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 22:32:14,919 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 22:32:15,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:15,108 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:15,108 INFO L82 PathProgramCache]: Analyzing trace with hash -422791530, now seen corresponding path program 4 times [2021-10-13 22:32:15,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:15,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449014479] [2021-10-13 22:32:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:15,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:15,188 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 22:32:15,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:15,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449014479] [2021-10-13 22:32:15,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449014479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:15,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323635861] [2021-10-13 22:32:15,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:15,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:15,190 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 22:32:15,192 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 22:32:15,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:15,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:15,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:15,613 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 22:32:15,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323635861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:15,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:15,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 22:32:15,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781265386] [2021-10-13 22:32:15,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:15,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:15,615 INFO L87 Difference]: Start difference. First operand 1561 states and 4244 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 22:32:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:15,825 INFO L93 Difference]: Finished difference Result 2878 states and 7671 transitions. [2021-10-13 22:32:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:15,826 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 22:32:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:15,838 INFO L225 Difference]: With dead ends: 2878 [2021-10-13 22:32:15,838 INFO L226 Difference]: Without dead ends: 2608 [2021-10-13 22:32:15,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:32:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-10-13 22:32:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 1741. [2021-10-13 22:32:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 2.760344827586207) internal successors, (4803), 1740 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 4803 transitions. [2021-10-13 22:32:15,886 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 4803 transitions. Word has length 55 [2021-10-13 22:32:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:15,887 INFO L470 AbstractCegarLoop]: Abstraction has 1741 states and 4803 transitions. [2021-10-13 22:32:15,887 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 22:32:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 4803 transitions. [2021-10-13 22:32:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:15,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:15,892 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 22:32:15,919 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 22:32:16,107 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,SelfDestructingSolverStorable14 [2021-10-13 22:32:16,108 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash -357549240, now seen corresponding path program 5 times [2021-10-13 22:32:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:16,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677977802] [2021-10-13 22:32:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:16,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:16,187 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 22:32:16,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:16,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677977802] [2021-10-13 22:32:16,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677977802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:16,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906799618] [2021-10-13 22:32:16,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:16,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:16,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:16,189 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 22:32:16,190 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 22:32:16,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:32:16,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:16,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:16,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:16,568 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 22:32:16,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906799618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:16,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:16,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:16,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085129142] [2021-10-13 22:32:16,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:16,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:16,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:16,570 INFO L87 Difference]: Start difference. First operand 1741 states and 4803 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 22:32:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:16,875 INFO L93 Difference]: Finished difference Result 2821 states and 7531 transitions. [2021-10-13 22:32:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:16,876 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 22:32:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:16,882 INFO L225 Difference]: With dead ends: 2821 [2021-10-13 22:32:16,882 INFO L226 Difference]: Without dead ends: 2246 [2021-10-13 22:32:16,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 244.4ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-10-13 22:32:16,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1656. [2021-10-13 22:32:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1655 states have (on average 2.730513595166163) internal successors, (4519), 1655 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 4519 transitions. [2021-10-13 22:32:16,916 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 4519 transitions. Word has length 55 [2021-10-13 22:32:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:16,917 INFO L470 AbstractCegarLoop]: Abstraction has 1656 states and 4519 transitions. [2021-10-13 22:32:16,917 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 22:32:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 4519 transitions. [2021-10-13 22:32:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:16,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:16,920 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 22:32:16,941 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 22:32:17,139 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,SelfDestructingSolverStorable15 [2021-10-13 22:32:17,139 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1389294784, now seen corresponding path program 6 times [2021-10-13 22:32:17,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:17,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326145443] [2021-10-13 22:32:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:17,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:17,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:17,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326145443] [2021-10-13 22:32:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326145443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:17,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964735115] [2021-10-13 22:32:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:17,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:17,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:17,238 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 22:32:17,240 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 22:32:17,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 22:32:17,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:17,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:17,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:17,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964735115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:17,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:17,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-10-13 22:32:17,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205526868] [2021-10-13 22:32:17,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:17,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:17,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:17,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:17,828 INFO L87 Difference]: Start difference. First operand 1656 states and 4519 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:17,987 INFO L93 Difference]: Finished difference Result 2561 states and 6649 transitions. [2021-10-13 22:32:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:17,988 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:32:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:17,993 INFO L225 Difference]: With dead ends: 2561 [2021-10-13 22:32:17,993 INFO L226 Difference]: Without dead ends: 2212 [2021-10-13 22:32:17,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:32:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-10-13 22:32:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1658. [2021-10-13 22:32:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1657 states have (on average 2.7296318648159326) internal successors, (4523), 1657 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 4523 transitions. [2021-10-13 22:32:18,026 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 4523 transitions. Word has length 55 [2021-10-13 22:32:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:18,027 INFO L470 AbstractCegarLoop]: Abstraction has 1658 states and 4523 transitions. [2021-10-13 22:32:18,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 4523 transitions. [2021-10-13 22:32:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:18,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:18,029 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 22:32:18,058 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 22:32:18,257 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,SelfDestructingSolverStorable16 [2021-10-13 22:32:18,258 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:18,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:18,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1593141892, now seen corresponding path program 7 times [2021-10-13 22:32:18,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:18,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85222650] [2021-10-13 22:32:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:18,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:18,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:18,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85222650] [2021-10-13 22:32:18,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85222650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918734783] [2021-10-13 22:32:18,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:18,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:18,346 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 22:32:18,354 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 22:32:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:18,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:18,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:18,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918734783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:18,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 22:32:18,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667598546] [2021-10-13 22:32:18,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:18,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:18,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:18,810 INFO L87 Difference]: Start difference. First operand 1658 states and 4523 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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 22:32:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:18,904 INFO L93 Difference]: Finished difference Result 2311 states and 5957 transitions. [2021-10-13 22:32:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 22:32:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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 22:32:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:18,908 INFO L225 Difference]: With dead ends: 2311 [2021-10-13 22:32:18,908 INFO L226 Difference]: Without dead ends: 2026 [2021-10-13 22:32:18,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-10-13 22:32:18,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1638. [2021-10-13 22:32:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 2.7385461209529627) internal successors, (4483), 1637 states have internal predecessors, (4483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 4483 transitions. [2021-10-13 22:32:18,941 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 4483 transitions. Word has length 55 [2021-10-13 22:32:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:18,941 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 4483 transitions. [2021-10-13 22:32:18,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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 22:32:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 4483 transitions. [2021-10-13 22:32:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:18,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:18,944 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 22:32:18,968 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 22:32:19,165 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,SelfDestructingSolverStorable17 [2021-10-13 22:32:19,166 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash -37142900, now seen corresponding path program 8 times [2021-10-13 22:32:19,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:19,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348815167] [2021-10-13 22:32:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:19,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:19,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:19,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348815167] [2021-10-13 22:32:19,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348815167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:19,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328352574] [2021-10-13 22:32:19,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:19,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:19,250 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 22:32:19,286 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 22:32:19,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:19,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:19,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:19,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:19,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328352574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:19,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:19,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-13 22:32:19,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811591013] [2021-10-13 22:32:19,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 22:32:19,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 22:32:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:32:19,848 INFO L87 Difference]: Start difference. First operand 1638 states and 4483 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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 22:32:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:20,014 INFO L93 Difference]: Finished difference Result 2246 states and 5827 transitions. [2021-10-13 22:32:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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 22:32:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:20,018 INFO L225 Difference]: With dead ends: 2246 [2021-10-13 22:32:20,019 INFO L226 Difference]: Without dead ends: 1961 [2021-10-13 22:32:20,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 155.2ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-10-13 22:32:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1613. [2021-10-13 22:32:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 2.75) internal successors, (4433), 1612 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 4433 transitions. [2021-10-13 22:32:20,051 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 4433 transitions. Word has length 55 [2021-10-13 22:32:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:20,052 INFO L470 AbstractCegarLoop]: Abstraction has 1613 states and 4433 transitions. [2021-10-13 22:32:20,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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 22:32:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 4433 transitions. [2021-10-13 22:32:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:20,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:20,054 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 22:32:20,083 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 22:32:20,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:20,267 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1841696962, now seen corresponding path program 9 times [2021-10-13 22:32:20,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:20,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247854636] [2021-10-13 22:32:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:20,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:20,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:20,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247854636] [2021-10-13 22:32:20,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247854636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:20,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929188140] [2021-10-13 22:32:20,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:20,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:20,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:20,334 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 22:32:20,344 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 22:32:20,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:32:20,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:20,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:32:20,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:20,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929188140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:20,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:20,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 22:32:20,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505074773] [2021-10-13 22:32:20,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 22:32:20,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 22:32:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:32:20,828 INFO L87 Difference]: Start difference. First operand 1613 states and 4433 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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 22:32:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:20,972 INFO L93 Difference]: Finished difference Result 3193 states and 8511 transitions. [2021-10-13 22:32:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:32:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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 22:32:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:20,979 INFO L225 Difference]: With dead ends: 3193 [2021-10-13 22:32:20,979 INFO L226 Difference]: Without dead ends: 2893 [2021-10-13 22:32:20,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:32:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-10-13 22:32:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1853. [2021-10-13 22:32:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 2.8115550755939527) internal successors, (5207), 1852 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 5207 transitions. [2021-10-13 22:32:21,048 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 5207 transitions. Word has length 55 [2021-10-13 22:32:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:21,048 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 5207 transitions. [2021-10-13 22:32:21,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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 22:32:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 5207 transitions. [2021-10-13 22:32:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 22:32:21,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:21,051 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 22:32:21,081 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 22:32:21,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-13 22:32:21,267 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:21,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1624042451, now seen corresponding path program 10 times [2021-10-13 22:32:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:21,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503143843] [2021-10-13 22:32:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:21,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:21,341 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 22:32:21,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:21,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503143843] [2021-10-13 22:32:21,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503143843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355503890] [2021-10-13 22:32:21,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:21,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:21,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:21,343 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 22:32:21,345 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 22:32:21,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:21,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:21,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:32:21,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:21,907 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 22:32:21,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355503890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:21,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-13 22:32:21,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105461095] [2021-10-13 22:32:21,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:21,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:21,910 INFO L87 Difference]: Start difference. First operand 1853 states and 5207 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 22:32:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:22,137 INFO L93 Difference]: Finished difference Result 3208 states and 8677 transitions. [2021-10-13 22:32:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:22,138 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 22:32:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:22,143 INFO L225 Difference]: With dead ends: 3208 [2021-10-13 22:32:22,143 INFO L226 Difference]: Without dead ends: 2426 [2021-10-13 22:32:22,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 174.0ms TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:32:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-10-13 22:32:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1856. [2021-10-13 22:32:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 2.7326145552560646) internal successors, (5069), 1855 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 5069 transitions. [2021-10-13 22:32:22,182 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 5069 transitions. Word has length 55 [2021-10-13 22:32:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:22,182 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 5069 transitions. [2021-10-13 22:32:22,182 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 22:32:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 5069 transitions. [2021-10-13 22:32:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:22,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:22,186 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 22:32:22,215 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 22:32:22,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:22,395 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash 858077457, now seen corresponding path program 11 times [2021-10-13 22:32:22,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:22,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701626231] [2021-10-13 22:32:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:22,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:22,510 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 22:32:22,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:22,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701626231] [2021-10-13 22:32:22,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701626231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:22,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034703442] [2021-10-13 22:32:22,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:22,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:22,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:22,512 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 22:32:22,541 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 22:32:22,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:22,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:22,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:22,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:23,231 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 22:32:23,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034703442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:23,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:23,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:23,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496179626] [2021-10-13 22:32:23,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:23,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:23,233 INFO L87 Difference]: Start difference. First operand 1856 states and 5069 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 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 22:32:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:23,418 INFO L93 Difference]: Finished difference Result 2316 states and 6117 transitions. [2021-10-13 22:32:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:32:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 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 65 [2021-10-13 22:32:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:23,421 INFO L225 Difference]: With dead ends: 2316 [2021-10-13 22:32:23,421 INFO L226 Difference]: Without dead ends: 2046 [2021-10-13 22:32:23,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 169.8ms TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-10-13 22:32:23,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1931. [2021-10-13 22:32:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 2.704145077720207) internal successors, (5219), 1930 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 5219 transitions. [2021-10-13 22:32:23,462 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 5219 transitions. Word has length 65 [2021-10-13 22:32:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:23,462 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 5219 transitions. [2021-10-13 22:32:23,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 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 22:32:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 5219 transitions. [2021-10-13 22:32:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:23,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:23,466 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 22:32:23,491 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 22:32:23,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:23,687 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:23,688 INFO L82 PathProgramCache]: Analyzing trace with hash 902265289, now seen corresponding path program 12 times [2021-10-13 22:32:23,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:23,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807158999] [2021-10-13 22:32:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:23,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:23,783 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 22:32:23,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:23,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807158999] [2021-10-13 22:32:23,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807158999] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:23,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219551107] [2021-10-13 22:32:23,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:23,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:23,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:23,785 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 22:32:23,795 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 22:32:24,126 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:24,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:24,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:24,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:24,360 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 22:32:24,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219551107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:24,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:24,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:24,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581152462] [2021-10-13 22:32:24,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:24,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:24,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:24,362 INFO L87 Difference]: Start difference. First operand 1931 states and 5219 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 22:32:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:24,529 INFO L93 Difference]: Finished difference Result 2481 states and 6447 transitions. [2021-10-13 22:32:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:24,529 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 22:32:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:24,532 INFO L225 Difference]: With dead ends: 2481 [2021-10-13 22:32:24,532 INFO L226 Difference]: Without dead ends: 2211 [2021-10-13 22:32:24,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-10-13 22:32:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1931. [2021-10-13 22:32:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 2.704145077720207) internal successors, (5219), 1930 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 5219 transitions. [2021-10-13 22:32:24,564 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 5219 transitions. Word has length 65 [2021-10-13 22:32:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:24,564 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 5219 transitions. [2021-10-13 22:32:24,564 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 22:32:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 5219 transitions. [2021-10-13 22:32:24,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:24,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:24,567 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 22:32:24,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-13 22:32:24,791 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,SelfDestructingSolverStorable22 [2021-10-13 22:32:24,791 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:24,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1642595655, now seen corresponding path program 13 times [2021-10-13 22:32:24,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:24,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872822525] [2021-10-13 22:32:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:24,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:24,897 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 22:32:24,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:24,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872822525] [2021-10-13 22:32:24,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872822525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:24,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709684117] [2021-10-13 22:32:24,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:24,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:24,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:24,898 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 22:32:24,935 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 22:32:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:25,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:25,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:25,541 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 22:32:25,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709684117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:25,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:25,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:25,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881455354] [2021-10-13 22:32:25,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:25,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:25,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:25,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:25,543 INFO L87 Difference]: Start difference. First operand 1931 states and 5219 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 22:32:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:25,767 INFO L93 Difference]: Finished difference Result 2566 states and 6617 transitions. [2021-10-13 22:32:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:25,767 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 22:32:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:25,770 INFO L225 Difference]: With dead ends: 2566 [2021-10-13 22:32:25,770 INFO L226 Difference]: Without dead ends: 2296 [2021-10-13 22:32:25,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 200.1ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2021-10-13 22:32:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1931. [2021-10-13 22:32:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 2.704145077720207) internal successors, (5219), 1930 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 5219 transitions. [2021-10-13 22:32:25,800 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 5219 transitions. Word has length 65 [2021-10-13 22:32:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:25,800 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 5219 transitions. [2021-10-13 22:32:25,800 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 22:32:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 5219 transitions. [2021-10-13 22:32:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:25,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:25,803 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 22:32:25,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 22:32:26,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:26,026 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash -732698297, now seen corresponding path program 14 times [2021-10-13 22:32:26,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:26,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844030234] [2021-10-13 22:32:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:26,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:26,124 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 22:32:26,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:26,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844030234] [2021-10-13 22:32:26,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844030234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:26,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623254460] [2021-10-13 22:32:26,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:26,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:26,125 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 22:32:26,163 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 22:32:26,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:26,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:26,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:26,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:26,729 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 22:32:26,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623254460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:26,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:26,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:26,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183803365] [2021-10-13 22:32:26,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:26,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:26,731 INFO L87 Difference]: Start difference. First operand 1931 states and 5219 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 22:32:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:26,917 INFO L93 Difference]: Finished difference Result 2496 states and 6477 transitions. [2021-10-13 22:32:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:26,918 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 22:32:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:26,921 INFO L225 Difference]: With dead ends: 2496 [2021-10-13 22:32:26,921 INFO L226 Difference]: Without dead ends: 2226 [2021-10-13 22:32:26,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 169.7ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:32:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-10-13 22:32:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1931. [2021-10-13 22:32:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 2.704145077720207) internal successors, (5219), 1930 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 5219 transitions. [2021-10-13 22:32:26,955 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 5219 transitions. Word has length 65 [2021-10-13 22:32:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:26,955 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 5219 transitions. [2021-10-13 22:32:26,955 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 22:32:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 5219 transitions. [2021-10-13 22:32:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:26,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:26,958 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 22:32:26,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 22:32:27,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:27,179 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:27,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash -600582601, now seen corresponding path program 15 times [2021-10-13 22:32:27,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:27,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681500565] [2021-10-13 22:32:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:27,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:27,311 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 22:32:27,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:27,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681500565] [2021-10-13 22:32:27,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681500565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927644281] [2021-10-13 22:32:27,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:27,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:27,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:27,312 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 22:32:27,330 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 22:32:27,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:27,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:27,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:27,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:27,930 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 22:32:27,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927644281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:27,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:27,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445719239] [2021-10-13 22:32:27,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:27,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:27,933 INFO L87 Difference]: Start difference. First operand 1931 states and 5219 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 22:32:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:28,224 INFO L93 Difference]: Finished difference Result 3074 states and 8103 transitions. [2021-10-13 22:32:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:28,224 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 22:32:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:28,227 INFO L225 Difference]: With dead ends: 3074 [2021-10-13 22:32:28,227 INFO L226 Difference]: Without dead ends: 2451 [2021-10-13 22:32:28,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 251.6ms TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-10-13 22:32:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1961. [2021-10-13 22:32:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 2.726530612244898) internal successors, (5344), 1960 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 5344 transitions. [2021-10-13 22:32:28,259 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 5344 transitions. Word has length 65 [2021-10-13 22:32:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:28,259 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 5344 transitions. [2021-10-13 22:32:28,259 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 22:32:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 5344 transitions. [2021-10-13 22:32:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:28,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:28,262 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 22:32:28,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-13 22:32:28,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:28,471 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:28,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1056965051, now seen corresponding path program 16 times [2021-10-13 22:32:28,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:28,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888932887] [2021-10-13 22:32:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:28,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:28,553 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 22:32:28,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:28,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888932887] [2021-10-13 22:32:28,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888932887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:28,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192418521] [2021-10-13 22:32:28,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:28,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:28,555 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 22:32:28,564 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 22:32:29,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:29,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:29,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:29,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:29,183 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 22:32:29,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192418521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:29,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:29,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 22:32:29,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404243111] [2021-10-13 22:32:29,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:29,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:29,185 INFO L87 Difference]: Start difference. First operand 1961 states and 5344 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 22:32:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:29,402 INFO L93 Difference]: Finished difference Result 3278 states and 8771 transitions. [2021-10-13 22:32:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:29,402 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 22:32:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:29,407 INFO L225 Difference]: With dead ends: 3278 [2021-10-13 22:32:29,407 INFO L226 Difference]: Without dead ends: 3008 [2021-10-13 22:32:29,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 175.0ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:32:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-10-13 22:32:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2141. [2021-10-13 22:32:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2140 states have (on average 2.758411214953271) internal successors, (5903), 2140 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 5903 transitions. [2021-10-13 22:32:29,466 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 5903 transitions. Word has length 65 [2021-10-13 22:32:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:29,466 INFO L470 AbstractCegarLoop]: Abstraction has 2141 states and 5903 transitions. [2021-10-13 22:32:29,466 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 22:32:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 5903 transitions. [2021-10-13 22:32:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:29,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:29,470 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 22:32:29,497 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 22:32:29,691 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,SelfDestructingSolverStorable26 [2021-10-13 22:32:29,691 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash -991722761, now seen corresponding path program 17 times [2021-10-13 22:32:29,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:29,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069722107] [2021-10-13 22:32:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:29,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:29,781 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 22:32:29,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069722107] [2021-10-13 22:32:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069722107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125931243] [2021-10-13 22:32:29,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:29,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:29,782 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 22:32:29,812 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 22:32:30,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:30,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:30,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:30,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:30,431 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 22:32:30,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125931243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:30,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:30,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421585476] [2021-10-13 22:32:30,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:30,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:30,432 INFO L87 Difference]: Start difference. First operand 2141 states and 5903 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 22:32:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:30,784 INFO L93 Difference]: Finished difference Result 3221 states and 8631 transitions. [2021-10-13 22:32:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:30,785 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 22:32:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:30,789 INFO L225 Difference]: With dead ends: 3221 [2021-10-13 22:32:30,789 INFO L226 Difference]: Without dead ends: 2646 [2021-10-13 22:32:30,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 273.3ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-10-13 22:32:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2056. [2021-10-13 22:32:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2055 states have (on average 2.7343065693430657) internal successors, (5619), 2055 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 5619 transitions. [2021-10-13 22:32:30,824 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 5619 transitions. Word has length 65 [2021-10-13 22:32:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:30,824 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 5619 transitions. [2021-10-13 22:32:30,824 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 22:32:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 5619 transitions. [2021-10-13 22:32:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:30,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:30,828 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 22:32:30,853 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 22:32:31,050 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,SelfDestructingSolverStorable27 [2021-10-13 22:32:31,051 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:31,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1975550993, now seen corresponding path program 18 times [2021-10-13 22:32:31,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:31,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259633156] [2021-10-13 22:32:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:31,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:31,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:31,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259633156] [2021-10-13 22:32:31,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259633156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965424536] [2021-10-13 22:32:31,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:31,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:31,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:31,170 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 22:32:31,172 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 22:32:31,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:32:31,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:31,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:31,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:31,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965424536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:31,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:31,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2021-10-13 22:32:31,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769875505] [2021-10-13 22:32:31,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:31,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:31,999 INFO L87 Difference]: Start difference. First operand 2056 states and 5619 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 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 22:32:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:32,167 INFO L93 Difference]: Finished difference Result 3061 states and 7949 transitions. [2021-10-13 22:32:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 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 65 [2021-10-13 22:32:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:32,171 INFO L225 Difference]: With dead ends: 3061 [2021-10-13 22:32:32,171 INFO L226 Difference]: Without dead ends: 2712 [2021-10-13 22:32:32,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:32:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-10-13 22:32:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2058. [2021-10-13 22:32:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2057 states have (on average 2.733592610597958) internal successors, (5623), 2057 states have internal predecessors, (5623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 5623 transitions. [2021-10-13 22:32:32,204 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 5623 transitions. Word has length 65 [2021-10-13 22:32:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:32,204 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 5623 transitions. [2021-10-13 22:32:32,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 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 22:32:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 5623 transitions. [2021-10-13 22:32:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:32,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:32,207 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 22:32:32,235 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 22:32:32,430 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,SelfDestructingSolverStorable28 [2021-10-13 22:32:32,430 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1892576043, now seen corresponding path program 19 times [2021-10-13 22:32:32,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:32,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439452324] [2021-10-13 22:32:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:32,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:32,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:32,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439452324] [2021-10-13 22:32:32,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439452324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:32,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86978299] [2021-10-13 22:32:32,526 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:32,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:32,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:32,527 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 22:32:32,528 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 22:32:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:33,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:33,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:33,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86978299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:33,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:33,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080137523] [2021-10-13 22:32:33,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:33,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:33,314 INFO L87 Difference]: Start difference. First operand 2058 states and 5623 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:33,441 INFO L93 Difference]: Finished difference Result 2861 states and 7357 transitions. [2021-10-13 22:32:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:32:33,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:33,446 INFO L225 Difference]: With dead ends: 2861 [2021-10-13 22:32:33,446 INFO L226 Difference]: Without dead ends: 2576 [2021-10-13 22:32:33,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:32:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-10-13 22:32:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2038. [2021-10-13 22:32:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 2.74079528718704) internal successors, (5583), 2037 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 5583 transitions. [2021-10-13 22:32:33,493 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 5583 transitions. Word has length 65 [2021-10-13 22:32:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:33,493 INFO L470 AbstractCegarLoop]: Abstraction has 2038 states and 5583 transitions. [2021-10-13 22:32:33,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 5583 transitions. [2021-10-13 22:32:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:33,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:33,496 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 22:32:33,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:33,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,711 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:33,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1067909061, now seen corresponding path program 20 times [2021-10-13 22:32:33,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:33,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727587445] [2021-10-13 22:32:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:33,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:33,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:33,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727587445] [2021-10-13 22:32:33,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727587445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413327462] [2021-10-13 22:32:33,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:33,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:33,826 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 22:32:33,829 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 22:32:34,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:34,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:34,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:34,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:34,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413327462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:34,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-13 22:32:34,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628576596] [2021-10-13 22:32:34,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:34,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:34,610 INFO L87 Difference]: Start difference. First operand 2038 states and 5583 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 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 22:32:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:34,811 INFO L93 Difference]: Finished difference Result 2796 states and 7227 transitions. [2021-10-13 22:32:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:32:34,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 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 22:32:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:34,815 INFO L225 Difference]: With dead ends: 2796 [2021-10-13 22:32:34,816 INFO L226 Difference]: Without dead ends: 2511 [2021-10-13 22:32:34,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-10-13 22:32:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2013. [2021-10-13 22:32:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 2012 states have (on average 2.75) internal successors, (5533), 2012 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 5533 transitions. [2021-10-13 22:32:34,847 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 5533 transitions. Word has length 65 [2021-10-13 22:32:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:34,847 INFO L470 AbstractCegarLoop]: Abstraction has 2013 states and 5533 transitions. [2021-10-13 22:32:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 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 22:32:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 5533 transitions. [2021-10-13 22:32:34,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:34,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:34,851 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 22:32:34,871 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 22:32:35,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:35,061 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:35,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1253177965, now seen corresponding path program 21 times [2021-10-13 22:32:35,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:35,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346065065] [2021-10-13 22:32:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:35,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:35,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:35,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346065065] [2021-10-13 22:32:35,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346065065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541871409] [2021-10-13 22:32:35,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:35,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:35,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:35,157 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 22:32:35,158 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 22:32:35,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:32:35,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:35,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:35,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:35,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541871409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:35,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:35,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:35,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867215610] [2021-10-13 22:32:35,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:35,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:35,937 INFO L87 Difference]: Start difference. First operand 2013 states and 5533 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:36,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:36,086 INFO L93 Difference]: Finished difference Result 2721 states and 7077 transitions. [2021-10-13 22:32:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:32:36,087 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:36,090 INFO L225 Difference]: With dead ends: 2721 [2021-10-13 22:32:36,091 INFO L226 Difference]: Without dead ends: 2436 [2021-10-13 22:32:36,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:32:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-10-13 22:32:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 1988. [2021-10-13 22:32:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1987 states have (on average 2.7594363361852037) internal successors, (5483), 1987 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 5483 transitions. [2021-10-13 22:32:36,120 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 5483 transitions. Word has length 65 [2021-10-13 22:32:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:36,121 INFO L470 AbstractCegarLoop]: Abstraction has 1988 states and 5483 transitions. [2021-10-13 22:32:36,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 5483 transitions. [2021-10-13 22:32:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:36,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:36,124 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 22:32:36,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-13 22:32:36,347 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,SelfDestructingSolverStorable31 [2021-10-13 22:32:36,348 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1485790339, now seen corresponding path program 22 times [2021-10-13 22:32:36,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:36,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83546522] [2021-10-13 22:32:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:36,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:36,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:36,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83546522] [2021-10-13 22:32:36,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83546522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:36,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810653418] [2021-10-13 22:32:36,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:36,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:36,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:36,459 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 22:32:36,460 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 22:32:37,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:37,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:37,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:37,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:37,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810653418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:37,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-13 22:32:37,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705378264] [2021-10-13 22:32:37,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:32:37,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:32:37,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:32:37,335 INFO L87 Difference]: Start difference. First operand 1988 states and 5483 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 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 22:32:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:37,532 INFO L93 Difference]: Finished difference Result 2646 states and 6927 transitions. [2021-10-13 22:32:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:37,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 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 22:32:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:37,535 INFO L225 Difference]: With dead ends: 2646 [2021-10-13 22:32:37,535 INFO L226 Difference]: Without dead ends: 2361 [2021-10-13 22:32:37,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 188.3ms TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:32:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-10-13 22:32:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1963. [2021-10-13 22:32:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1962 states have (on average 2.7691131498470947) internal successors, (5433), 1962 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 5433 transitions. [2021-10-13 22:32:37,561 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 5433 transitions. Word has length 65 [2021-10-13 22:32:37,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:37,561 INFO L470 AbstractCegarLoop]: Abstraction has 1963 states and 5433 transitions. [2021-10-13 22:32:37,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 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 22:32:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 5433 transitions. [2021-10-13 22:32:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 22:32:37,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:37,575 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 22:32:37,596 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 22:32:37,787 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,SelfDestructingSolverStorable32 [2021-10-13 22:32:37,787 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1004622895, now seen corresponding path program 23 times [2021-10-13 22:32:37,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:37,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047169337] [2021-10-13 22:32:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:37,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:37,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:37,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047169337] [2021-10-13 22:32:37,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047169337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687829894] [2021-10-13 22:32:37,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:37,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:37,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:37,871 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 22:32:37,881 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 22:32:38,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:32:38,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:38,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:38,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:38,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687829894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:38,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:38,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 22:32:38,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654073700] [2021-10-13 22:32:38,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 22:32:38,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 22:32:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:32:38,661 INFO L87 Difference]: Start difference. First operand 1963 states and 5433 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:38,841 INFO L93 Difference]: Finished difference Result 3593 states and 9611 transitions. [2021-10-13 22:32:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:38,841 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:38,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:38,845 INFO L225 Difference]: With dead ends: 3593 [2021-10-13 22:32:38,845 INFO L226 Difference]: Without dead ends: 3293 [2021-10-13 22:32:38,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-10-13 22:32:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2203. [2021-10-13 22:32:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2202 states have (on average 2.818801089918256) internal successors, (6207), 2202 states have internal predecessors, (6207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 6207 transitions. [2021-10-13 22:32:38,882 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 6207 transitions. Word has length 65 [2021-10-13 22:32:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:38,882 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 6207 transitions. [2021-10-13 22:32:38,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 22:32:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 6207 transitions. [2021-10-13 22:32:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [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 [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 22:32:38,912 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 22:32:39,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:39,109 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1222277406, now seen corresponding path program 24 times [2021-10-13 22:32:39,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:39,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519579225] [2021-10-13 22:32:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:39,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:39,191 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 22:32:39,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:39,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519579225] [2021-10-13 22:32:39,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519579225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:39,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827494009] [2021-10-13 22:32:39,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:39,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:39,193 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 22:32:39,220 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 22:32:39,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:39,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:39,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:39,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:40,016 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 22:32:40,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827494009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:40,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:40,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-13 22:32:40,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532360456] [2021-10-13 22:32:40,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:40,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:40,018 INFO L87 Difference]: Start difference. First operand 2203 states and 6207 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 22:32:40,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:40,318 INFO L93 Difference]: Finished difference Result 3608 states and 9777 transitions. [2021-10-13 22:32:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:32:40,319 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 22:32:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:40,322 INFO L225 Difference]: With dead ends: 3608 [2021-10-13 22:32:40,322 INFO L226 Difference]: Without dead ends: 2826 [2021-10-13 22:32:40,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 270.7ms TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-10-13 22:32:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2256. [2021-10-13 22:32:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 2.73569844789357) internal successors, (6169), 2255 states have internal predecessors, (6169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 6169 transitions. [2021-10-13 22:32:40,354 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 6169 transitions. Word has length 65 [2021-10-13 22:32:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:40,354 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 6169 transitions. [2021-10-13 22:32:40,354 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 22:32:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 6169 transitions. [2021-10-13 22:32:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:40,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:40,358 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 22:32:40,377 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 22:32:40,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,562 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1062456834, now seen corresponding path program 25 times [2021-10-13 22:32:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:40,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755985070] [2021-10-13 22:32:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:40,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:40,701 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 22:32:40,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:40,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755985070] [2021-10-13 22:32:40,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755985070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:40,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690602551] [2021-10-13 22:32:40,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:40,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:40,702 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 22:32:40,703 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 22:32:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:41,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:41,673 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 22:32:41,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690602551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:41,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:41,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:41,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445607283] [2021-10-13 22:32:41,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:41,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:41,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:41,674 INFO L87 Difference]: Start difference. First operand 2256 states and 6169 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 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 22:32:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:41,850 INFO L93 Difference]: Finished difference Result 2766 states and 7317 transitions. [2021-10-13 22:32:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:41,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 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 75 [2021-10-13 22:32:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:41,868 INFO L225 Difference]: With dead ends: 2766 [2021-10-13 22:32:41,869 INFO L226 Difference]: Without dead ends: 2496 [2021-10-13 22:32:41,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-10-13 22:32:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2331. [2021-10-13 22:32:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2330 states have (on average 2.7120171673819744) internal successors, (6319), 2330 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 6319 transitions. [2021-10-13 22:32:41,891 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 6319 transitions. Word has length 75 [2021-10-13 22:32:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:41,891 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 6319 transitions. [2021-10-13 22:32:41,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 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 22:32:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 6319 transitions. [2021-10-13 22:32:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:41,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:41,895 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 22:32:41,917 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 22:32:42,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:42,109 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:42,110 INFO L82 PathProgramCache]: Analyzing trace with hash 277252282, now seen corresponding path program 26 times [2021-10-13 22:32:42,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:42,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067989935] [2021-10-13 22:32:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:42,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:42,237 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 22:32:42,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:42,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067989935] [2021-10-13 22:32:42,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067989935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:42,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187020068] [2021-10-13 22:32:42,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:42,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:42,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:42,239 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 22:32:42,241 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 22:32:42,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:42,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:42,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:42,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:43,273 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 22:32:43,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187020068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:43,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:43,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:43,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38553380] [2021-10-13 22:32:43,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:43,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:43,275 INFO L87 Difference]: Start difference. First operand 2331 states and 6319 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 22:32:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:43,458 INFO L93 Difference]: Finished difference Result 2981 states and 7747 transitions. [2021-10-13 22:32:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:43,459 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 22:32:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:43,462 INFO L225 Difference]: With dead ends: 2981 [2021-10-13 22:32:43,462 INFO L226 Difference]: Without dead ends: 2711 [2021-10-13 22:32:43,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 185.3ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:32:43,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2021-10-13 22:32:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2331. [2021-10-13 22:32:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2330 states have (on average 2.7120171673819744) internal successors, (6319), 2330 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 6319 transitions. [2021-10-13 22:32:43,488 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 6319 transitions. Word has length 75 [2021-10-13 22:32:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:43,488 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 6319 transitions. [2021-10-13 22:32:43,488 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 22:32:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 6319 transitions. [2021-10-13 22:32:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:43,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:43,492 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 22:32:43,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-13 22:32:43,715 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,SelfDestructingSolverStorable36 [2021-10-13 22:32:43,716 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:43,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1151245738, now seen corresponding path program 27 times [2021-10-13 22:32:43,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:43,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763976770] [2021-10-13 22:32:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:43,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:43,868 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 22:32:43,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:43,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763976770] [2021-10-13 22:32:43,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763976770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:43,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910875397] [2021-10-13 22:32:43,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:43,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:43,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:43,871 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 22:32:43,891 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 22:32:44,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:44,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:44,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:44,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:44,933 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 22:32:44,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910875397] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:44,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:44,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:44,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148463396] [2021-10-13 22:32:44,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:44,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:44,934 INFO L87 Difference]: Start difference. First operand 2331 states and 6319 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:45,186 INFO L93 Difference]: Finished difference Result 3116 states and 8017 transitions. [2021-10-13 22:32:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:32:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:45,190 INFO L225 Difference]: With dead ends: 3116 [2021-10-13 22:32:45,190 INFO L226 Difference]: Without dead ends: 2846 [2021-10-13 22:32:45,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-10-13 22:32:45,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2331. [2021-10-13 22:32:45,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2330 states have (on average 2.7120171673819744) internal successors, (6319), 2330 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 6319 transitions. [2021-10-13 22:32:45,228 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 6319 transitions. Word has length 75 [2021-10-13 22:32:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:45,228 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 6319 transitions. [2021-10-13 22:32:45,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 6319 transitions. [2021-10-13 22:32:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:45,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:45,232 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 22:32:45,261 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 22:32:45,455 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,SelfDestructingSolverStorable37 [2021-10-13 22:32:45,455 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1646539448, now seen corresponding path program 28 times [2021-10-13 22:32:45,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:45,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859459800] [2021-10-13 22:32:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:45,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:45,567 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 22:32:45,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:45,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859459800] [2021-10-13 22:32:45,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859459800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:45,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969653271] [2021-10-13 22:32:45,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:45,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:45,569 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 22:32:45,600 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 22:32:46,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:46,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:46,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:46,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:46,609 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 22:32:46,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969653271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:46,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:46,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:46,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124383946] [2021-10-13 22:32:46,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:46,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:46,610 INFO L87 Difference]: Start difference. First operand 2331 states and 6319 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 22:32:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:46,843 INFO L93 Difference]: Finished difference Result 3046 states and 7877 transitions. [2021-10-13 22:32:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:46,843 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 22:32:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:46,846 INFO L225 Difference]: With dead ends: 3046 [2021-10-13 22:32:46,846 INFO L226 Difference]: Without dead ends: 2776 [2021-10-13 22:32:46,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:32:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-10-13 22:32:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2331. [2021-10-13 22:32:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2330 states have (on average 2.7120171673819744) internal successors, (6319), 2330 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 6319 transitions. [2021-10-13 22:32:46,875 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 6319 transitions. Word has length 75 [2021-10-13 22:32:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:46,875 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 6319 transitions. [2021-10-13 22:32:46,875 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 22:32:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 6319 transitions. [2021-10-13 22:32:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:46,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:46,878 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 22:32:46,896 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 22:32:47,079 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,SelfDestructingSolverStorable38 [2021-10-13 22:32:47,079 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash -898321496, now seen corresponding path program 29 times [2021-10-13 22:32:47,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:47,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809086496] [2021-10-13 22:32:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:47,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:47,189 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 22:32:47,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:47,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809086496] [2021-10-13 22:32:47,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809086496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:47,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315896243] [2021-10-13 22:32:47,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:47,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:47,190 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 22:32:47,190 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 22:32:47,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:32:47,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:47,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:47,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:48,197 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 22:32:48,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315896243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:48,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:48,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:48,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089692662] [2021-10-13 22:32:48,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:48,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:48,198 INFO L87 Difference]: Start difference. First operand 2331 states and 6319 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:48,482 INFO L93 Difference]: Finished difference Result 2971 states and 7727 transitions. [2021-10-13 22:32:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:32:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:48,485 INFO L225 Difference]: With dead ends: 2971 [2021-10-13 22:32:48,485 INFO L226 Difference]: Without dead ends: 2701 [2021-10-13 22:32:48,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 263.2ms TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-10-13 22:32:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2331. [2021-10-13 22:32:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2330 states have (on average 2.7120171673819744) internal successors, (6319), 2330 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 6319 transitions. [2021-10-13 22:32:48,518 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 6319 transitions. Word has length 75 [2021-10-13 22:32:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:48,518 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 6319 transitions. [2021-10-13 22:32:48,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 6319 transitions. [2021-10-13 22:32:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:48,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:48,521 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 22:32:48,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-13 22:32:48,746 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,SelfDestructingSolverStorable39 [2021-10-13 22:32:48,746 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash 11575862, now seen corresponding path program 30 times [2021-10-13 22:32:48,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:48,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082136385] [2021-10-13 22:32:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:48,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:48,849 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 22:32:48,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:48,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082136385] [2021-10-13 22:32:48,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082136385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:48,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578289290] [2021-10-13 22:32:48,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:48,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:48,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:48,851 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 22:32:48,860 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 22:32:49,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:32:49,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:49,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:32:49,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:49,883 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 22:32:49,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578289290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:49,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:49,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:49,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056527047] [2021-10-13 22:32:49,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:49,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:49,884 INFO L87 Difference]: Start difference. First operand 2331 states and 6319 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 22:32:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:50,171 INFO L93 Difference]: Finished difference Result 2896 states and 7577 transitions. [2021-10-13 22:32:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:50,171 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 22:32:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:50,175 INFO L225 Difference]: With dead ends: 2896 [2021-10-13 22:32:50,176 INFO L226 Difference]: Without dead ends: 2626 [2021-10-13 22:32:50,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 233.9ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-10-13 22:32:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2331. [2021-10-13 22:32:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2330 states have (on average 2.7120171673819744) internal successors, (6319), 2330 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 6319 transitions. [2021-10-13 22:32:50,237 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 6319 transitions. Word has length 75 [2021-10-13 22:32:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:50,238 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 6319 transitions. [2021-10-13 22:32:50,238 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 22:32:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 6319 transitions. [2021-10-13 22:32:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:50,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:50,241 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 22:32:50,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:50,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:50,455 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:50,456 INFO L82 PathProgramCache]: Analyzing trace with hash 143691558, now seen corresponding path program 31 times [2021-10-13 22:32:50,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:50,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091962430] [2021-10-13 22:32:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:50,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:50,576 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 22:32:50,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:50,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091962430] [2021-10-13 22:32:50,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091962430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:50,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598118825] [2021-10-13 22:32:50,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:50,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:50,579 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 22:32:50,580 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 22:32:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:51,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:51,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:51,642 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 22:32:51,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598118825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:51,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:51,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-10-13 22:32:51,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339491764] [2021-10-13 22:32:51,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:32:51,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:32:51,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:32:51,643 INFO L87 Difference]: Start difference. First operand 2331 states and 6319 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:51,986 INFO L93 Difference]: Finished difference Result 3474 states and 9203 transitions. [2021-10-13 22:32:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:32:51,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:32:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:51,990 INFO L225 Difference]: With dead ends: 3474 [2021-10-13 22:32:51,990 INFO L226 Difference]: Without dead ends: 2851 [2021-10-13 22:32:51,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 303.5ms TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-10-13 22:32:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2361. [2021-10-13 22:32:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 2360 states have (on average 2.730508474576271) internal successors, (6444), 2360 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 6444 transitions. [2021-10-13 22:32:52,017 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 6444 transitions. Word has length 75 [2021-10-13 22:32:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:52,017 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 6444 transitions. [2021-10-13 22:32:52,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 6444 transitions. [2021-10-13 22:32:52,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:52,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:52,036 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 22:32:52,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-13 22:32:52,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-13 22:32:52,237 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -312690892, now seen corresponding path program 32 times [2021-10-13 22:32:52,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:52,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894074222] [2021-10-13 22:32:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:52,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:52,330 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 22:32:52,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:52,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894074222] [2021-10-13 22:32:52,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894074222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:52,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253065528] [2021-10-13 22:32:52,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:52,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:52,331 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 22:32:52,333 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 22:32:53,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:53,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:53,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:53,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:53,366 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 22:32:53,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253065528] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:53,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:53,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:53,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236029995] [2021-10-13 22:32:53,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:53,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:53,367 INFO L87 Difference]: Start difference. First operand 2361 states and 6444 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 22:32:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:53,627 INFO L93 Difference]: Finished difference Result 3678 states and 9871 transitions. [2021-10-13 22:32:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:53,627 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 22:32:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:53,632 INFO L225 Difference]: With dead ends: 3678 [2021-10-13 22:32:53,632 INFO L226 Difference]: Without dead ends: 3408 [2021-10-13 22:32:53,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 222.7ms TimeCoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:32:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2021-10-13 22:32:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 2541. [2021-10-13 22:32:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2540 states have (on average 2.7570866141732284) internal successors, (7003), 2540 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 22:32:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 7003 transitions. [2021-10-13 22:32:53,666 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 7003 transitions. Word has length 75 [2021-10-13 22:32:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:53,666 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 7003 transitions. [2021-10-13 22:32:53,667 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 22:32:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 7003 transitions. [2021-10-13 22:32:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:53,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:53,670 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 22:32:53,688 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 22:32:53,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:53,871 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash -247448602, now seen corresponding path program 33 times [2021-10-13 22:32:53,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:53,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632203045] [2021-10-13 22:32:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:53,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:54,002 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 22:32:54,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:54,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632203045] [2021-10-13 22:32:54,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632203045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:54,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427714545] [2021-10-13 22:32:54,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:54,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:54,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:54,004 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 22:32:54,032 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 22:32:54,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:54,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:54,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:32:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:55,094 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 22:32:55,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427714545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:55,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:55,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:32:55,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662305423] [2021-10-13 22:32:55,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:32:55,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:32:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:32:55,096 INFO L87 Difference]: Start difference. First operand 2541 states and 7003 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 22:32:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:55,416 INFO L93 Difference]: Finished difference Result 3125 states and 8491 transitions. [2021-10-13 22:32:55,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:32:55,416 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 22:32:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:55,420 INFO L225 Difference]: With dead ends: 3125 [2021-10-13 22:32:55,420 INFO L226 Difference]: Without dead ends: 2636 [2021-10-13 22:32:55,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 288.2ms TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:32:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-10-13 22:32:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2486. [2021-10-13 22:32:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 2.752112676056338) internal successors, (6839), 2485 states have internal predecessors, (6839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 6839 transitions. [2021-10-13 22:32:55,444 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 6839 transitions. Word has length 75 [2021-10-13 22:32:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:55,444 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 6839 transitions. [2021-10-13 22:32:55,445 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 22:32:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 6839 transitions. [2021-10-13 22:32:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:55,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:55,447 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 22:32:55,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-13 22:32:55,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:55,648 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1000858146, now seen corresponding path program 34 times [2021-10-13 22:32:55,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:55,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859598204] [2021-10-13 22:32:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:55,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:55,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:55,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859598204] [2021-10-13 22:32:55,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859598204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:55,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130463042] [2021-10-13 22:32:55,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:55,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:55,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:55,803 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 22:32:55,807 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 22:32:56,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:56,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:56,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 22:32:56,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:57,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130463042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:57,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:57,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-13 22:32:57,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036209212] [2021-10-13 22:32:57,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:32:57,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:32:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:32:57,064 INFO L87 Difference]: Start difference. First operand 2486 states and 6839 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:57,257 INFO L93 Difference]: Finished difference Result 3591 states and 9369 transitions. [2021-10-13 22:32:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:32:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 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 22:32:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:57,262 INFO L225 Difference]: With dead ends: 3591 [2021-10-13 22:32:57,262 INFO L226 Difference]: Without dead ends: 3242 [2021-10-13 22:32:57,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 210.7ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2021-10-13 22:32:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2488. [2021-10-13 22:32:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7515078407720144) internal successors, (6843), 2487 states have internal predecessors, (6843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:57,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6843 transitions. [2021-10-13 22:32:57,288 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6843 transitions. Word has length 75 [2021-10-13 22:32:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:57,288 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6843 transitions. [2021-10-13 22:32:57,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6843 transitions. [2021-10-13 22:32:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:57,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:57,291 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 22:32:57,310 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 22:32:57,493 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,SelfDestructingSolverStorable44 [2021-10-13 22:32:57,493 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1176358374, now seen corresponding path program 35 times [2021-10-13 22:32:57,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:57,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259295557] [2021-10-13 22:32:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:57,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:57,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:57,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259295557] [2021-10-13 22:32:57,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259295557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:57,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119669952] [2021-10-13 22:32:57,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:57,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:57,619 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 22:32:57,650 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 22:32:58,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:58,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:58,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:32:58,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:58,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119669952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:58,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:58,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:32:58,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178286994] [2021-10-13 22:32:58,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:32:58,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:32:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:32:58,873 INFO L87 Difference]: Start difference. First operand 2488 states and 6843 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:32:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:59,013 INFO L93 Difference]: Finished difference Result 3441 states and 8877 transitions. [2021-10-13 22:32:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:32:59,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:32:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:59,017 INFO L225 Difference]: With dead ends: 3441 [2021-10-13 22:32:59,017 INFO L226 Difference]: Without dead ends: 3156 [2021-10-13 22:32:59,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:32:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-10-13 22:32:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 2468. [2021-10-13 22:32:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 2.7576003242805025) internal successors, (6803), 2467 states have internal predecessors, (6803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 6803 transitions. [2021-10-13 22:32:59,043 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 6803 transitions. Word has length 75 [2021-10-13 22:32:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:59,043 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 6803 transitions. [2021-10-13 22:32:59,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:32:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 6803 transitions. [2021-10-13 22:32:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:32:59,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:59,046 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 22:32:59,064 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 22:32:59,246 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,SelfDestructingSolverStorable45 [2021-10-13 22:32:59,247 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash 255963946, now seen corresponding path program 36 times [2021-10-13 22:32:59,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:59,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270459631] [2021-10-13 22:32:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:59,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:32:59,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:59,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270459631] [2021-10-13 22:32:59,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270459631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:59,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229572217] [2021-10-13 22:32:59,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:59,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:59,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:59,380 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 22:32:59,381 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 22:33:00,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:33:00,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:00,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:00,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:00,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229572217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:00,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:00,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:33:00,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94569172] [2021-10-13 22:33:00,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:00,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:00,632 INFO L87 Difference]: Start difference. First operand 2468 states and 6803 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:00,824 INFO L93 Difference]: Finished difference Result 3376 states and 8747 transitions. [2021-10-13 22:33:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:33:00,825 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:33:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:00,829 INFO L225 Difference]: With dead ends: 3376 [2021-10-13 22:33:00,829 INFO L226 Difference]: Without dead ends: 3091 [2021-10-13 22:33:00,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 188.9ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:33:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2021-10-13 22:33:00,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2443. [2021-10-13 22:33:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2442 states have (on average 2.7653562653562656) internal successors, (6753), 2442 states have internal predecessors, (6753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 6753 transitions. [2021-10-13 22:33:00,857 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 6753 transitions. Word has length 75 [2021-10-13 22:33:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:00,857 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 6753 transitions. [2021-10-13 22:33:00,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 6753 transitions. [2021-10-13 22:33:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:00,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:00,859 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 22:33:00,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-13 22:33:01,060 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,SelfDestructingSolverStorable46 [2021-10-13 22:33:01,060 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:01,060 INFO L82 PathProgramCache]: Analyzing trace with hash -153807140, now seen corresponding path program 37 times [2021-10-13 22:33:01,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:01,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220128731] [2021-10-13 22:33:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:01,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:01,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:01,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220128731] [2021-10-13 22:33:01,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220128731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:01,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608973619] [2021-10-13 22:33:01,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:01,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:01,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:01,179 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 22:33:01,180 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 22:33:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:02,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:02,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:02,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608973619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:02,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:02,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:33:02,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344177689] [2021-10-13 22:33:02,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:02,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:02,438 INFO L87 Difference]: Start difference. First operand 2443 states and 6753 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:02,598 INFO L93 Difference]: Finished difference Result 3301 states and 8597 transitions. [2021-10-13 22:33:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:33:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:02,602 INFO L225 Difference]: With dead ends: 3301 [2021-10-13 22:33:02,603 INFO L226 Difference]: Without dead ends: 3016 [2021-10-13 22:33:02,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:33:02,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-10-13 22:33:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2418. [2021-10-13 22:33:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 2.7732726520479933) internal successors, (6703), 2417 states have internal predecessors, (6703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 6703 transitions. [2021-10-13 22:33:02,631 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 6703 transitions. Word has length 75 [2021-10-13 22:33:02,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:02,631 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 6703 transitions. [2021-10-13 22:33:02,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 6703 transitions. [2021-10-13 22:33:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:02,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:02,634 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 22:33:02,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:02,849 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,SelfDestructingSolverStorable47 [2021-10-13 22:33:02,849 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1180675052, now seen corresponding path program 38 times [2021-10-13 22:33:02,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:02,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396467149] [2021-10-13 22:33:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:02,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:02,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:02,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396467149] [2021-10-13 22:33:02,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396467149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:02,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868087459] [2021-10-13 22:33:02,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:02,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:02,956 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 22:33:02,984 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 22:33:04,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:04,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:04,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:04,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:04,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868087459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:04,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:04,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:33:04,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205741125] [2021-10-13 22:33:04,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:04,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:04,267 INFO L87 Difference]: Start difference. First operand 2418 states and 6703 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:04,520 INFO L93 Difference]: Finished difference Result 3226 states and 8447 transitions. [2021-10-13 22:33:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:04,520 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:33:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:04,523 INFO L225 Difference]: With dead ends: 3226 [2021-10-13 22:33:04,523 INFO L226 Difference]: Without dead ends: 2941 [2021-10-13 22:33:04,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 221.2ms TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2021-10-13 22:33:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2393. [2021-10-13 22:33:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2393 states, 2392 states have (on average 2.7813545150501673) internal successors, (6653), 2392 states have internal predecessors, (6653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 6653 transitions. [2021-10-13 22:33:04,548 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 6653 transitions. Word has length 75 [2021-10-13 22:33:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:04,549 INFO L470 AbstractCegarLoop]: Abstraction has 2393 states and 6653 transitions. [2021-10-13 22:33:04,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 6653 transitions. [2021-10-13 22:33:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:04,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:04,551 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 22:33:04,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-13 22:33:04,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:04,751 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:04,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:04,752 INFO L82 PathProgramCache]: Analyzing trace with hash -793205218, now seen corresponding path program 39 times [2021-10-13 22:33:04,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:04,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804769898] [2021-10-13 22:33:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:04,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:04,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:04,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804769898] [2021-10-13 22:33:04,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804769898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:04,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920927706] [2021-10-13 22:33:04,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:04,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:04,840 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 22:33:04,862 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 22:33:05,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:33:05,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:05,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:05,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:06,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920927706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:06,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:33:06,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024843319] [2021-10-13 22:33:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:06,186 INFO L87 Difference]: Start difference. First operand 2393 states and 6653 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:06,384 INFO L93 Difference]: Finished difference Result 3151 states and 8297 transitions. [2021-10-13 22:33:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:33:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:06,388 INFO L225 Difference]: With dead ends: 3151 [2021-10-13 22:33:06,388 INFO L226 Difference]: Without dead ends: 2866 [2021-10-13 22:33:06,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:33:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-10-13 22:33:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2368. [2021-10-13 22:33:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2367 states have (on average 2.7896070975918885) internal successors, (6603), 2367 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 22:33:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 6603 transitions. [2021-10-13 22:33:06,413 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 6603 transitions. Word has length 75 [2021-10-13 22:33:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:06,413 INFO L470 AbstractCegarLoop]: Abstraction has 2368 states and 6603 transitions. [2021-10-13 22:33:06,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 6603 transitions. [2021-10-13 22:33:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:06,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:06,415 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 22:33:06,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-13 22:33:06,616 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,SelfDestructingSolverStorable49 [2021-10-13 22:33:06,616 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash 762793774, now seen corresponding path program 40 times [2021-10-13 22:33:06,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:06,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768996989] [2021-10-13 22:33:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:06,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:06,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:06,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768996989] [2021-10-13 22:33:06,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768996989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367663872] [2021-10-13 22:33:06,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:06,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:06,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:06,713 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 22:33:06,714 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 22:33:07,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:07,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:07,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:07,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:08,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367663872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:08,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:08,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-13 22:33:08,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669579002] [2021-10-13 22:33:08,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:08,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:08,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:08,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:08,036 INFO L87 Difference]: Start difference. First operand 2368 states and 6603 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:08,329 INFO L93 Difference]: Finished difference Result 3076 states and 8147 transitions. [2021-10-13 22:33:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:33:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:08,333 INFO L225 Difference]: With dead ends: 3076 [2021-10-13 22:33:08,333 INFO L226 Difference]: Without dead ends: 2791 [2021-10-13 22:33:08,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 251.7ms TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-10-13 22:33:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2343. [2021-10-13 22:33:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2342 states have (on average 2.7980358667805296) internal successors, (6553), 2342 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 22:33:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 6553 transitions. [2021-10-13 22:33:08,359 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 6553 transitions. Word has length 75 [2021-10-13 22:33:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:08,359 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 6553 transitions. [2021-10-13 22:33:08,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 6553 transitions. [2021-10-13 22:33:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:08,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:08,362 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 22:33:08,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 22:33:08,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:08,579 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1041760288, now seen corresponding path program 41 times [2021-10-13 22:33:08,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:08,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737822004] [2021-10-13 22:33:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:08,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:08,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:08,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737822004] [2021-10-13 22:33:08,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737822004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:08,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930622214] [2021-10-13 22:33:08,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:08,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:08,709 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 22:33:08,736 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 22:33:09,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:33:09,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:09,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:33:09,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 22:33:10,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930622214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:10,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:10,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 22:33:10,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466833323] [2021-10-13 22:33:10,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 22:33:10,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 22:33:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 22:33:10,084 INFO L87 Difference]: Start difference. First operand 2343 states and 6553 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:10,305 INFO L93 Difference]: Finished difference Result 3903 states and 10471 transitions. [2021-10-13 22:33:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:10,305 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:10,311 INFO L225 Difference]: With dead ends: 3903 [2021-10-13 22:33:10,311 INFO L226 Difference]: Without dead ends: 3603 [2021-10-13 22:33:10,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 195.9ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2021-10-13 22:33:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 2508. [2021-10-13 22:33:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2507 states have (on average 2.820901475867571) internal successors, (7072), 2507 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 7072 transitions. [2021-10-13 22:33:10,341 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 7072 transitions. Word has length 75 [2021-10-13 22:33:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:10,341 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 7072 transitions. [2021-10-13 22:33:10,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 22:33:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 7072 transitions. [2021-10-13 22:33:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 22:33:10,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:10,343 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 22:33:10,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-13 22:33:10,544 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,SelfDestructingSolverStorable51 [2021-10-13 22:33:10,544 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:10,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:10,544 INFO L82 PathProgramCache]: Analyzing trace with hash -824105777, now seen corresponding path program 42 times [2021-10-13 22:33:10,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:10,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503031006] [2021-10-13 22:33:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:10,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:10,674 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 22:33:10,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:10,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503031006] [2021-10-13 22:33:10,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503031006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:10,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945973021] [2021-10-13 22:33:10,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:10,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:10,677 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 22:33:10,702 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 22:33:12,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:33:12,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:12,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:12,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:12,238 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 22:33:12,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945973021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:12,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:12,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 22:33:12,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416528804] [2021-10-13 22:33:12,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:33:12,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:12,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:33:12,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:33:12,239 INFO L87 Difference]: Start difference. First operand 2508 states and 7072 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 22:33:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:12,538 INFO L93 Difference]: Finished difference Result 3285 states and 8946 transitions. [2021-10-13 22:33:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:12,539 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 22:33:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:12,542 INFO L225 Difference]: With dead ends: 3285 [2021-10-13 22:33:12,542 INFO L226 Difference]: Without dead ends: 2706 [2021-10-13 22:33:12,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 267.0ms TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-10-13 22:33:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1634. [2021-10-13 22:33:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 2.7348438456827924) internal successors, (4466), 1633 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 4466 transitions. [2021-10-13 22:33:12,561 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 4466 transitions. Word has length 75 [2021-10-13 22:33:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:12,562 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 4466 transitions. [2021-10-13 22:33:12,562 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 22:33:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 4466 transitions. [2021-10-13 22:33:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:12,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:12,563 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 22:33:12,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:12,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:12,764 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:12,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:12,764 INFO L82 PathProgramCache]: Analyzing trace with hash -667649264, now seen corresponding path program 43 times [2021-10-13 22:33:12,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:12,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681020658] [2021-10-13 22:33:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:12,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:12,914 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 22:33:12,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:12,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681020658] [2021-10-13 22:33:12,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681020658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:12,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767065427] [2021-10-13 22:33:12,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:12,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:12,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:12,916 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 22:33:12,916 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 22:33:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:14,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:14,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:14,475 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 22:33:14,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767065427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:14,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:14,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-10-13 22:33:14,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101124970] [2021-10-13 22:33:14,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:33:14,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:33:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:33:14,476 INFO L87 Difference]: Start difference. First operand 1634 states and 4466 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 22:33:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:14,710 INFO L93 Difference]: Finished difference Result 2524 states and 6566 transitions. [2021-10-13 22:33:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:14,711 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 22:33:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:14,713 INFO L225 Difference]: With dead ends: 2524 [2021-10-13 22:33:14,714 INFO L226 Difference]: Without dead ends: 2190 [2021-10-13 22:33:14,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2021-10-13 22:33:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1719. [2021-10-13 22:33:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 2.6984866123399303) internal successors, (4636), 1718 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 4636 transitions. [2021-10-13 22:33:14,731 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 4636 transitions. Word has length 80 [2021-10-13 22:33:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:14,732 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 4636 transitions. [2021-10-13 22:33:14,732 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 22:33:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 4636 transitions. [2021-10-13 22:33:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:14,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:14,733 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 22:33:14,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:14,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:14,934 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:14,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1345956948, now seen corresponding path program 44 times [2021-10-13 22:33:14,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:14,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193059255] [2021-10-13 22:33:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:14,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:15,067 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 22:33:15,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:15,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193059255] [2021-10-13 22:33:15,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193059255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:15,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550357900] [2021-10-13 22:33:15,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:15,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:15,069 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 22:33:15,073 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 22:33:16,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:16,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:16,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:16,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:16,604 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 22:33:16,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550357900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:16,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:16,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:16,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130243834] [2021-10-13 22:33:16,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:16,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:16,606 INFO L87 Difference]: Start difference. First operand 1719 states and 4636 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 22:33:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:16,794 INFO L93 Difference]: Finished difference Result 2946 states and 7347 transitions. [2021-10-13 22:33:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 22:33:16,794 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 22:33:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:16,798 INFO L225 Difference]: With dead ends: 2946 [2021-10-13 22:33:16,798 INFO L226 Difference]: Without dead ends: 2676 [2021-10-13 22:33:16,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 191.3ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:33:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-10-13 22:33:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 1863. [2021-10-13 22:33:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 2.71374865735768) internal successors, (5053), 1862 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 5053 transitions. [2021-10-13 22:33:16,824 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 5053 transitions. Word has length 80 [2021-10-13 22:33:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:16,824 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 5053 transitions. [2021-10-13 22:33:16,824 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 22:33:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 5053 transitions. [2021-10-13 22:33:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:16,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:16,826 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 22:33:16,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:17,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 22:33:17,031 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:17,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1162848956, now seen corresponding path program 45 times [2021-10-13 22:33:17,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:17,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697047211] [2021-10-13 22:33:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:17,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:17,195 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 22:33:17,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:17,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697047211] [2021-10-13 22:33:17,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697047211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:17,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973350784] [2021-10-13 22:33:17,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:17,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:17,199 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 22:33:17,229 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 22:33:18,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:33:18,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:18,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:18,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:18,773 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 22:33:18,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973350784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:18,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:18,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:18,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989567851] [2021-10-13 22:33:18,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:18,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:18,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:18,775 INFO L87 Difference]: Start difference. First operand 1863 states and 5053 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 22:33:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:19,000 INFO L93 Difference]: Finished difference Result 2906 states and 7342 transitions. [2021-10-13 22:33:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:19,000 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 22:33:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:19,003 INFO L225 Difference]: With dead ends: 2906 [2021-10-13 22:33:19,003 INFO L226 Difference]: Without dead ends: 2636 [2021-10-13 22:33:19,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 245.2ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-10-13 22:33:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1938. [2021-10-13 22:33:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1937 states have (on average 2.7248322147651005) internal successors, (5278), 1937 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 5278 transitions. [2021-10-13 22:33:19,024 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 5278 transitions. Word has length 80 [2021-10-13 22:33:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:19,025 INFO L470 AbstractCegarLoop]: Abstraction has 1938 states and 5278 transitions. [2021-10-13 22:33:19,025 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 22:33:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 5278 transitions. [2021-10-13 22:33:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:19,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:19,026 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 22:33:19,046 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 22:33:19,227 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,SelfDestructingSolverStorable55 [2021-10-13 22:33:19,227 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:19,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1233030958, now seen corresponding path program 46 times [2021-10-13 22:33:19,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:19,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846699019] [2021-10-13 22:33:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:19,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:19,353 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 22:33:19,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:19,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846699019] [2021-10-13 22:33:19,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846699019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:19,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23065745] [2021-10-13 22:33:19,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:19,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:19,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:19,355 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 22:33:19,383 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 22:33:20,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:20,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:20,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:20,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:20,936 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 22:33:20,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23065745] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:20,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:20,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:20,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772117089] [2021-10-13 22:33:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:20,937 INFO L87 Difference]: Start difference. First operand 1938 states and 5278 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 22:33:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:21,137 INFO L93 Difference]: Finished difference Result 2956 states and 7517 transitions. [2021-10-13 22:33:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:33:21,137 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 22:33:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:21,141 INFO L225 Difference]: With dead ends: 2956 [2021-10-13 22:33:21,141 INFO L226 Difference]: Without dead ends: 2686 [2021-10-13 22:33:21,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:33:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-10-13 22:33:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2013. [2021-10-13 22:33:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 2012 states have (on average 2.735089463220676) internal successors, (5503), 2012 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 5503 transitions. [2021-10-13 22:33:21,165 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 5503 transitions. Word has length 80 [2021-10-13 22:33:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 2013 states and 5503 transitions. [2021-10-13 22:33:21,165 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 22:33:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 5503 transitions. [2021-10-13 22:33:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:21,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:21,167 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 22:33:21,189 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 22:33:21,367 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,SelfDestructingSolverStorable56 [2021-10-13 22:33:21,368 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:21,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:21,368 INFO L82 PathProgramCache]: Analyzing trace with hash -359037502, now seen corresponding path program 47 times [2021-10-13 22:33:21,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:21,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126170279] [2021-10-13 22:33:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:21,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:21,539 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 22:33:21,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:21,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126170279] [2021-10-13 22:33:21,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126170279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:21,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508750967] [2021-10-13 22:33:21,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:21,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:21,540 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 22:33:21,541 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 22:33:22,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:33:22,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:22,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:22,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:23,137 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 22:33:23,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508750967] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:23,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:23,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:23,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967835345] [2021-10-13 22:33:23,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:23,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:23,138 INFO L87 Difference]: Start difference. First operand 2013 states and 5503 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 22:33:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:23,428 INFO L93 Difference]: Finished difference Result 2981 states and 7642 transitions. [2021-10-13 22:33:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:23,429 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 22:33:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:23,431 INFO L225 Difference]: With dead ends: 2981 [2021-10-13 22:33:23,432 INFO L226 Difference]: Without dead ends: 2711 [2021-10-13 22:33:23,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 318.2ms TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2021-10-13 22:33:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2088. [2021-10-13 22:33:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2087 states have (on average 2.744609487302348) internal successors, (5728), 2087 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 5728 transitions. [2021-10-13 22:33:23,453 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 5728 transitions. Word has length 80 [2021-10-13 22:33:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:23,453 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 5728 transitions. [2021-10-13 22:33:23,453 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 22:33:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 5728 transitions. [2021-10-13 22:33:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:23,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:23,455 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 22:33:23,476 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 22:33:23,656 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,SelfDestructingSolverStorable57 [2021-10-13 22:33:23,656 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash 136256208, now seen corresponding path program 48 times [2021-10-13 22:33:23,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:23,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745907088] [2021-10-13 22:33:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:23,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:23,774 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 22:33:23,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:23,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745907088] [2021-10-13 22:33:23,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745907088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:23,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246930288] [2021-10-13 22:33:23,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:23,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:23,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:23,776 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 22:33:23,785 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 22:33:25,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:33:25,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:25,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:25,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:25,409 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 22:33:25,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246930288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:25,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:25,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:25,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207236743] [2021-10-13 22:33:25,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:25,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:25,411 INFO L87 Difference]: Start difference. First operand 2088 states and 5728 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 22:33:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:25,652 INFO L93 Difference]: Finished difference Result 3006 states and 7767 transitions. [2021-10-13 22:33:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:25,653 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 22:33:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:25,656 INFO L225 Difference]: With dead ends: 3006 [2021-10-13 22:33:25,656 INFO L226 Difference]: Without dead ends: 2736 [2021-10-13 22:33:25,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 215.5ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-10-13 22:33:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2163. [2021-10-13 22:33:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 2.7534690101757633) internal successors, (5953), 2162 states have internal predecessors, (5953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 5953 transitions. [2021-10-13 22:33:25,706 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 5953 transitions. Word has length 80 [2021-10-13 22:33:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:25,706 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 5953 transitions. [2021-10-13 22:33:25,707 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 22:33:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 5953 transitions. [2021-10-13 22:33:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:25,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:25,709 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 22:33:25,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:25,923 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,SelfDestructingSolverStorable58 [2021-10-13 22:33:25,923 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:25,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:25,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1886362560, now seen corresponding path program 49 times [2021-10-13 22:33:25,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:25,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967560933] [2021-10-13 22:33:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:25,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:26,062 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 22:33:26,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:26,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967560933] [2021-10-13 22:33:26,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967560933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:26,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029002615] [2021-10-13 22:33:26,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:26,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:26,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:26,064 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 22:33:26,095 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 22:33:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:27,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:27,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:27,858 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 22:33:27,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029002615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:27,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:27,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:27,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993940394] [2021-10-13 22:33:27,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:27,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:27,859 INFO L87 Difference]: Start difference. First operand 2163 states and 5953 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 22:33:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:28,190 INFO L93 Difference]: Finished difference Result 3031 states and 7892 transitions. [2021-10-13 22:33:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:28,190 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 22:33:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:28,194 INFO L225 Difference]: With dead ends: 3031 [2021-10-13 22:33:28,194 INFO L226 Difference]: Without dead ends: 2761 [2021-10-13 22:33:28,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 304.4ms TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-10-13 22:33:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2238. [2021-10-13 22:33:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2237 states have (on average 2.761734465802414) internal successors, (6178), 2237 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 6178 transitions. [2021-10-13 22:33:28,220 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 6178 transitions. Word has length 80 [2021-10-13 22:33:28,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:28,221 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 6178 transitions. [2021-10-13 22:33:28,221 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 22:33:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 6178 transitions. [2021-10-13 22:33:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:28,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:28,223 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 22:33:28,242 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 22:33:28,423 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,SelfDestructingSolverStorable59 [2021-10-13 22:33:28,423 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:28,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1498707378, now seen corresponding path program 50 times [2021-10-13 22:33:28,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:28,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771412681] [2021-10-13 22:33:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:28,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:28,531 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 22:33:28,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:28,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771412681] [2021-10-13 22:33:28,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771412681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:28,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687310258] [2021-10-13 22:33:28,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:28,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:28,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:28,532 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 22:33:28,533 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 22:33:29,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:29,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:29,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:30,201 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 22:33:30,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687310258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:30,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:30,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:30,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558643936] [2021-10-13 22:33:30,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:30,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:30,202 INFO L87 Difference]: Start difference. First operand 2238 states and 6178 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 22:33:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:30,455 INFO L93 Difference]: Finished difference Result 3056 states and 8017 transitions. [2021-10-13 22:33:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:30,455 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 22:33:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:30,459 INFO L225 Difference]: With dead ends: 3056 [2021-10-13 22:33:30,459 INFO L226 Difference]: Without dead ends: 2786 [2021-10-13 22:33:30,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 224.4ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-10-13 22:33:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2313. [2021-10-13 22:33:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2312 states have (on average 2.769463667820069) internal successors, (6403), 2312 states have internal predecessors, (6403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 6403 transitions. [2021-10-13 22:33:30,484 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 6403 transitions. Word has length 80 [2021-10-13 22:33:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:30,484 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 6403 transitions. [2021-10-13 22:33:30,484 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 22:33:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 6403 transitions. [2021-10-13 22:33:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:30,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:30,486 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 22:33:30,506 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 22:33:30,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:30,687 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:30,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1366591682, now seen corresponding path program 51 times [2021-10-13 22:33:30,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:30,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476273987] [2021-10-13 22:33:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:30,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:30,821 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 22:33:30,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:30,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476273987] [2021-10-13 22:33:30,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476273987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:30,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046799898] [2021-10-13 22:33:30,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:30,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:30,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:30,823 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 22:33:30,825 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 22:33:32,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:33:32,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:32,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:33:32,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:32,470 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 22:33:32,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046799898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:32,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:32,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:32,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858590905] [2021-10-13 22:33:32,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:32,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:32,472 INFO L87 Difference]: Start difference. First operand 2313 states and 6403 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 22:33:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:32,792 INFO L93 Difference]: Finished difference Result 3141 states and 8307 transitions. [2021-10-13 22:33:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:32,793 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 22:33:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:32,796 INFO L225 Difference]: With dead ends: 3141 [2021-10-13 22:33:32,796 INFO L226 Difference]: Without dead ends: 2871 [2021-10-13 22:33:32,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 316.8ms TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-10-13 22:33:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2388. [2021-10-13 22:33:32,841 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 22:33:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 6648 transitions. [2021-10-13 22:33:32,844 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 6648 transitions. Word has length 80 [2021-10-13 22:33:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:32,844 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 6648 transitions. [2021-10-13 22:33:32,844 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 22:33:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 6648 transitions. [2021-10-13 22:33:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:32,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:32,846 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 22:33:32,866 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 22:33:33,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:33,047 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:33,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1822974132, now seen corresponding path program 52 times [2021-10-13 22:33:33,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:33,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971932530] [2021-10-13 22:33:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:33,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:33,154 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 22:33:33,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:33,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971932530] [2021-10-13 22:33:33,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971932530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:33,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814528153] [2021-10-13 22:33:33,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:33,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:33,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:33,156 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 22:33:33,156 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 22:33:34,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:34,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:34,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:34,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:34,823 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 22:33:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814528153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:34,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:34,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 22:33:34,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617723204] [2021-10-13 22:33:34,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:33:34,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:33:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:33:34,825 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 22:33:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:35,123 INFO L93 Difference]: Finished difference Result 3908 states and 10481 transitions. [2021-10-13 22:33:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:35,124 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 22:33:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:35,128 INFO L225 Difference]: With dead ends: 3908 [2021-10-13 22:33:35,128 INFO L226 Difference]: Without dead ends: 3638 [2021-10-13 22:33:35,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 250.6ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:33:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2021-10-13 22:33:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 2568. [2021-10-13 22:33:35,160 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 22:33:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 7207 transitions. [2021-10-13 22:33:35,163 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 7207 transitions. Word has length 80 [2021-10-13 22:33:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:35,164 INFO L470 AbstractCegarLoop]: Abstraction has 2568 states and 7207 transitions. [2021-10-13 22:33:35,164 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 22:33:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 7207 transitions. [2021-10-13 22:33:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 22:33:35,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:35,166 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 22:33:35,186 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 22:33:35,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:35,367 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:35,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:35,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1757731842, now seen corresponding path program 53 times [2021-10-13 22:33:35,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:35,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928879207] [2021-10-13 22:33:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:35,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:35,481 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 22:33:35,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:35,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928879207] [2021-10-13 22:33:35,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928879207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:35,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039114537] [2021-10-13 22:33:35,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:35,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:35,482 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 22:33:35,491 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 22:33:37,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:33:37,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:37,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:33:37,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:37,262 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 22:33:37,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039114537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:37,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:37,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-13 22:33:37,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363094236] [2021-10-13 22:33:37,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:37,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:37,263 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 22:33:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:37,689 INFO L93 Difference]: Finished difference Result 3851 states and 10341 transitions. [2021-10-13 22:33:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:33:37,689 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 22:33:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:37,694 INFO L225 Difference]: With dead ends: 3851 [2021-10-13 22:33:37,694 INFO L226 Difference]: Without dead ends: 3276 [2021-10-13 22:33:37,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 386.9ms TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:33:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-10-13 22:33:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2603. [2021-10-13 22:33:37,718 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 22:33:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:37,721 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 80 [2021-10-13 22:33:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:37,722 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:37,722 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 22:33:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:37,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:37,724 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 22:33:37,745 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 22:33:37,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:37,927 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:37,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1972919915, now seen corresponding path program 54 times [2021-10-13 22:33:37,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:37,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120416425] [2021-10-13 22:33:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:37,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:38,100 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 22:33:38,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:38,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120416425] [2021-10-13 22:33:38,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120416425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:38,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571605069] [2021-10-13 22:33:38,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:38,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:38,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:38,101 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 22:33:38,102 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 22:33:39,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:39,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:39,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:39,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:39,976 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 22:33:39,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571605069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:39,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:39,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:39,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076013616] [2021-10-13 22:33:39,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:39,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:39,978 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 22:33:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:40,278 INFO L93 Difference]: Finished difference Result 3446 states and 9097 transitions. [2021-10-13 22:33:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:40,278 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 22:33:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:40,282 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:33:40,282 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:33:40,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 257.8ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:33:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2603. [2021-10-13 22:33:40,306 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 22:33:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:40,310 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:40,310 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:40,310 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 22:33:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:40,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:40,312 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 22:33:40,333 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 22:33:40,513 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,SelfDestructingSolverStorable64 [2021-10-13 22:33:40,513 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:40,514 INFO L82 PathProgramCache]: Analyzing trace with hash -535885989, now seen corresponding path program 55 times [2021-10-13 22:33:40,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:40,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822167195] [2021-10-13 22:33:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:40,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:40,651 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 22:33:40,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822167195] [2021-10-13 22:33:40,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822167195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19812094] [2021-10-13 22:33:40,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:40,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:40,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:40,653 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 22:33:40,653 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 22:33:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:42,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:42,571 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 22:33:42,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19812094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:42,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:42,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:42,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887894576] [2021-10-13 22:33:42,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:42,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:42,573 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 22:33:42,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:42,846 INFO L93 Difference]: Finished difference Result 3641 states and 9487 transitions. [2021-10-13 22:33:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:42,847 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 22:33:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:42,851 INFO L225 Difference]: With dead ends: 3641 [2021-10-13 22:33:42,851 INFO L226 Difference]: Without dead ends: 3371 [2021-10-13 22:33:42,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 268.3ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2021-10-13 22:33:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2603. [2021-10-13 22:33:42,882 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 22:33:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:42,886 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:42,886 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:42,886 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 22:33:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:42,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:42,888 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 22:33:42,908 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 22:33:43,088 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,SelfDestructingSolverStorable65 [2021-10-13 22:33:43,089 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:43,089 INFO L82 PathProgramCache]: Analyzing trace with hash -606067991, now seen corresponding path program 56 times [2021-10-13 22:33:43,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:43,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641139335] [2021-10-13 22:33:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:43,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:43,216 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 22:33:43,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:43,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641139335] [2021-10-13 22:33:43,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641139335] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:43,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171453531] [2021-10-13 22:33:43,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:43,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:43,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:43,218 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 22:33:43,219 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 22:33:44,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:44,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:44,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:44,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:45,117 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 22:33:45,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171453531] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:45,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:45,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:45,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210123235] [2021-10-13 22:33:45,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:45,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:45,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:45,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:45,118 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 22:33:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:45,355 INFO L93 Difference]: Finished difference Result 3596 states and 9397 transitions. [2021-10-13 22:33:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:45,356 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 22:33:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:45,360 INFO L225 Difference]: With dead ends: 3596 [2021-10-13 22:33:45,360 INFO L226 Difference]: Without dead ends: 3326 [2021-10-13 22:33:45,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 229.0ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:33:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2021-10-13 22:33:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2603. [2021-10-13 22:33:45,385 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 22:33:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:45,388 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:45,388 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:45,388 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 22:33:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:45,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:45,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:45,391 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 22:33:45,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:45,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,591 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash 267925465, now seen corresponding path program 57 times [2021-10-13 22:33:45,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:45,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625152425] [2021-10-13 22:33:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:45,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:45,732 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 22:33:45,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:45,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625152425] [2021-10-13 22:33:45,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625152425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:45,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779973686] [2021-10-13 22:33:45,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:45,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:45,733 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 22:33:45,734 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 22:33:47,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:33:47,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:47,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:33:47,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:47,625 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 22:33:47,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779973686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:47,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:47,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:47,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449439250] [2021-10-13 22:33:47,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:47,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:47,626 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 22:33:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:47,987 INFO L93 Difference]: Finished difference Result 3546 states and 9297 transitions. [2021-10-13 22:33:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:33:47,988 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 22:33:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:47,993 INFO L225 Difference]: With dead ends: 3546 [2021-10-13 22:33:47,993 INFO L226 Difference]: Without dead ends: 3276 [2021-10-13 22:33:47,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 314.5ms TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-10-13 22:33:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2603. [2021-10-13 22:33:48,022 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 22:33:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:48,026 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:48,026 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:48,026 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 22:33:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:48,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:48,029 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 22:33:48,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-13 22:33:48,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:48,243 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:48,244 INFO L82 PathProgramCache]: Analyzing trace with hash 763219175, now seen corresponding path program 58 times [2021-10-13 22:33:48,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:48,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667373765] [2021-10-13 22:33:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:48,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:48,382 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 22:33:48,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:48,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667373765] [2021-10-13 22:33:48,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667373765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:48,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361913267] [2021-10-13 22:33:48,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:48,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:48,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:48,384 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 22:33:48,384 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 22:33:50,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:50,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:50,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:50,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:50,271 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 22:33:50,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361913267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:50,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:50,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:50,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882527757] [2021-10-13 22:33:50,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:50,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:50,272 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 22:33:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:50,537 INFO L93 Difference]: Finished difference Result 3496 states and 9197 transitions. [2021-10-13 22:33:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:50,538 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 22:33:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:50,542 INFO L225 Difference]: With dead ends: 3496 [2021-10-13 22:33:50,542 INFO L226 Difference]: Without dead ends: 3226 [2021-10-13 22:33:50,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 258.6ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:50,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-10-13 22:33:50,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2603. [2021-10-13 22:33:50,593 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 22:33:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:50,597 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:50,597 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:50,597 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 22:33:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:50,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:50,600 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 22:33:50,621 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 22:33:50,800 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,SelfDestructingSolverStorable68 [2021-10-13 22:33:50,800 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1781641769, now seen corresponding path program 59 times [2021-10-13 22:33:50,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:50,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137428758] [2021-10-13 22:33:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:50,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:50,971 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 22:33:50,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:50,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137428758] [2021-10-13 22:33:50,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137428758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:50,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142211277] [2021-10-13 22:33:50,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:50,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:50,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:50,973 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 22:33:50,973 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 22:33:52,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:33:52,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:52,932 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 22:33:52,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142211277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:52,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:52,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:52,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400337574] [2021-10-13 22:33:52,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:52,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:52,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:52,933 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 22:33:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:53,275 INFO L93 Difference]: Finished difference Result 3446 states and 9097 transitions. [2021-10-13 22:33:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:33:53,275 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 22:33:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:53,279 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:33:53,279 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:33:53,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 346.9ms TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:33:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2603. [2021-10-13 22:33:53,302 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 22:33:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:53,305 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:53,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:53,305 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:53,305 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 22:33:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:53,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:53,307 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 22:33:53,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-13 22:33:53,508 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,SelfDestructingSolverStorable69 [2021-10-13 22:33:53,508 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:53,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:53,508 INFO L82 PathProgramCache]: Analyzing trace with hash -871744411, now seen corresponding path program 60 times [2021-10-13 22:33:53,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:53,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897262589] [2021-10-13 22:33:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:53,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:53,673 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 22:33:53,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:53,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897262589] [2021-10-13 22:33:53,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897262589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:53,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598112841] [2021-10-13 22:33:53,673 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:53,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:53,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:53,674 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 22:33:53,692 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 22:33:55,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:33:55,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:55,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:33:55,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:55,657 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 22:33:55,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598112841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:55,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:55,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:33:55,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123737167] [2021-10-13 22:33:55,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:33:55,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:55,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:33:55,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:33:55,659 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 22:33:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:55,967 INFO L93 Difference]: Finished difference Result 3396 states and 8997 transitions. [2021-10-13 22:33:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:33:55,967 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 22:33:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:55,972 INFO L225 Difference]: With dead ends: 3396 [2021-10-13 22:33:55,972 INFO L226 Difference]: Without dead ends: 3126 [2021-10-13 22:33:55,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 279.9ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-13 22:33:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2603. [2021-10-13 22:33:56,003 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 22:33:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7283 transitions. [2021-10-13 22:33:56,006 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7283 transitions. Word has length 85 [2021-10-13 22:33:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:56,007 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7283 transitions. [2021-10-13 22:33:56,007 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 22:33:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7283 transitions. [2021-10-13 22:33:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:56,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:56,009 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 22:33:56,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:56,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:56,223 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:56,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:56,224 INFO L82 PathProgramCache]: Analyzing trace with hash -739628715, now seen corresponding path program 61 times [2021-10-13 22:33:56,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:56,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141225759] [2021-10-13 22:33:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:56,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:56,334 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 22:33:56,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:56,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141225759] [2021-10-13 22:33:56,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141225759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:56,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315585937] [2021-10-13 22:33:56,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:56,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:56,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:56,335 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 22:33:56,336 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 22:33:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:58,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 22:33:58,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:58,341 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 22:33:58,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315585937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:58,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:58,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:33:58,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970785817] [2021-10-13 22:33:58,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:33:58,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:58,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:33:58,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:33:58,342 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 22:33:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:58,737 INFO L93 Difference]: Finished difference Result 3406 states and 9047 transitions. [2021-10-13 22:33:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:33:58,737 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 22:33:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:58,741 INFO L225 Difference]: With dead ends: 3406 [2021-10-13 22:33:58,741 INFO L226 Difference]: Without dead ends: 3136 [2021-10-13 22:33:58,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 354.1ms TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:33:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2021-10-13 22:33:58,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2603. [2021-10-13 22:33:58,764 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 22:33:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7288 transitions. [2021-10-13 22:33:58,803 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7288 transitions. Word has length 85 [2021-10-13 22:33:58,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:58,803 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7288 transitions. [2021-10-13 22:33:58,803 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 22:33:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7288 transitions. [2021-10-13 22:33:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:33:58,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:58,806 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 22:33:58,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-13 22:33:59,006 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,SelfDestructingSolverStorable71 [2021-10-13 22:33:59,007 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:59,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1196011165, now seen corresponding path program 62 times [2021-10-13 22:33:59,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:59,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151794505] [2021-10-13 22:33:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:59,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:59,122 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 22:33:59,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:59,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151794505] [2021-10-13 22:33:59,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151794505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:59,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926415860] [2021-10-13 22:33:59,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:59,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:59,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:59,123 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 22:33:59,152 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 22:34:00,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:00,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:00,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:00,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:01,130 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 22:34:01,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926415860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:01,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 22:34:01,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530261078] [2021-10-13 22:34:01,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:01,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:01,132 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 22:34:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:01,457 INFO L93 Difference]: Finished difference Result 4148 states and 11171 transitions. [2021-10-13 22:34:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:34:01,457 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 22:34:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:01,462 INFO L225 Difference]: With dead ends: 4148 [2021-10-13 22:34:01,462 INFO L226 Difference]: Without dead ends: 3878 [2021-10-13 22:34:01,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 290.6ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:34:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-10-13 22:34:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2783. [2021-10-13 22:34:01,490 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 22:34:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 7847 transitions. [2021-10-13 22:34:01,494 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 7847 transitions. Word has length 85 [2021-10-13 22:34:01,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:01,494 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 7847 transitions. [2021-10-13 22:34:01,494 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 22:34:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 7847 transitions. [2021-10-13 22:34:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 22:34:01,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:01,496 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 22:34:01,518 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 22:34:01,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:01,699 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:01,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1130768875, now seen corresponding path program 63 times [2021-10-13 22:34:01,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:01,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428622572] [2021-10-13 22:34:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:01,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:01,820 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 22:34:01,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:01,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428622572] [2021-10-13 22:34:01,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428622572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813898211] [2021-10-13 22:34:01,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:01,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:01,822 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 22:34:01,851 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 22:34:03,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:34:03,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:03,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:03,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:03,887 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 22:34:03,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813898211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:03,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:03,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-10-13 22:34:03,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142757506] [2021-10-13 22:34:03,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:03,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:03,888 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 22:34:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:04,384 INFO L93 Difference]: Finished difference Result 4016 states and 10836 transitions. [2021-10-13 22:34:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:34:04,389 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 22:34:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:04,394 INFO L225 Difference]: With dead ends: 4016 [2021-10-13 22:34:04,394 INFO L226 Difference]: Without dead ends: 3441 [2021-10-13 22:34:04,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 451.1ms TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:34:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-10-13 22:34:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 1924. [2021-10-13 22:34:04,418 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 22:34:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5256 transitions. [2021-10-13 22:34:04,422 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5256 transitions. Word has length 85 [2021-10-13 22:34:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:04,422 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 5256 transitions. [2021-10-13 22:34:04,422 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 22:34:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5256 transitions. [2021-10-13 22:34:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:04,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:04,424 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 22:34:04,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-13 22:34:04,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:04,624 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:04,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:04,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2127813953, now seen corresponding path program 64 times [2021-10-13 22:34:04,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:04,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094688296] [2021-10-13 22:34:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:04,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:04,791 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 22:34:04,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:04,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094688296] [2021-10-13 22:34:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094688296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:04,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449251385] [2021-10-13 22:34:04,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:04,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:04,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:04,792 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 22:34:04,793 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 22:34:06,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:06,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:06,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:06,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:07,025 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 22:34:07,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449251385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:07,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:07,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-10-13 22:34:07,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608910528] [2021-10-13 22:34:07,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:07,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:07,026 INFO L87 Difference]: Start difference. First operand 1924 states and 5256 transitions. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:07,287 INFO L93 Difference]: Finished difference Result 2864 states and 7456 transitions. [2021-10-13 22:34:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:07,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 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 22:34:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:07,291 INFO L225 Difference]: With dead ends: 2864 [2021-10-13 22:34:07,291 INFO L226 Difference]: Without dead ends: 2530 [2021-10-13 22:34:07,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 276.7ms TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:34:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-10-13 22:34:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2009. [2021-10-13 22:34:07,309 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 22:34:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 5426 transitions. [2021-10-13 22:34:07,312 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 5426 transitions. Word has length 90 [2021-10-13 22:34:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:07,312 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 5426 transitions. [2021-10-13 22:34:07,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 5426 transitions. [2021-10-13 22:34:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:07,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:07,314 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 22:34:07,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-13 22:34:07,515 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,SelfDestructingSolverStorable74 [2021-10-13 22:34:07,515 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash -946910843, now seen corresponding path program 65 times [2021-10-13 22:34:07,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:07,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77440134] [2021-10-13 22:34:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:07,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:07,687 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 22:34:07,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:07,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77440134] [2021-10-13 22:34:07,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77440134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:07,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951098832] [2021-10-13 22:34:07,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:07,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:07,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:07,688 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 22:34:07,690 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 22:34:09,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:34:09,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:09,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:09,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:09,905 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 22:34:09,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951098832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:09,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:09,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:34:09,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15403717] [2021-10-13 22:34:09,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:09,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:09,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:09,906 INFO L87 Difference]: Start difference. First operand 2009 states and 5426 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:10,104 INFO L93 Difference]: Finished difference Result 3386 states and 8437 transitions. [2021-10-13 22:34:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:34:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:34:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:10,108 INFO L225 Difference]: With dead ends: 3386 [2021-10-13 22:34:10,108 INFO L226 Difference]: Without dead ends: 3116 [2021-10-13 22:34:10,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 222.9ms TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:34:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-10-13 22:34:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2153. [2021-10-13 22:34:10,130 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 22:34:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5843 transitions. [2021-10-13 22:34:10,133 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5843 transitions. Word has length 90 [2021-10-13 22:34:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:10,133 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 5843 transitions. [2021-10-13 22:34:10,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5843 transitions. [2021-10-13 22:34:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:10,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:10,135 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 22:34:10,156 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 22:34:10,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:10,335 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1036286347, now seen corresponding path program 66 times [2021-10-13 22:34:10,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:10,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132203156] [2021-10-13 22:34:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:10,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:10,488 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 22:34:10,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:10,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132203156] [2021-10-13 22:34:10,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132203156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:10,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764546564] [2021-10-13 22:34:10,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:10,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:10,490 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 22:34:10,490 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 22:34:12,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:34:12,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:12,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:12,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:12,736 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 22:34:12,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764546564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:12,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:12,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:12,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752850769] [2021-10-13 22:34:12,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:12,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:12,737 INFO L87 Difference]: Start difference. First operand 2153 states and 5843 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 22:34:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:12,992 INFO L93 Difference]: Finished difference Result 3346 states and 8432 transitions. [2021-10-13 22:34:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:12,992 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 22:34:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:12,996 INFO L225 Difference]: With dead ends: 3346 [2021-10-13 22:34:12,996 INFO L226 Difference]: Without dead ends: 3076 [2021-10-13 22:34:12,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 268.2ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:34:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-10-13 22:34:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2228. [2021-10-13 22:34:13,051 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 22:34:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6068 transitions. [2021-10-13 22:34:13,054 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6068 transitions. Word has length 90 [2021-10-13 22:34:13,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:13,054 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 6068 transitions. [2021-10-13 22:34:13,054 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 22:34:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6068 transitions. [2021-10-13 22:34:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:13,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:13,056 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 22:34:13,077 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 22:34:13,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:13,256 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:13,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1568536445, now seen corresponding path program 67 times [2021-10-13 22:34:13,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:13,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586222886] [2021-10-13 22:34:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:13,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:13,414 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 22:34:13,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:13,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586222886] [2021-10-13 22:34:13,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586222886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:13,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586388885] [2021-10-13 22:34:13,414 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:13,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:13,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:13,415 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 22:34:13,416 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 22:34:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:15,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:15,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:15,670 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 22:34:15,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586388885] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:15,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:15,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:34:15,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097782212] [2021-10-13 22:34:15,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:15,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:15,671 INFO L87 Difference]: Start difference. First operand 2228 states and 6068 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:15,897 INFO L93 Difference]: Finished difference Result 3396 states and 8607 transitions. [2021-10-13 22:34:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:34:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:34:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:15,901 INFO L225 Difference]: With dead ends: 3396 [2021-10-13 22:34:15,901 INFO L226 Difference]: Without dead ends: 3126 [2021-10-13 22:34:15,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:34:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-13 22:34:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2303. [2021-10-13 22:34:15,924 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 22:34:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 6293 transitions. [2021-10-13 22:34:15,927 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 6293 transitions. Word has length 90 [2021-10-13 22:34:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:15,927 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 6293 transitions. [2021-10-13 22:34:15,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 6293 transitions. [2021-10-13 22:34:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:15,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:15,929 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 22:34:15,951 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 22:34:16,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:16,130 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:16,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:16,131 INFO L82 PathProgramCache]: Analyzing trace with hash 217624947, now seen corresponding path program 68 times [2021-10-13 22:34:16,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:16,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431703616] [2021-10-13 22:34:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:16,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:16,293 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 22:34:16,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:16,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431703616] [2021-10-13 22:34:16,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431703616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:16,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561446554] [2021-10-13 22:34:16,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:16,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:16,294 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 22:34:16,295 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 22:34:18,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:18,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:18,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:18,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:18,630 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 22:34:18,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561446554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:18,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:18,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:18,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502152018] [2021-10-13 22:34:18,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:18,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:18,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:18,631 INFO L87 Difference]: Start difference. First operand 2303 states and 6293 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 22:34:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:18,936 INFO L93 Difference]: Finished difference Result 3421 states and 8732 transitions. [2021-10-13 22:34:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:18,936 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 22:34:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:18,940 INFO L225 Difference]: With dead ends: 3421 [2021-10-13 22:34:18,940 INFO L226 Difference]: Without dead ends: 3151 [2021-10-13 22:34:18,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 312.8ms TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:34:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-10-13 22:34:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2378. [2021-10-13 22:34:18,963 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 22:34:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6518 transitions. [2021-10-13 22:34:18,966 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6518 transitions. Word has length 90 [2021-10-13 22:34:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:18,966 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 6518 transitions. [2021-10-13 22:34:18,966 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 22:34:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6518 transitions. [2021-10-13 22:34:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:18,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:18,968 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 22:34:18,991 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 22:34:19,168 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,SelfDestructingSolverStorable78 [2021-10-13 22:34:19,169 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash 147442945, now seen corresponding path program 69 times [2021-10-13 22:34:19,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:19,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887749151] [2021-10-13 22:34:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:19,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:19,323 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 22:34:19,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:19,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887749151] [2021-10-13 22:34:19,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887749151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:19,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515064676] [2021-10-13 22:34:19,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:19,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:19,325 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 22:34:19,325 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 22:34:21,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:34:21,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:21,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:34:21,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:21,647 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 22:34:21,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515064676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:21,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:21,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:34:21,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510079207] [2021-10-13 22:34:21,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:21,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:21,652 INFO L87 Difference]: Start difference. First operand 2378 states and 6518 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:21,911 INFO L93 Difference]: Finished difference Result 3446 states and 8857 transitions. [2021-10-13 22:34:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:34:21,911 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:34:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:21,915 INFO L225 Difference]: With dead ends: 3446 [2021-10-13 22:34:21,915 INFO L226 Difference]: Without dead ends: 3176 [2021-10-13 22:34:21,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 258.1ms TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:34:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-10-13 22:34:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2453. [2021-10-13 22:34:21,940 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 22:34:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 6743 transitions. [2021-10-13 22:34:21,943 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 6743 transitions. Word has length 90 [2021-10-13 22:34:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:21,944 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 6743 transitions. [2021-10-13 22:34:21,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 6743 transitions. [2021-10-13 22:34:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:21,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:21,946 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 22:34:21,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-13 22:34:22,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:22,146 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1021436401, now seen corresponding path program 70 times [2021-10-13 22:34:22,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:22,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894838774] [2021-10-13 22:34:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:22,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:22,306 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 22:34:22,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:22,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894838774] [2021-10-13 22:34:22,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894838774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:22,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371605474] [2021-10-13 22:34:22,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:22,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:22,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:22,308 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 22:34:22,308 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 22:34:24,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:24,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:24,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:24,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:24,688 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 22:34:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371605474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:24,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:24,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:24,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358207977] [2021-10-13 22:34:24,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:24,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:24,689 INFO L87 Difference]: Start difference. First operand 2453 states and 6743 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 22:34:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:25,034 INFO L93 Difference]: Finished difference Result 3471 states and 8982 transitions. [2021-10-13 22:34:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:25,035 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 22:34:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:25,039 INFO L225 Difference]: With dead ends: 3471 [2021-10-13 22:34:25,039 INFO L226 Difference]: Without dead ends: 3201 [2021-10-13 22:34:25,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 325.9ms TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:34:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2021-10-13 22:34:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2528. [2021-10-13 22:34:25,072 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 22:34:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 6968 transitions. [2021-10-13 22:34:25,076 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 6968 transitions. Word has length 90 [2021-10-13 22:34:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:25,077 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 6968 transitions. [2021-10-13 22:34:25,077 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 22:34:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 6968 transitions. [2021-10-13 22:34:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:25,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:25,079 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 22:34:25,102 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 22:34:25,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:25,280 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:25,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1516730111, now seen corresponding path program 71 times [2021-10-13 22:34:25,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:25,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192816778] [2021-10-13 22:34:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:25,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:25,440 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 22:34:25,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:25,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192816778] [2021-10-13 22:34:25,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192816778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:25,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811643056] [2021-10-13 22:34:25,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:25,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:25,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:25,441 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 22:34:25,442 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 22:34:27,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:34:27,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:27,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:27,814 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 22:34:27,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811643056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:27,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:27,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:34:27,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596759944] [2021-10-13 22:34:27,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:27,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:27,815 INFO L87 Difference]: Start difference. First operand 2528 states and 6968 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:28,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:28,139 INFO L93 Difference]: Finished difference Result 3496 states and 9107 transitions. [2021-10-13 22:34:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:34:28,139 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:34:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:28,143 INFO L225 Difference]: With dead ends: 3496 [2021-10-13 22:34:28,143 INFO L226 Difference]: Without dead ends: 3226 [2021-10-13 22:34:28,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 294.2ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:34:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-10-13 22:34:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2603. [2021-10-13 22:34:28,168 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 22:34:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7193 transitions. [2021-10-13 22:34:28,172 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7193 transitions. Word has length 90 [2021-10-13 22:34:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:28,172 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7193 transitions. [2021-10-13 22:34:28,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7193 transitions. [2021-10-13 22:34:28,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:28,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:28,174 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 22:34:28,197 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 22:34:28,374 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,SelfDestructingSolverStorable81 [2021-10-13 22:34:28,375 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1028130833, now seen corresponding path program 72 times [2021-10-13 22:34:28,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:28,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102509813] [2021-10-13 22:34:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:28,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:28,504 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 22:34:28,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:28,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102509813] [2021-10-13 22:34:28,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102509813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:28,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215202721] [2021-10-13 22:34:28,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:28,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:28,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:28,505 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 22:34:28,506 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 22:34:30,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-13 22:34:30,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:30,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:34:30,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:30,929 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 22:34:30,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215202721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:30,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:30,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:30,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511619689] [2021-10-13 22:34:30,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:30,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:30,931 INFO L87 Difference]: Start difference. First operand 2603 states and 7193 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 22:34:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:31,311 INFO L93 Difference]: Finished difference Result 3521 states and 9232 transitions. [2021-10-13 22:34:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:31,312 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 22:34:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:31,317 INFO L225 Difference]: With dead ends: 3521 [2021-10-13 22:34:31,317 INFO L226 Difference]: Without dead ends: 3251 [2021-10-13 22:34:31,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 339.7ms TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:34:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2021-10-13 22:34:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2678. [2021-10-13 22:34:31,357 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 22:34:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7418 transitions. [2021-10-13 22:34:31,363 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7418 transitions. Word has length 90 [2021-10-13 22:34:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:31,363 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7418 transitions. [2021-10-13 22:34:31,363 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 22:34:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7418 transitions. [2021-10-13 22:34:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:31,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:31,366 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 22:34:31,399 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 22:34:31,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:31,591 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash -118233475, now seen corresponding path program 73 times [2021-10-13 22:34:31,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:31,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939261309] [2021-10-13 22:34:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:31,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:31,738 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 22:34:31,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:31,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939261309] [2021-10-13 22:34:31,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939261309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:31,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127121236] [2021-10-13 22:34:31,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:31,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:31,740 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 22:34:31,741 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 22:34:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:34,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:34,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:34,256 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 22:34:34,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127121236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:34,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:34,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:34:34,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207501088] [2021-10-13 22:34:34,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:34,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:34,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:34,257 INFO L87 Difference]: Start difference. First operand 2678 states and 7418 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:34,573 INFO L93 Difference]: Finished difference Result 3591 states and 9477 transitions. [2021-10-13 22:34:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:34:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:34:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:34,578 INFO L225 Difference]: With dead ends: 3591 [2021-10-13 22:34:34,578 INFO L226 Difference]: Without dead ends: 3321 [2021-10-13 22:34:34,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 295.1ms TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:34:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-10-13 22:34:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2753. [2021-10-13 22:34:34,605 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 22:34:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7658 transitions. [2021-10-13 22:34:34,609 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7658 transitions. Word has length 90 [2021-10-13 22:34:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:34,609 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 7658 transitions. [2021-10-13 22:34:34,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7658 transitions. [2021-10-13 22:34:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:34,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:34,612 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 22:34:34,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:34,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:34,812 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash 13882221, now seen corresponding path program 74 times [2021-10-13 22:34:34,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:34,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548934326] [2021-10-13 22:34:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:34,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:34,935 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 22:34:34,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:34,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548934326] [2021-10-13 22:34:34,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548934326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:34,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238070353] [2021-10-13 22:34:34,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:34,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:34,937 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 22:34:34,937 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 22:34:37,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:37,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:37,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:37,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:37,462 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 22:34:37,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238070353] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:37,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:37,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:37,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285437214] [2021-10-13 22:34:37,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:37,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:37,464 INFO L87 Difference]: Start difference. First operand 2753 states and 7658 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 22:34:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:37,968 INFO L93 Difference]: Finished difference Result 4169 states and 11103 transitions. [2021-10-13 22:34:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:34:37,969 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 22:34:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:37,973 INFO L225 Difference]: With dead ends: 4169 [2021-10-13 22:34:37,973 INFO L226 Difference]: Without dead ends: 3546 [2021-10-13 22:34:37,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 409.7ms TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:34:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-10-13 22:34:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2828. [2021-10-13 22:34:37,998 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 22:34:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7888 transitions. [2021-10-13 22:34:38,002 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7888 transitions. Word has length 90 [2021-10-13 22:34:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:38,002 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7888 transitions. [2021-10-13 22:34:38,002 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 22:34:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7888 transitions. [2021-10-13 22:34:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:38,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:38,005 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 22:34:38,028 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 22:34:38,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:38,206 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:38,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:38,206 INFO L82 PathProgramCache]: Analyzing trace with hash -442500229, now seen corresponding path program 75 times [2021-10-13 22:34:38,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:38,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705689712] [2021-10-13 22:34:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:38,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:38,323 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 22:34:38,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:38,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705689712] [2021-10-13 22:34:38,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705689712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:38,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441914874] [2021-10-13 22:34:38,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:38,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:38,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:38,325 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 22:34:38,325 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 22:34:40,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:34:40,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:40,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:40,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:40,792 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 22:34:40,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441914874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:40,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:40,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 22:34:40,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855454640] [2021-10-13 22:34:40,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 22:34:40,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:40,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 22:34:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:34:40,794 INFO L87 Difference]: Start difference. First operand 2828 states and 7888 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:41,158 INFO L93 Difference]: Finished difference Result 4398 states and 11821 transitions. [2021-10-13 22:34:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:34:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 22:34:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:41,164 INFO L225 Difference]: With dead ends: 4398 [2021-10-13 22:34:41,164 INFO L226 Difference]: Without dead ends: 4128 [2021-10-13 22:34:41,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 308.1ms TimeCoverageRelationStatistics Valid=486, Invalid=1236, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:34:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2021-10-13 22:34:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3008. [2021-10-13 22:34:41,195 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 22:34:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 8447 transitions. [2021-10-13 22:34:41,199 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 8447 transitions. Word has length 90 [2021-10-13 22:34:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:41,199 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 8447 transitions. [2021-10-13 22:34:41,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 8447 transitions. [2021-10-13 22:34:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 22:34:41,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:41,202 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 22:34:41,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-13 22:34:41,402 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,SelfDestructingSolverStorable85 [2021-10-13 22:34:41,403 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:41,403 INFO L82 PathProgramCache]: Analyzing trace with hash -377257939, now seen corresponding path program 76 times [2021-10-13 22:34:41,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:41,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662427936] [2021-10-13 22:34:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:41,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:41,527 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 22:34:41,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:41,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662427936] [2021-10-13 22:34:41,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662427936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:41,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255055541] [2021-10-13 22:34:41,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:41,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:41,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:41,528 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 22:34:41,529 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 22:34:43,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:43,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:43,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 22:34:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:44,089 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 22:34:44,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255055541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:44,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:44,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 22:34:44,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298921816] [2021-10-13 22:34:44,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:44,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:44,090 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 22:34:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:44,545 INFO L93 Difference]: Finished difference Result 3885 states and 10521 transitions. [2021-10-13 22:34:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:34:44,545 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 22:34:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:44,550 INFO L225 Difference]: With dead ends: 3885 [2021-10-13 22:34:44,550 INFO L226 Difference]: Without dead ends: 3306 [2021-10-13 22:34:44,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 410.6ms TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:34:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2021-10-13 22:34:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 2113. [2021-10-13 22:34:44,572 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 22:34:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5778 transitions. [2021-10-13 22:34:44,574 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5778 transitions. Word has length 90 [2021-10-13 22:34:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:44,574 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 5778 transitions. [2021-10-13 22:34:44,575 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 22:34:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5778 transitions. [2021-10-13 22:34:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:44,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:44,576 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 22:34:44,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-10-13 22:34:44,777 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,SelfDestructingSolverStorable86 [2021-10-13 22:34:44,777 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:44,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1270641956, now seen corresponding path program 77 times [2021-10-13 22:34:44,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:44,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858025038] [2021-10-13 22:34:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:44,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:44,933 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 22:34:44,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:44,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858025038] [2021-10-13 22:34:44,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858025038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:44,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853954419] [2021-10-13 22:34:44,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:44,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:44,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:44,935 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 22:34:44,936 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 22:34:47,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:34:47,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:47,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:47,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:47,632 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 22:34:47,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853954419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:47,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:47,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:47,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803948672] [2021-10-13 22:34:47,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:47,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:47,633 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 22:34:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:47,875 INFO L93 Difference]: Finished difference Result 3131 states and 8017 transitions. [2021-10-13 22:34:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:34:47,875 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 22:34:47,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:47,878 INFO L225 Difference]: With dead ends: 3131 [2021-10-13 22:34:47,879 INFO L226 Difference]: Without dead ends: 2861 [2021-10-13 22:34:47,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 247.2ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:34:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-10-13 22:34:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2188. [2021-10-13 22:34:47,899 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 22:34:47,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6003 transitions. [2021-10-13 22:34:47,902 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6003 transitions. Word has length 95 [2021-10-13 22:34:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:47,902 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6003 transitions. [2021-10-13 22:34:47,902 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 22:34:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6003 transitions. [2021-10-13 22:34:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:47,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:47,904 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 22:34:47,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-10-13 22:34:48,104 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,SelfDestructingSolverStorable87 [2021-10-13 22:34:48,105 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1360017460, now seen corresponding path program 78 times [2021-10-13 22:34:48,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:48,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16574166] [2021-10-13 22:34:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:48,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:48,301 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 22:34:48,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:48,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16574166] [2021-10-13 22:34:48,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16574166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:48,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488883701] [2021-10-13 22:34:48,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:48,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:48,303 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 22:34:48,304 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 22:34:50,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:34:50,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:50,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:50,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:51,086 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 22:34:51,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488883701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:51,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:51,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:51,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596215089] [2021-10-13 22:34:51,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:51,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:51,087 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 22:34:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:51,401 INFO L93 Difference]: Finished difference Result 3451 states and 8732 transitions. [2021-10-13 22:34:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:34:51,402 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 22:34:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:51,406 INFO L225 Difference]: With dead ends: 3451 [2021-10-13 22:34:51,406 INFO L226 Difference]: Without dead ends: 3181 [2021-10-13 22:34:51,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 329.4ms TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-10-13 22:34:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2263. [2021-10-13 22:34:51,429 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 22:34:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6228 transitions. [2021-10-13 22:34:51,432 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6228 transitions. Word has length 95 [2021-10-13 22:34:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6228 transitions. [2021-10-13 22:34:51,432 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 22:34:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6228 transitions. [2021-10-13 22:34:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:51,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:51,434 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 22:34:51,458 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 22:34:51,634 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,SelfDestructingSolverStorable88 [2021-10-13 22:34:51,634 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1892267558, now seen corresponding path program 79 times [2021-10-13 22:34:51,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:51,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721716251] [2021-10-13 22:34:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:51,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:51,829 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 22:34:51,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:51,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721716251] [2021-10-13 22:34:51,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721716251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:51,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052807480] [2021-10-13 22:34:51,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:51,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:51,830 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 22:34:51,831 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 22:34:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:54,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:54,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:54,552 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 22:34:54,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052807480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:54,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:54,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:34:54,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308381970] [2021-10-13 22:34:54,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:34:54,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:34:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:34:54,553 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 22:34:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:54,838 INFO L93 Difference]: Finished difference Result 3481 states and 8867 transitions. [2021-10-13 22:34:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:34:54,839 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 22:34:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:54,844 INFO L225 Difference]: With dead ends: 3481 [2021-10-13 22:34:54,844 INFO L226 Difference]: Without dead ends: 3211 [2021-10-13 22:34:54,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 292.7ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-10-13 22:34:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2338. [2021-10-13 22:34:54,874 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 22:34:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6453 transitions. [2021-10-13 22:34:54,878 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6453 transitions. Word has length 95 [2021-10-13 22:34:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:54,878 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 6453 transitions. [2021-10-13 22:34:54,878 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 22:34:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6453 transitions. [2021-10-13 22:34:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:54,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:54,880 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 22:34:54,905 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 22:34:55,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:55,081 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash -106106166, now seen corresponding path program 80 times [2021-10-13 22:34:55,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:55,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839549101] [2021-10-13 22:34:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:55,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:55,353 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 22:34:55,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:55,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839549101] [2021-10-13 22:34:55,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839549101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:55,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130324330] [2021-10-13 22:34:55,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:55,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:55,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:55,355 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 22:34:55,356 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 22:34:57,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:57,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:57,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:34:57,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:58,216 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 22:34:58,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130324330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:58,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:58,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:34:58,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949841068] [2021-10-13 22:34:58,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:34:58,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:58,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:34:58,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:34:58,217 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 22:34:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:58,574 INFO L93 Difference]: Finished difference Result 3506 states and 8992 transitions. [2021-10-13 22:34:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:34:58,574 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 22:34:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:58,579 INFO L225 Difference]: With dead ends: 3506 [2021-10-13 22:34:58,579 INFO L226 Difference]: Without dead ends: 3236 [2021-10-13 22:34:58,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 352.7ms TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:34:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-10-13 22:34:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2413. [2021-10-13 22:34:58,607 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 22:34:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6678 transitions. [2021-10-13 22:34:58,610 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6678 transitions. Word has length 95 [2021-10-13 22:34:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:58,610 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 6678 transitions. [2021-10-13 22:34:58,610 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 22:34:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6678 transitions. [2021-10-13 22:34:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:34:58,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:58,612 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 22:34:58,637 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 22:34:58,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:58,813 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:58,813 INFO L82 PathProgramCache]: Analyzing trace with hash -176288168, now seen corresponding path program 81 times [2021-10-13 22:34:58,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:58,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920611214] [2021-10-13 22:34:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:58,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:58,953 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 22:34:58,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:58,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920611214] [2021-10-13 22:34:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920611214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:58,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437286872] [2021-10-13 22:34:58,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:58,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:58,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:58,955 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 22:34:58,956 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 22:35:01,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:01,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:01,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 22:35:01,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:01,809 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 22:35:01,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437286872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:01,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:01,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:35:01,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593727109] [2021-10-13 22:35:01,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:35:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:35:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:35:01,811 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 22:35:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:02,162 INFO L93 Difference]: Finished difference Result 3531 states and 9117 transitions. [2021-10-13 22:35:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:35:02,162 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 22:35:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:02,166 INFO L225 Difference]: With dead ends: 3531 [2021-10-13 22:35:02,166 INFO L226 Difference]: Without dead ends: 3261 [2021-10-13 22:35:02,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 288.4ms TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:35:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-10-13 22:35:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2488. [2021-10-13 22:35:02,192 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 22:35:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6903 transitions. [2021-10-13 22:35:02,196 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6903 transitions. Word has length 95 [2021-10-13 22:35:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:02,197 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6903 transitions. [2021-10-13 22:35:02,197 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 22:35:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6903 transitions. [2021-10-13 22:35:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:02,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:02,199 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 22:35:02,223 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 22:35:02,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:02,400 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash 697705288, now seen corresponding path program 82 times [2021-10-13 22:35:02,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:02,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514143985] [2021-10-13 22:35:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:02,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:02,549 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 22:35:02,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:02,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514143985] [2021-10-13 22:35:02,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514143985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:02,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098334683] [2021-10-13 22:35:02,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:02,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:02,550 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 22:35:02,552 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 22:35:05,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:05,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:05,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:05,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:05,455 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 22:35:05,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098334683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:05,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:05,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:35:05,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131520220] [2021-10-13 22:35:05,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:05,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:05,457 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 22:35:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:05,845 INFO L93 Difference]: Finished difference Result 3556 states and 9242 transitions. [2021-10-13 22:35:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:35:05,846 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 22:35:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:05,850 INFO L225 Difference]: With dead ends: 3556 [2021-10-13 22:35:05,850 INFO L226 Difference]: Without dead ends: 3286 [2021-10-13 22:35:05,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 364.2ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:35:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-10-13 22:35:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2563. [2021-10-13 22:35:05,880 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 22:35:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7128 transitions. [2021-10-13 22:35:05,884 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7128 transitions. Word has length 95 [2021-10-13 22:35:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:05,885 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 7128 transitions. [2021-10-13 22:35:05,885 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 22:35:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7128 transitions. [2021-10-13 22:35:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:05,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:05,889 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 22:35:05,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-13 22:35:06,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:06,107 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1192998998, now seen corresponding path program 83 times [2021-10-13 22:35:06,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:06,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493870990] [2021-10-13 22:35:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:06,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:06,293 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 22:35:06,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:06,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493870990] [2021-10-13 22:35:06,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493870990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:06,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195478114] [2021-10-13 22:35:06,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:06,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:06,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:06,294 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 22:35:06,295 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 22:35:08,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:08,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:08,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:09,154 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 22:35:09,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195478114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:09,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:09,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:35:09,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867791988] [2021-10-13 22:35:09,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:35:09,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:35:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:35:09,155 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 22:35:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:09,492 INFO L93 Difference]: Finished difference Result 3581 states and 9367 transitions. [2021-10-13 22:35:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:35:09,492 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 22:35:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:09,496 INFO L225 Difference]: With dead ends: 3581 [2021-10-13 22:35:09,496 INFO L226 Difference]: Without dead ends: 3311 [2021-10-13 22:35:09,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 310.8ms TimeCoverageRelationStatistics Valid=461, Invalid=1345, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:35:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-10-13 22:35:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2638. [2021-10-13 22:35:09,525 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 22:35:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7353 transitions. [2021-10-13 22:35:09,529 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7353 transitions. Word has length 95 [2021-10-13 22:35:09,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:09,529 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 7353 transitions. [2021-10-13 22:35:09,529 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 22:35:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7353 transitions. [2021-10-13 22:35:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:09,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:09,531 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 22:35:09,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-13 22:35:09,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:09,732 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:09,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:09,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1351861946, now seen corresponding path program 84 times [2021-10-13 22:35:09,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:09,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797952491] [2021-10-13 22:35:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:09,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:09,881 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 22:35:09,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:09,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797952491] [2021-10-13 22:35:09,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797952491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:09,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309865943] [2021-10-13 22:35:09,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:09,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:09,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:09,883 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 22:35:09,883 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 22:35:12,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:35:12,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:12,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:35:12,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:12,806 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 22:35:12,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309865943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:12,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:12,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:35:12,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111001896] [2021-10-13 22:35:12,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:12,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:12,807 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 22:35:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:13,282 INFO L93 Difference]: Finished difference Result 3606 states and 9492 transitions. [2021-10-13 22:35:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:35:13,283 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 22:35:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:13,287 INFO L225 Difference]: With dead ends: 3606 [2021-10-13 22:35:13,287 INFO L226 Difference]: Without dead ends: 3336 [2021-10-13 22:35:13,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 423.5ms TimeCoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:35:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-10-13 22:35:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2713. [2021-10-13 22:35:13,317 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 22:35:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7578 transitions. [2021-10-13 22:35:13,322 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7578 transitions. Word has length 95 [2021-10-13 22:35:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:13,322 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7578 transitions. [2021-10-13 22:35:13,323 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 22:35:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7578 transitions. [2021-10-13 22:35:13,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:13,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:13,325 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 22:35:13,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:13,531 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,SelfDestructingSolverStorable94 [2021-10-13 22:35:13,531 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:13,531 INFO L82 PathProgramCache]: Analyzing trace with hash -441964588, now seen corresponding path program 85 times [2021-10-13 22:35:13,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:13,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537619749] [2021-10-13 22:35:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:13,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:13,672 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 22:35:13,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:13,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537619749] [2021-10-13 22:35:13,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537619749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:13,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711524140] [2021-10-13 22:35:13,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:13,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:13,673 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 22:35:13,675 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 22:35:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:16,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:16,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:16,610 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 22:35:16,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711524140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:16,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:16,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:35:16,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408633064] [2021-10-13 22:35:16,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:35:16,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:35:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:35:16,611 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 22:35:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:16,969 INFO L93 Difference]: Finished difference Result 3631 states and 9617 transitions. [2021-10-13 22:35:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:35:16,970 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 22:35:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:16,974 INFO L225 Difference]: With dead ends: 3631 [2021-10-13 22:35:16,974 INFO L226 Difference]: Without dead ends: 3361 [2021-10-13 22:35:16,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 323.2ms TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:35:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-10-13 22:35:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2788. [2021-10-13 22:35:17,002 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 22:35:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7803 transitions. [2021-10-13 22:35:17,006 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7803 transitions. Word has length 95 [2021-10-13 22:35:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:17,006 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7803 transitions. [2021-10-13 22:35:17,006 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 22:35:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7803 transitions. [2021-10-13 22:35:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:17,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:17,009 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 22:35:17,033 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 22:35:17,211 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,SelfDestructingSolverStorable95 [2021-10-13 22:35:17,211 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash -309848892, now seen corresponding path program 86 times [2021-10-13 22:35:17,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:17,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571433101] [2021-10-13 22:35:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:17,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:17,346 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 22:35:17,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:17,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571433101] [2021-10-13 22:35:17,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571433101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:17,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068551803] [2021-10-13 22:35:17,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:17,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:17,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:17,348 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 22:35:17,348 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 22:35:20,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:20,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:20,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:20,328 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 22:35:20,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068551803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:20,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:20,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:35:20,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557465525] [2021-10-13 22:35:20,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:20,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:20,329 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 22:35:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:20,789 INFO L93 Difference]: Finished difference Result 3716 states and 9907 transitions. [2021-10-13 22:35:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:35:20,789 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 22:35:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:20,794 INFO L225 Difference]: With dead ends: 3716 [2021-10-13 22:35:20,794 INFO L226 Difference]: Without dead ends: 3446 [2021-10-13 22:35:20,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 416.3ms TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2021-10-13 22:35:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2863. [2021-10-13 22:35:20,826 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 22:35:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 8048 transitions. [2021-10-13 22:35:20,830 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 8048 transitions. Word has length 95 [2021-10-13 22:35:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:20,830 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 8048 transitions. [2021-10-13 22:35:20,830 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 22:35:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 8048 transitions. [2021-10-13 22:35:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:20,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:20,833 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 22:35:20,861 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 22:35:21,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:21,042 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:21,042 INFO L82 PathProgramCache]: Analyzing trace with hash -766231342, now seen corresponding path program 87 times [2021-10-13 22:35:21,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:21,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015406187] [2021-10-13 22:35:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:21,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:21,188 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 22:35:21,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:21,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015406187] [2021-10-13 22:35:21,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015406187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:21,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214258833] [2021-10-13 22:35:21,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:21,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:21,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:21,195 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 22:35:21,207 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 22:35:23,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:23,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:23,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:23,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:24,175 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 22:35:24,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214258833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:24,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:24,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 22:35:24,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95158193] [2021-10-13 22:35:24,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:35:24,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:35:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:35:24,176 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 22:35:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:24,570 INFO L93 Difference]: Finished difference Result 4458 states and 12031 transitions. [2021-10-13 22:35:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:35:24,570 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 22:35:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:24,577 INFO L225 Difference]: With dead ends: 4458 [2021-10-13 22:35:24,577 INFO L226 Difference]: Without dead ends: 4188 [2021-10-13 22:35:24,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 352.9ms TimeCoverageRelationStatistics Valid=626, Invalid=1536, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:35:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-10-13 22:35:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3043. [2021-10-13 22:35:24,615 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 22:35:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 8607 transitions. [2021-10-13 22:35:24,619 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 8607 transitions. Word has length 95 [2021-10-13 22:35:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:24,619 INFO L470 AbstractCegarLoop]: Abstraction has 3043 states and 8607 transitions. [2021-10-13 22:35:24,620 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 22:35:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 8607 transitions. [2021-10-13 22:35:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 22:35:24,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:24,622 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 22:35:24,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:24,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:24,822 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -700989052, now seen corresponding path program 88 times [2021-10-13 22:35:24,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:24,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471630314] [2021-10-13 22:35:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:24,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:25,008 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 22:35:25,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:25,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471630314] [2021-10-13 22:35:25,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471630314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:25,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823180204] [2021-10-13 22:35:25,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:25,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:25,011 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 22:35:25,043 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 22:35:27,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:27,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:27,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 22:35:27,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:28,144 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 22:35:28,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823180204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:28,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:28,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 22:35:28,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51400801] [2021-10-13 22:35:28,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:28,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:28,145 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 22:35:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:28,633 INFO L93 Difference]: Finished difference Result 3920 states and 10681 transitions. [2021-10-13 22:35:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:35:28,633 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 22:35:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:28,638 INFO L225 Difference]: With dead ends: 3920 [2021-10-13 22:35:28,638 INFO L226 Difference]: Without dead ends: 3431 [2021-10-13 22:35:28,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 452.1ms TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:35:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2021-10-13 22:35:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2034. [2021-10-13 22:35:28,663 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 22:35:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 5566 transitions. [2021-10-13 22:35:28,666 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 5566 transitions. Word has length 95 [2021-10-13 22:35:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:28,666 INFO L470 AbstractCegarLoop]: Abstraction has 2034 states and 5566 transitions. [2021-10-13 22:35:28,666 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 22:35:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 5566 transitions. [2021-10-13 22:35:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:28,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:28,668 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 22:35:28,701 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 22:35:28,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:28,869 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1226377678, now seen corresponding path program 89 times [2021-10-13 22:35:28,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679766628] [2021-10-13 22:35:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:28,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:29,104 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 22:35:29,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:29,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679766628] [2021-10-13 22:35:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679766628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:29,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426814651] [2021-10-13 22:35:29,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:29,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:29,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:29,106 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 22:35:29,106 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 22:35:31,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:31,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:31,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:35:31,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:32,422 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 22:35:32,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426814651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:32,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:32,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:35:32,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293020728] [2021-10-13 22:35:32,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:35:32,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:35:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:35:32,423 INFO L87 Difference]: Start difference. First operand 2034 states and 5566 transitions. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:32,725 INFO L93 Difference]: Finished difference Result 3024 states and 7866 transitions. [2021-10-13 22:35:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:32,725 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 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 22:35:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:32,729 INFO L225 Difference]: With dead ends: 3024 [2021-10-13 22:35:32,729 INFO L226 Difference]: Without dead ends: 2690 [2021-10-13 22:35:32,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 360.4ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:35:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-10-13 22:35:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2119. [2021-10-13 22:35:32,748 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 22:35:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 5736 transitions. [2021-10-13 22:35:32,768 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 5736 transitions. Word has length 100 [2021-10-13 22:35:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:32,768 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 5736 transitions. [2021-10-13 22:35:32,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 5736 transitions. [2021-10-13 22:35:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:32,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:32,770 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 22:35:32,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:32,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:32,970 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:32,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1710563978, now seen corresponding path program 90 times [2021-10-13 22:35:32,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:32,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252951090] [2021-10-13 22:35:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:32,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:33,150 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 22:35:33,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:33,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252951090] [2021-10-13 22:35:33,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252951090] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:33,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838321955] [2021-10-13 22:35:33,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:33,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:33,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:33,151 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 22:35:33,152 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 22:35:36,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:35:36,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:36,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:36,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:36,486 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 22:35:36,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838321955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:36,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:36,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:36,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075951006] [2021-10-13 22:35:36,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:36,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:36,487 INFO L87 Difference]: Start difference. First operand 2119 states and 5736 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:35:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:36,720 INFO L93 Difference]: Finished difference Result 3646 states and 9047 transitions. [2021-10-13 22:35:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:35:36,720 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:35:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:36,724 INFO L225 Difference]: With dead ends: 3646 [2021-10-13 22:35:36,724 INFO L226 Difference]: Without dead ends: 3376 [2021-10-13 22:35:36,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 257.5ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:35:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2021-10-13 22:35:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2263. [2021-10-13 22:35:36,757 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 22:35:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6153 transitions. [2021-10-13 22:35:36,760 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6153 transitions. Word has length 100 [2021-10-13 22:35:36,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:36,760 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6153 transitions. [2021-10-13 22:35:36,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:35:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6153 transitions. [2021-10-13 22:35:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:36,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:36,762 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 22:35:36,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-10-13 22:35:36,963 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,SelfDestructingSolverStorable100 [2021-10-13 22:35:36,963 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:36,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1577299558, now seen corresponding path program 91 times [2021-10-13 22:35:36,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:36,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127476990] [2021-10-13 22:35:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:36,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:37,198 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 22:35:37,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:37,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127476990] [2021-10-13 22:35:37,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127476990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:37,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109241464] [2021-10-13 22:35:37,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:37,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:37,199 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 22:35:37,200 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 22:35:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:40,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:40,191 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 22:35:40,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109241464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:40,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:40,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:40,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467292239] [2021-10-13 22:35:40,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:40,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:40,604 INFO L87 Difference]: Start difference. First operand 2263 states and 6153 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 22:35:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:40,901 INFO L93 Difference]: Finished difference Result 3606 states and 9042 transitions. [2021-10-13 22:35:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:40,901 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 22:35:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:40,905 INFO L225 Difference]: With dead ends: 3606 [2021-10-13 22:35:40,906 INFO L226 Difference]: Without dead ends: 3336 [2021-10-13 22:35:40,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 323.3ms TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:35:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-10-13 22:35:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2338. [2021-10-13 22:35:40,929 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 22:35:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6378 transitions. [2021-10-13 22:35:40,932 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6378 transitions. Word has length 100 [2021-10-13 22:35:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:40,933 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 6378 transitions. [2021-10-13 22:35:40,933 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 22:35:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6378 transitions. [2021-10-13 22:35:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:40,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:40,935 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 22:35:40,960 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 22:35:41,135 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,SelfDestructingSolverStorable101 [2021-10-13 22:35:41,135 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1712420596, now seen corresponding path program 92 times [2021-10-13 22:35:41,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:41,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814559077] [2021-10-13 22:35:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:41,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:41,320 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 22:35:41,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:41,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814559077] [2021-10-13 22:35:41,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814559077] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:41,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664506869] [2021-10-13 22:35:41,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:41,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:41,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:41,321 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 22:35:41,322 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 22:35:44,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:44,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:44,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:44,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:44,673 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 22:35:44,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664506869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:44,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:44,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:44,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551866332] [2021-10-13 22:35:44,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:44,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:44,674 INFO L87 Difference]: Start difference. First operand 2338 states and 6378 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:35:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:44,941 INFO L93 Difference]: Finished difference Result 3656 states and 9217 transitions. [2021-10-13 22:35:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:35:44,941 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:35:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:44,945 INFO L225 Difference]: With dead ends: 3656 [2021-10-13 22:35:44,946 INFO L226 Difference]: Without dead ends: 3386 [2021-10-13 22:35:44,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 274.2ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:35:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-10-13 22:35:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2413. [2021-10-13 22:35:44,971 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 22:35:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6603 transitions. [2021-10-13 22:35:44,974 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6603 transitions. Word has length 100 [2021-10-13 22:35:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:44,974 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 6603 transitions. [2021-10-13 22:35:44,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:35:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6603 transitions. [2021-10-13 22:35:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:44,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:44,977 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 22:35:45,003 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 22:35:45,177 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,SelfDestructingSolverStorable102 [2021-10-13 22:35:45,178 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1623045092, now seen corresponding path program 93 times [2021-10-13 22:35:45,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:45,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738888807] [2021-10-13 22:35:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:45,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:45,410 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 22:35:45,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:45,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738888807] [2021-10-13 22:35:45,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738888807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:45,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823157870] [2021-10-13 22:35:45,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:45,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:45,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:45,411 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 22:35:45,412 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 22:35:48,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:35:48,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:48,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 22:35:48,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:48,756 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 22:35:48,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823157870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:48,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:48,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:48,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635756527] [2021-10-13 22:35:48,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:48,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:48,758 INFO L87 Difference]: Start difference. First operand 2413 states and 6603 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 22:35:49,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:49,078 INFO L93 Difference]: Finished difference Result 3681 states and 9342 transitions. [2021-10-13 22:35:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:49,079 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 22:35:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:49,083 INFO L225 Difference]: With dead ends: 3681 [2021-10-13 22:35:49,083 INFO L226 Difference]: Without dead ends: 3411 [2021-10-13 22:35:49,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 379.1ms TimeCoverageRelationStatistics Valid=359, Invalid=1201, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:35:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-10-13 22:35:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2488. [2021-10-13 22:35:49,139 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 22:35:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6828 transitions. [2021-10-13 22:35:49,142 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6828 transitions. Word has length 100 [2021-10-13 22:35:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:49,142 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 6828 transitions. [2021-10-13 22:35:49,142 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 22:35:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6828 transitions. [2021-10-13 22:35:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:49,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:49,145 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 22:35:49,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:49,346 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,SelfDestructingSolverStorable103 [2021-10-13 22:35:49,347 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:49,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1090794994, now seen corresponding path program 94 times [2021-10-13 22:35:49,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:49,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636174040] [2021-10-13 22:35:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:49,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:49,515 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 22:35:49,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:49,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636174040] [2021-10-13 22:35:49,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636174040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:49,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776104683] [2021-10-13 22:35:49,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:49,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:49,517 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 22:35:49,517 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 22:35:52,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:52,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:52,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:52,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:52,950 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 22:35:52,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776104683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:52,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:52,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:35:52,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724456278] [2021-10-13 22:35:52,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:35:52,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:35:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:35:52,951 INFO L87 Difference]: Start difference. First operand 2488 states and 6828 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:35:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:53,277 INFO L93 Difference]: Finished difference Result 3706 states and 9467 transitions. [2021-10-13 22:35:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:35:53,278 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:35:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:53,282 INFO L225 Difference]: With dead ends: 3706 [2021-10-13 22:35:53,282 INFO L226 Difference]: Without dead ends: 3436 [2021-10-13 22:35:53,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:35:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-10-13 22:35:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 2563. [2021-10-13 22:35:53,312 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 22:35:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7053 transitions. [2021-10-13 22:35:53,316 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7053 transitions. Word has length 100 [2021-10-13 22:35:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:53,316 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 7053 transitions. [2021-10-13 22:35:53,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:35:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7053 transitions. [2021-10-13 22:35:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:53,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:53,319 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 22:35:53,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-13 22:35:53,533 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,SelfDestructingSolverStorable104 [2021-10-13 22:35:53,533 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:53,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1418010910, now seen corresponding path program 95 times [2021-10-13 22:35:53,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:53,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177089570] [2021-10-13 22:35:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:53,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:53,738 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 22:35:53,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:53,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177089570] [2021-10-13 22:35:53,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177089570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:53,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974560096] [2021-10-13 22:35:53,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:53,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:53,740 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 22:35:53,741 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 22:35:56,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:35:56,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:56,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:35:56,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:57,263 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 22:35:57,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974560096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:57,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:57,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:35:57,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333526186] [2021-10-13 22:35:57,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:57,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:57,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:57,264 INFO L87 Difference]: Start difference. First operand 2563 states and 7053 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 22:35:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:57,672 INFO L93 Difference]: Finished difference Result 3731 states and 9592 transitions. [2021-10-13 22:35:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:35:57,672 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 22:35:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:57,677 INFO L225 Difference]: With dead ends: 3731 [2021-10-13 22:35:57,677 INFO L226 Difference]: Without dead ends: 3461 [2021-10-13 22:35:57,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 401.5ms TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:35:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-10-13 22:35:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2638. [2021-10-13 22:35:57,704 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 22:35:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7278 transitions. [2021-10-13 22:35:57,707 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7278 transitions. Word has length 100 [2021-10-13 22:35:57,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:57,707 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 7278 transitions. [2021-10-13 22:35:57,707 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 22:35:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7278 transitions. [2021-10-13 22:35:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:35:57,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:57,710 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 22:35:57,736 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 22:35:57,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:57,910 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:57,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1488192912, now seen corresponding path program 96 times [2021-10-13 22:35:57,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:57,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515016547] [2021-10-13 22:35:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:57,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:58,159 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 22:35:58,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:58,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515016547] [2021-10-13 22:35:58,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515016547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:58,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59215081] [2021-10-13 22:35:58,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:58,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:58,160 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 22:35:58,161 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 22:36:01,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:36:01,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:01,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:01,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:01,618 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 22:36:01,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59215081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:01,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:01,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:36:01,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791788439] [2021-10-13 22:36:01,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:36:01,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:36:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:36:01,620 INFO L87 Difference]: Start difference. First operand 2638 states and 7278 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:01,974 INFO L93 Difference]: Finished difference Result 3756 states and 9717 transitions. [2021-10-13 22:36:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:36:01,974 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:36:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:01,979 INFO L225 Difference]: With dead ends: 3756 [2021-10-13 22:36:01,979 INFO L226 Difference]: Without dead ends: 3486 [2021-10-13 22:36:01,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 345.5ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:36:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2021-10-13 22:36:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 2713. [2021-10-13 22:36:02,040 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 22:36:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7503 transitions. [2021-10-13 22:36:02,043 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7503 transitions. Word has length 100 [2021-10-13 22:36:02,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:02,043 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 7503 transitions. [2021-10-13 22:36:02,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:02,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7503 transitions. [2021-10-13 22:36:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:02,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:02,046 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 22:36:02,072 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 22:36:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:02,247 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash -614199456, now seen corresponding path program 97 times [2021-10-13 22:36:02,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:02,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582723392] [2021-10-13 22:36:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:02,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:02,430 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 22:36:02,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:02,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582723392] [2021-10-13 22:36:02,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582723392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:02,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739469232] [2021-10-13 22:36:02,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:02,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:02,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:02,431 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 22:36:02,432 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 22:36:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:05,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:05,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:05,936 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 22:36:05,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739469232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:05,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:05,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:36:05,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011710635] [2021-10-13 22:36:05,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:36:05,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:36:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:36:05,937 INFO L87 Difference]: Start difference. First operand 2713 states and 7503 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 22:36:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:06,433 INFO L93 Difference]: Finished difference Result 3781 states and 9842 transitions. [2021-10-13 22:36:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:36:06,434 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 22:36:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:06,438 INFO L225 Difference]: With dead ends: 3781 [2021-10-13 22:36:06,438 INFO L226 Difference]: Without dead ends: 3511 [2021-10-13 22:36:06,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 470.6ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2021-10-13 22:36:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2788. [2021-10-13 22:36:06,466 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 22:36:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7728 transitions. [2021-10-13 22:36:06,470 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7728 transitions. Word has length 100 [2021-10-13 22:36:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:06,470 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 7728 transitions. [2021-10-13 22:36:06,470 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 22:36:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7728 transitions. [2021-10-13 22:36:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:06,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:06,472 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 22:36:06,499 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 22:36:06,674 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,SelfDestructingSolverStorable107 [2021-10-13 22:36:06,675 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:06,675 INFO L82 PathProgramCache]: Analyzing trace with hash -118905746, now seen corresponding path program 98 times [2021-10-13 22:36:06,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:06,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239011735] [2021-10-13 22:36:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:06,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:06,873 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 22:36:06,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:06,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239011735] [2021-10-13 22:36:06,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239011735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:06,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160407849] [2021-10-13 22:36:06,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:06,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:06,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:06,875 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 22:36:06,875 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 22:36:10,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:10,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:10,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:10,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:10,475 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 22:36:10,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160407849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:10,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:10,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:36:10,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726818199] [2021-10-13 22:36:10,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:36:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:36:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:36:10,477 INFO L87 Difference]: Start difference. First operand 2788 states and 7728 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:10,877 INFO L93 Difference]: Finished difference Result 3806 states and 9967 transitions. [2021-10-13 22:36:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:36:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:36:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:10,881 INFO L225 Difference]: With dead ends: 3806 [2021-10-13 22:36:10,881 INFO L226 Difference]: Without dead ends: 3536 [2021-10-13 22:36:10,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 340.0ms TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:36:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2021-10-13 22:36:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2863. [2021-10-13 22:36:10,910 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 22:36:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7953 transitions. [2021-10-13 22:36:10,914 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7953 transitions. Word has length 100 [2021-10-13 22:36:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:10,914 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 7953 transitions. [2021-10-13 22:36:10,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7953 transitions. [2021-10-13 22:36:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:10,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:10,917 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 22:36:10,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:11,117 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,SelfDestructingSolverStorable108 [2021-10-13 22:36:11,118 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:11,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1631200606, now seen corresponding path program 99 times [2021-10-13 22:36:11,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:11,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422541897] [2021-10-13 22:36:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:11,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:11,273 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 22:36:11,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:11,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422541897] [2021-10-13 22:36:11,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422541897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:11,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215910676] [2021-10-13 22:36:11,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:11,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:11,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:11,275 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 22:36:11,275 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 22:36:14,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-13 22:36:14,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:14,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:36:14,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:14,901 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 22:36:14,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215910676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:14,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:14,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:36:14,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652813200] [2021-10-13 22:36:14,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:36:14,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:36:14,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:36:14,902 INFO L87 Difference]: Start difference. First operand 2863 states and 7953 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 22:36:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:15,359 INFO L93 Difference]: Finished difference Result 3831 states and 10092 transitions. [2021-10-13 22:36:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:36:15,359 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 22:36:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:15,364 INFO L225 Difference]: With dead ends: 3831 [2021-10-13 22:36:15,364 INFO L226 Difference]: Without dead ends: 3561 [2021-10-13 22:36:15,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 413.2ms TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-10-13 22:36:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2938. [2021-10-13 22:36:15,396 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 22:36:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8178 transitions. [2021-10-13 22:36:15,400 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8178 transitions. Word has length 100 [2021-10-13 22:36:15,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:15,400 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 8178 transitions. [2021-10-13 22:36:15,400 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 22:36:15,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8178 transitions. [2021-10-13 22:36:15,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:15,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:15,403 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 22:36:15,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-13 22:36:15,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:15,604 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1753869332, now seen corresponding path program 100 times [2021-10-13 22:36:15,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:15,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913943429] [2021-10-13 22:36:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:15,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:15,806 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 22:36:15,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:15,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913943429] [2021-10-13 22:36:15,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913943429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:15,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802901056] [2021-10-13 22:36:15,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:15,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:15,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:15,808 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 22:36:15,808 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 22:36:19,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:19,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:19,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:19,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:19,347 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 22:36:19,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802901056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:19,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:19,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:36:19,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13551058] [2021-10-13 22:36:19,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:36:19,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:36:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:36:19,348 INFO L87 Difference]: Start difference. First operand 2938 states and 8178 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:19,739 INFO L93 Difference]: Finished difference Result 3856 states and 10217 transitions. [2021-10-13 22:36:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:36:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:36:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:19,744 INFO L225 Difference]: With dead ends: 3856 [2021-10-13 22:36:19,744 INFO L226 Difference]: Without dead ends: 3586 [2021-10-13 22:36:19,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 357.0ms TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-10-13 22:36:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3013. [2021-10-13 22:36:19,777 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 22:36:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8403 transitions. [2021-10-13 22:36:19,782 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8403 transitions. Word has length 100 [2021-10-13 22:36:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:19,782 INFO L470 AbstractCegarLoop]: Abstraction has 3013 states and 8403 transitions. [2021-10-13 22:36:19,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8403 transitions. [2021-10-13 22:36:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:19,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:19,785 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 22:36:19,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-13 22:36:19,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:19,986 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:19,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1621753636, now seen corresponding path program 101 times [2021-10-13 22:36:19,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:19,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765160161] [2021-10-13 22:36:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:19,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:20,192 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 22:36:20,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:20,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765160161] [2021-10-13 22:36:20,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765160161] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:20,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029118975] [2021-10-13 22:36:20,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:20,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:20,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:20,193 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 22:36:20,194 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 22:36:23,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 22:36:23,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:23,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:23,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:23,802 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 22:36:23,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029118975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:23,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:23,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 22:36:23,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205195109] [2021-10-13 22:36:23,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:36:23,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:36:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:36:23,803 INFO L87 Difference]: Start difference. First operand 3013 states and 8403 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 22:36:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:24,322 INFO L93 Difference]: Finished difference Result 3941 states and 10507 transitions. [2021-10-13 22:36:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:36:24,322 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 22:36:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:24,327 INFO L225 Difference]: With dead ends: 3941 [2021-10-13 22:36:24,327 INFO L226 Difference]: Without dead ends: 3671 [2021-10-13 22:36:24,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 479.4ms TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:36:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-10-13 22:36:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3088. [2021-10-13 22:36:24,373 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 22:36:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8648 transitions. [2021-10-13 22:36:24,378 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8648 transitions. Word has length 100 [2021-10-13 22:36:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:24,378 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 8648 transitions. [2021-10-13 22:36:24,378 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 22:36:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8648 transitions. [2021-10-13 22:36:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:24,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:24,380 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 22:36:24,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-10-13 22:36:24,581 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,SelfDestructingSolverStorable111 [2021-10-13 22:36:24,581 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2078136086, now seen corresponding path program 102 times [2021-10-13 22:36:24,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:24,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873473302] [2021-10-13 22:36:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:24,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:24,773 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 22:36:24,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:24,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873473302] [2021-10-13 22:36:24,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873473302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:24,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698559666] [2021-10-13 22:36:24,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:24,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:24,774 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 22:36:24,774 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 22:36:28,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 22:36:28,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:28,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:28,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:28,390 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 22:36:28,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698559666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:28,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:28,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 22:36:28,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779243687] [2021-10-13 22:36:28,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:36:28,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:36:28,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:36:28,391 INFO L87 Difference]: Start difference. First operand 3088 states and 8648 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:28,840 INFO L93 Difference]: Finished difference Result 4708 states and 12681 transitions. [2021-10-13 22:36:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:36:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 100 [2021-10-13 22:36:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:28,847 INFO L225 Difference]: With dead ends: 4708 [2021-10-13 22:36:28,847 INFO L226 Difference]: Without dead ends: 4438 [2021-10-13 22:36:28,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 384.0ms TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:36:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-10-13 22:36:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3268. [2021-10-13 22:36:28,886 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 22:36:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 9207 transitions. [2021-10-13 22:36:28,892 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 9207 transitions. Word has length 100 [2021-10-13 22:36:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:28,892 INFO L470 AbstractCegarLoop]: Abstraction has 3268 states and 9207 transitions. [2021-10-13 22:36:28,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 22:36:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 9207 transitions. [2021-10-13 22:36:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 22:36:28,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:28,895 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 22:36:28,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-13 22:36:29,095 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,SelfDestructingSolverStorable112 [2021-10-13 22:36:29,095 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:29,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:29,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2012893796, now seen corresponding path program 103 times [2021-10-13 22:36:29,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:29,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569883172] [2021-10-13 22:36:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:29,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:29,292 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 22:36:29,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:29,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569883172] [2021-10-13 22:36:29,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569883172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:29,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857627875] [2021-10-13 22:36:29,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:29,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:29,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:29,294 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 22:36:29,294 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 22:36:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:32,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:36:32,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:33,005 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 22:36:33,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857627875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:33,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:33,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-13 22:36:33,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706371075] [2021-10-13 22:36:33,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:33,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:33,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:33,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:33,007 INFO L87 Difference]: Start difference. First operand 3268 states and 9207 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:33,624 INFO L93 Difference]: Finished difference Result 4651 states and 12541 transitions. [2021-10-13 22:36:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:36:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 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 22:36:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:33,630 INFO L225 Difference]: With dead ends: 4651 [2021-10-13 22:36:33,630 INFO L226 Difference]: Without dead ends: 4076 [2021-10-13 22:36:33,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 576.7ms TimeCoverageRelationStatistics Valid=804, Invalid=2276, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:36:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-13 22:36:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-10-13 22:36:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:36:33,670 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 100 [2021-10-13 22:36:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:33,670 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:36:33,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:36:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:33,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:33,673 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 22:36:33,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:33,874 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,SelfDestructingSolverStorable113 [2021-10-13 22:36:33,874 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:33,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:33,874 INFO L82 PathProgramCache]: Analyzing trace with hash -522543603, now seen corresponding path program 104 times [2021-10-13 22:36:33,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:33,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725529157] [2021-10-13 22:36:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:33,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:34,065 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 22:36:34,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:34,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725529157] [2021-10-13 22:36:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725529157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:34,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599467402] [2021-10-13 22:36:34,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:34,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:34,066 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 22:36:34,067 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 22:36:37,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:37,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:37,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:37,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:37,909 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 22:36:37,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599467402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:37,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:37,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:37,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047049326] [2021-10-13 22:36:37,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:37,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:37,910 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:36:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:38,197 INFO L93 Difference]: Finished difference Result 4346 states and 11497 transitions. [2021-10-13 22:36:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:36:38,197 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 22:36:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:38,202 INFO L225 Difference]: With dead ends: 4346 [2021-10-13 22:36:38,202 INFO L226 Difference]: Without dead ends: 4076 [2021-10-13 22:36:38,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 310.2ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:36:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-13 22:36:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-10-13 22:36:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:36:38,238 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:36:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:38,239 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:36:38,239 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 22:36:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:36:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:38,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:38,242 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 22:36:38,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:38,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:38,442 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:38,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1529647363, now seen corresponding path program 105 times [2021-10-13 22:36:38,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:38,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838901695] [2021-10-13 22:36:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:38,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:38,644 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 22:36:38,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:38,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838901695] [2021-10-13 22:36:38,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838901695] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:38,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110345818] [2021-10-13 22:36:38,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:38,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:38,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:38,645 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 22:36:38,646 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 22:36:42,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:36:42,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:42,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:42,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:42,561 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 22:36:42,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110345818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:42,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:42,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:42,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795095880] [2021-10-13 22:36:42,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:42,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:42,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:42,562 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:36:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:42,907 INFO L93 Difference]: Finished difference Result 4641 states and 12087 transitions. [2021-10-13 22:36:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:36:42,907 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 22:36:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:42,913 INFO L225 Difference]: With dead ends: 4641 [2021-10-13 22:36:42,913 INFO L226 Difference]: Without dead ends: 4371 [2021-10-13 22:36:42,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 368.2ms TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:36:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-10-13 22:36:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3303. [2021-10-13 22:36:42,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:36:42,953 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:36:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:42,953 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:36:42,953 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 22:36:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:36:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:42,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:42,956 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 22:36:42,983 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 22:36:43,157 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,SelfDestructingSolverStorable115 [2021-10-13 22:36:43,157 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:43,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1394526325, now seen corresponding path program 106 times [2021-10-13 22:36:43,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:43,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77716020] [2021-10-13 22:36:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:43,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:43,475 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 22:36:43,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:43,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77716020] [2021-10-13 22:36:43,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77716020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:43,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163767190] [2021-10-13 22:36:43,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:43,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:43,479 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 22:36:43,486 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 22:36:46,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:46,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:46,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:46,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:47,323 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 22:36:47,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163767190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:47,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:47,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:47,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588913485] [2021-10-13 22:36:47,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:47,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:47,324 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:36:47,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:47,640 INFO L93 Difference]: Finished difference Result 4596 states and 11997 transitions. [2021-10-13 22:36:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:36:47,641 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 22:36:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:47,646 INFO L225 Difference]: With dead ends: 4596 [2021-10-13 22:36:47,646 INFO L226 Difference]: Without dead ends: 4326 [2021-10-13 22:36:47,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 366.9ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:36:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-10-13 22:36:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3303. [2021-10-13 22:36:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:36:47,686 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:36:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:47,687 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:36:47,687 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 22:36:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:36:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:47,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:47,690 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 22:36:47,717 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 22:36:47,890 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,SelfDestructingSolverStorable116 [2021-10-13 22:36:47,890 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:47,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1483901829, now seen corresponding path program 107 times [2021-10-13 22:36:47,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:47,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030899906] [2021-10-13 22:36:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:47,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:48,173 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 22:36:48,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:48,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030899906] [2021-10-13 22:36:48,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030899906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:48,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254610140] [2021-10-13 22:36:48,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:48,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:48,175 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 22:36:48,175 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 22:36:51,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:36:51,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:51,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:51,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:52,207 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 22:36:52,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254610140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:52,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:52,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:36:52,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708908527] [2021-10-13 22:36:52,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:36:52,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:36:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:36:52,208 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:36:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:52,589 INFO L93 Difference]: Finished difference Result 4546 states and 11897 transitions. [2021-10-13 22:36:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:36:52,590 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 22:36:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:52,595 INFO L225 Difference]: With dead ends: 4546 [2021-10-13 22:36:52,595 INFO L226 Difference]: Without dead ends: 4276 [2021-10-13 22:36:52,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 400.7ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-10-13 22:36:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3303. [2021-10-13 22:36:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:36:52,628 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:36:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:52,629 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:36:52,629 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 22:36:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:36:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:52,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:52,631 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 22:36:52,659 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 22:36:52,832 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,SelfDestructingSolverStorable117 [2021-10-13 22:36:52,832 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:52,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2016151927, now seen corresponding path program 108 times [2021-10-13 22:36:52,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:52,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690461134] [2021-10-13 22:36:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:52,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:53,007 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 22:36:53,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:53,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690461134] [2021-10-13 22:36:53,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690461134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:53,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527002196] [2021-10-13 22:36:53,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:53,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:53,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:53,009 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 22:36:53,009 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 22:36:56,633 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:36:56,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:56,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:36:56,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:56,964 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 22:36:56,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527002196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:56,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:56,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:36:56,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894608248] [2021-10-13 22:36:56,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:36:56,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:36:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:36:56,965 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:36:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:57,303 INFO L93 Difference]: Finished difference Result 4496 states and 11797 transitions. [2021-10-13 22:36:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:36:57,303 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 22:36:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:57,308 INFO L225 Difference]: With dead ends: 4496 [2021-10-13 22:36:57,308 INFO L226 Difference]: Without dead ends: 4226 [2021-10-13 22:36:57,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 340.1ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:36:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-10-13 22:36:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3303. [2021-10-13 22:36:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:36:57,342 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:36:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:57,342 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:36:57,343 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 22:36:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:36:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:36:57,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:57,345 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 22:36:57,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:57,545 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,SelfDestructingSolverStorable118 [2021-10-13 22:36:57,546 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash -229990535, now seen corresponding path program 109 times [2021-10-13 22:36:57,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:57,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551555102] [2021-10-13 22:36:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:57,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:57,761 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 22:36:57,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:57,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551555102] [2021-10-13 22:36:57,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551555102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:57,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735258337] [2021-10-13 22:36:57,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:57,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:57,763 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 22:36:57,764 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 22:37:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:37:01,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:01,893 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 22:37:01,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735258337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:01,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:01,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:37:01,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518072417] [2021-10-13 22:37:01,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:01,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:01,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:01,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:01,895 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:02,325 INFO L93 Difference]: Finished difference Result 4446 states and 11697 transitions. [2021-10-13 22:37:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:37:02,325 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 22:37:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:02,331 INFO L225 Difference]: With dead ends: 4446 [2021-10-13 22:37:02,331 INFO L226 Difference]: Without dead ends: 4176 [2021-10-13 22:37:02,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 445.3ms TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:37:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-10-13 22:37:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3303. [2021-10-13 22:37:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:37:02,372 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:37:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:02,372 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:37:02,372 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 22:37:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:37:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:02,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:02,375 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 22:37:02,402 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 22:37:02,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:02,575 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash -300172537, now seen corresponding path program 110 times [2021-10-13 22:37:02,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:02,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736663511] [2021-10-13 22:37:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:02,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:02,739 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 22:37:02,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:02,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736663511] [2021-10-13 22:37:02,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736663511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:02,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645048501] [2021-10-13 22:37:02,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:02,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:02,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:02,740 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 22:37:02,741 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 22:37:06,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:06,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:06,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:37:06,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:06,773 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 22:37:06,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645048501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:06,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:06,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:37:06,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447269530] [2021-10-13 22:37:06,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:06,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:06,774 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:07,150 INFO L93 Difference]: Finished difference Result 4396 states and 11597 transitions. [2021-10-13 22:37:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:37:07,150 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 22:37:07,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:07,155 INFO L225 Difference]: With dead ends: 4396 [2021-10-13 22:37:07,155 INFO L226 Difference]: Without dead ends: 4126 [2021-10-13 22:37:07,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 358.7ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:37:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-10-13 22:37:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3303. [2021-10-13 22:37:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:37:07,189 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:37:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:07,189 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:37:07,189 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 22:37:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:37:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:07,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:07,192 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 22:37:07,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-10-13 22:37:07,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:07,392 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:07,392 INFO L82 PathProgramCache]: Analyzing trace with hash 573820919, now seen corresponding path program 111 times [2021-10-13 22:37:07,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:07,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179301699] [2021-10-13 22:37:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:07,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:07,565 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 22:37:07,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:07,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179301699] [2021-10-13 22:37:07,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179301699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:07,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300627226] [2021-10-13 22:37:07,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:07,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:07,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:07,566 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 22:37:07,566 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 22:37:11,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:37:11,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 22:37:11,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:11,626 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 22:37:11,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300627226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:11,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:11,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:37:11,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936863257] [2021-10-13 22:37:11,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:11,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:11,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:11,627 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:12,146 INFO L93 Difference]: Finished difference Result 4346 states and 11497 transitions. [2021-10-13 22:37:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:37:12,146 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 22:37:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:12,151 INFO L225 Difference]: With dead ends: 4346 [2021-10-13 22:37:12,151 INFO L226 Difference]: Without dead ends: 4076 [2021-10-13 22:37:12,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 501.3ms TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:37:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-13 22:37:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-10-13 22:37:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:37:12,188 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:37:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:12,188 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:37:12,188 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 22:37:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:37:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:12,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:12,191 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 22:37:12,220 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 22:37:12,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:12,392 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:12,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1069114629, now seen corresponding path program 112 times [2021-10-13 22:37:12,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:12,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109725044] [2021-10-13 22:37:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:12,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:12,564 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 22:37:12,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:12,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109725044] [2021-10-13 22:37:12,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109725044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:12,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225767601] [2021-10-13 22:37:12,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:12,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:12,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:12,566 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 22:37:12,566 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 22:37:16,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:16,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:16,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:37:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:16,622 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 22:37:16,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225767601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:16,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:16,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:37:16,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161768361] [2021-10-13 22:37:16,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:16,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:16,624 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:17,060 INFO L93 Difference]: Finished difference Result 4296 states and 11397 transitions. [2021-10-13 22:37:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:37:17,060 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 22:37:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:17,066 INFO L225 Difference]: With dead ends: 4296 [2021-10-13 22:37:17,066 INFO L226 Difference]: Without dead ends: 4026 [2021-10-13 22:37:17,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 406.4ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:37:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-10-13 22:37:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3303. [2021-10-13 22:37:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:37:17,184 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:37:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:17,185 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:37:17,185 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 22:37:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:37:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:17,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:17,187 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 22:37:17,215 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 22:37:17,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-13 22:37:17,388 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:17,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1475746315, now seen corresponding path program 113 times [2021-10-13 22:37:17,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:17,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085455123] [2021-10-13 22:37:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:17,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:17,685 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 22:37:17,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:17,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085455123] [2021-10-13 22:37:17,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085455123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:17,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795681152] [2021-10-13 22:37:17,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:17,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:17,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:17,686 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 22:37:17,688 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 22:37:21,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:37:21,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:21,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:37:21,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:21,740 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 22:37:21,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795681152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:21,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:21,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:37:21,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009219692] [2021-10-13 22:37:21,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:21,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:21,741 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:22,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:22,246 INFO L93 Difference]: Finished difference Result 4246 states and 11297 transitions. [2021-10-13 22:37:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:37:22,246 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 22:37:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:22,251 INFO L225 Difference]: With dead ends: 4246 [2021-10-13 22:37:22,251 INFO L226 Difference]: Without dead ends: 3976 [2021-10-13 22:37:22,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 506.6ms TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:37:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-10-13 22:37:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3303. [2021-10-13 22:37:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:37:22,301 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:37:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:22,301 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:37:22,301 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 22:37:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:37:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:22,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:22,304 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 22:37:22,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-10-13 22:37:22,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-13 22:37:22,505 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash -565848957, now seen corresponding path program 114 times [2021-10-13 22:37:22,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:22,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243679212] [2021-10-13 22:37:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:22,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:22,750 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 22:37:22,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:22,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243679212] [2021-10-13 22:37:22,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243679212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:22,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936230526] [2021-10-13 22:37:22,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:22,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:22,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:22,751 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 22:37:22,752 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 22:37:26,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:37:26,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:26,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:37:26,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:26,821 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 22:37:26,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936230526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:26,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:26,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:37:26,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221793827] [2021-10-13 22:37:26,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:26,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:26,822 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:27,258 INFO L93 Difference]: Finished difference Result 4196 states and 11197 transitions. [2021-10-13 22:37:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:37:27,258 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 22:37:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:27,263 INFO L225 Difference]: With dead ends: 4196 [2021-10-13 22:37:27,263 INFO L226 Difference]: Without dead ends: 3926 [2021-10-13 22:37:27,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 400.3ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 22:37:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-10-13 22:37:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3303. [2021-10-13 22:37:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-10-13 22:37:27,300 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-10-13 22:37:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:27,300 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-10-13 22:37:27,300 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 22:37:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-10-13 22:37:27,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:27,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:27,303 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 22:37:27,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:27,503 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,SelfDestructingSolverStorable124 [2021-10-13 22:37:27,503 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:27,504 INFO L82 PathProgramCache]: Analyzing trace with hash -433733261, now seen corresponding path program 115 times [2021-10-13 22:37:27,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:27,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758311474] [2021-10-13 22:37:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:27,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:27,673 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 22:37:27,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:27,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758311474] [2021-10-13 22:37:27,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758311474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:27,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321214167] [2021-10-13 22:37:27,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:27,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:27,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:27,676 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 22:37:27,676 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 22:37:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:31,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 22:37:31,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:31,955 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 22:37:31,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321214167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:31,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:31,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:37:31,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098400701] [2021-10-13 22:37:31,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:31,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:31,956 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 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 22:37:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:32,504 INFO L93 Difference]: Finished difference Result 4206 states and 11247 transitions. [2021-10-13 22:37:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:37:32,505 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 22:37:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:32,509 INFO L225 Difference]: With dead ends: 4206 [2021-10-13 22:37:32,509 INFO L226 Difference]: Without dead ends: 3936 [2021-10-13 22:37:32,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 511.6ms TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:37:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-10-13 22:37:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3303. [2021-10-13 22:37:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.812840702604482) internal successors, (9288), 3302 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9288 transitions. [2021-10-13 22:37:32,542 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9288 transitions. Word has length 105 [2021-10-13 22:37:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:32,542 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9288 transitions. [2021-10-13 22:37:32,542 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 22:37:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9288 transitions. [2021-10-13 22:37:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:32,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:32,545 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 22:37:32,572 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 22:37:32,745 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,SelfDestructingSolverStorable125 [2021-10-13 22:37:32,745 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash -890115711, now seen corresponding path program 116 times [2021-10-13 22:37:32,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:32,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076525990] [2021-10-13 22:37:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:32,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:32,900 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 22:37:32,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:32,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076525990] [2021-10-13 22:37:32,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076525990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:32,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736903356] [2021-10-13 22:37:32,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:32,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:32,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:32,901 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 22:37:32,902 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 22:37:36,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:36,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:36,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:36,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:37,080 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 22:37:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736903356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:37,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:37,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 22:37:37,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686719169] [2021-10-13 22:37:37,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:37:37,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:37:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:37:37,081 INFO L87 Difference]: Start difference. First operand 3303 states and 9288 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 22:37:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:37,540 INFO L93 Difference]: Finished difference Result 4948 states and 13371 transitions. [2021-10-13 22:37:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:37:37,540 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 22:37:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:37,546 INFO L225 Difference]: With dead ends: 4948 [2021-10-13 22:37:37,546 INFO L226 Difference]: Without dead ends: 4678 [2021-10-13 22:37:37,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 422.5ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 22:37:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2021-10-13 22:37:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 3483. [2021-10-13 22:37:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 3482 states have (on average 2.827972429638139) internal successors, (9847), 3482 states have internal predecessors, (9847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 9847 transitions. [2021-10-13 22:37:37,589 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 9847 transitions. Word has length 105 [2021-10-13 22:37:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:37,589 INFO L470 AbstractCegarLoop]: Abstraction has 3483 states and 9847 transitions. [2021-10-13 22:37:37,589 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 22:37:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 9847 transitions. [2021-10-13 22:37:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 22:37:37,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:37,592 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 22:37:37,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-13 22:37:37,792 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,SelfDestructingSolverStorable126 [2021-10-13 22:37:37,793 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash -824873421, now seen corresponding path program 117 times [2021-10-13 22:37:37,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:37,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044372445] [2021-10-13 22:37:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:37,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:37,948 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 22:37:37,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:37,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044372445] [2021-10-13 22:37:37,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044372445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:37,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108820277] [2021-10-13 22:37:37,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:37,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:37,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:37,950 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 22:37:37,951 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 22:37:41,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:37:41,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:41,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:41,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:42,096 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 22:37:42,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108820277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:42,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:42,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-10-13 22:37:42,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589896527] [2021-10-13 22:37:42,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:42,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:42,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:42,098 INFO L87 Difference]: Start difference. First operand 3483 states and 9847 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 22:37:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:42,843 INFO L93 Difference]: Finished difference Result 4816 states and 13036 transitions. [2021-10-13 22:37:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:37:42,843 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 22:37:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:42,849 INFO L225 Difference]: With dead ends: 4816 [2021-10-13 22:37:42,849 INFO L226 Difference]: Without dead ends: 4241 [2021-10-13 22:37:42,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 622.3ms TimeCoverageRelationStatistics Valid=830, Invalid=2592, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:37:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-10-13 22:37:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2324. [2021-10-13 22:37:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.7361170899698664) internal successors, (6356), 2323 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6356 transitions. [2021-10-13 22:37:42,882 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6356 transitions. Word has length 105 [2021-10-13 22:37:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:42,882 INFO L470 AbstractCegarLoop]: Abstraction has 2324 states and 6356 transitions. [2021-10-13 22:37:42,882 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 22:37:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6356 transitions. [2021-10-13 22:37:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:42,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:42,885 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 22:37:42,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-13 22:37:43,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:43,086 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash -817343005, now seen corresponding path program 118 times [2021-10-13 22:37:43,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:43,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091120919] [2021-10-13 22:37:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:43,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:43,420 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 22:37:43,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:43,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091120919] [2021-10-13 22:37:43,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091120919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:43,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927127538] [2021-10-13 22:37:43,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:43,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:43,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:43,421 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 22:37:43,422 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 22:37:47,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:47,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:47,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:37:47,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:47,839 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 22:37:47,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927127538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:47,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:47,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-10-13 22:37:47,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729478481] [2021-10-13 22:37:47,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:37:47,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:37:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:37:47,841 INFO L87 Difference]: Start difference. First operand 2324 states and 6356 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 22:37:48,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:48,180 INFO L93 Difference]: Finished difference Result 3364 states and 8756 transitions. [2021-10-13 22:37:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:37:48,180 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 22:37:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:48,184 INFO L225 Difference]: With dead ends: 3364 [2021-10-13 22:37:48,184 INFO L226 Difference]: Without dead ends: 3030 [2021-10-13 22:37:48,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 407.5ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:37:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-13 22:37:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2409. [2021-10-13 22:37:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 2.7101328903654487) internal successors, (6526), 2408 states have internal predecessors, (6526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6526 transitions. [2021-10-13 22:37:48,208 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6526 transitions. Word has length 110 [2021-10-13 22:37:48,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:48,208 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 6526 transitions. [2021-10-13 22:37:48,208 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 22:37:48,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6526 transitions. [2021-10-13 22:37:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:48,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:48,210 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 22:37:48,238 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 22:37:48,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:48,411 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:48,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1287059495, now seen corresponding path program 119 times [2021-10-13 22:37:48,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:48,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329961941] [2021-10-13 22:37:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:48,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:48,720 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 22:37:48,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:48,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329961941] [2021-10-13 22:37:48,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329961941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:48,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445736310] [2021-10-13 22:37:48,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:48,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:48,721 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 22:37:48,721 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 22:37:52,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:37:52,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:52,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:52,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:53,133 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 22:37:53,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445736310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:53,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:53,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:37:53,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370546715] [2021-10-13 22:37:53,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:37:53,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:37:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:37:53,134 INFO L87 Difference]: Start difference. First operand 2409 states and 6526 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 22:37:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:53,410 INFO L93 Difference]: Finished difference Result 4086 states and 10137 transitions. [2021-10-13 22:37:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:37:53,411 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 22:37:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:53,415 INFO L225 Difference]: With dead ends: 4086 [2021-10-13 22:37:53,416 INFO L226 Difference]: Without dead ends: 3816 [2021-10-13 22:37:53,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 318.7ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:37:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2021-10-13 22:37:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 2553. [2021-10-13 22:37:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 2.720611285266458) internal successors, (6943), 2552 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 6943 transitions. [2021-10-13 22:37:53,444 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 6943 transitions. Word has length 110 [2021-10-13 22:37:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:53,445 INFO L470 AbstractCegarLoop]: Abstraction has 2553 states and 6943 transitions. [2021-10-13 22:37:53,445 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 22:37:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 6943 transitions. [2021-10-13 22:37:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:53,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:53,448 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 22:37:53,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2021-10-13 22:37:53,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-13 22:37:53,649 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:53,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:53,649 INFO L82 PathProgramCache]: Analyzing trace with hash -497853161, now seen corresponding path program 120 times [2021-10-13 22:37:53,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:53,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368936607] [2021-10-13 22:37:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:53,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:53,872 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 22:37:53,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:53,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368936607] [2021-10-13 22:37:53,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368936607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:53,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133999057] [2021-10-13 22:37:53,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:53,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:53,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:53,874 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 22:37:53,875 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 22:37:58,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:37:58,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:58,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:37:58,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:58,566 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 22:37:58,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133999057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:58,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:58,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:37:58,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672724459] [2021-10-13 22:37:58,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:58,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:58,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:58,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:58,567 INFO L87 Difference]: Start difference. First operand 2553 states and 6943 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 22:37:58,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:58,965 INFO L93 Difference]: Finished difference Result 4046 states and 10132 transitions. [2021-10-13 22:37:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:37:58,966 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 22:37:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:58,970 INFO L225 Difference]: With dead ends: 4046 [2021-10-13 22:37:58,970 INFO L226 Difference]: Without dead ends: 3776 [2021-10-13 22:37:58,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 429.0ms TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:37:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-10-13 22:37:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 2628. [2021-10-13 22:37:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2628 states, 2627 states have (on average 2.7285877426722496) internal successors, (7168), 2627 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 7168 transitions. [2021-10-13 22:37:58,998 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 7168 transitions. Word has length 110 [2021-10-13 22:37:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:58,998 INFO L470 AbstractCegarLoop]: Abstraction has 2628 states and 7168 transitions. [2021-10-13 22:37:58,998 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 22:37:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 7168 transitions. [2021-10-13 22:37:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:37:59,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:59,000 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 22:37:59,030 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 22:37:59,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:59,201 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:59,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1084378149, now seen corresponding path program 121 times [2021-10-13 22:37:59,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:59,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617119401] [2021-10-13 22:37:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:59,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:59,402 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 22:37:59,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:59,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617119401] [2021-10-13 22:37:59,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617119401] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:59,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011419955] [2021-10-13 22:37:59,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:59,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:59,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:59,407 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 22:37:59,408 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 22:38:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:03,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:03,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:03,991 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 22:38:03,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011419955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:03,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:03,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:03,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915871902] [2021-10-13 22:38:03,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:03,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:03,993 INFO L87 Difference]: Start difference. First operand 2628 states and 7168 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 22:38:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:04,295 INFO L93 Difference]: Finished difference Result 4096 states and 10307 transitions. [2021-10-13 22:38:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:38:04,296 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 22:38:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:04,300 INFO L225 Difference]: With dead ends: 4096 [2021-10-13 22:38:04,300 INFO L226 Difference]: Without dead ends: 3826 [2021-10-13 22:38:04,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 333.7ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:38:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-10-13 22:38:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 2703. [2021-10-13 22:38:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 2702 states have (on average 2.736121391561806) internal successors, (7393), 2702 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 7393 transitions. [2021-10-13 22:38:04,328 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 7393 transitions. Word has length 110 [2021-10-13 22:38:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:04,329 INFO L470 AbstractCegarLoop]: Abstraction has 2703 states and 7393 transitions. [2021-10-13 22:38:04,329 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 22:38:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 7393 transitions. [2021-10-13 22:38:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:04,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:04,331 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 22:38:04,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2021-10-13 22:38:04,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:04,532 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:04,532 INFO L82 PathProgramCache]: Analyzing trace with hash 77274389, now seen corresponding path program 122 times [2021-10-13 22:38:04,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:04,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001356327] [2021-10-13 22:38:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:04,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:04,749 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 22:38:04,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:04,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001356327] [2021-10-13 22:38:04,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001356327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:04,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558195648] [2021-10-13 22:38:04,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:04,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:04,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:04,751 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 22:38:04,752 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 22:38:08,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:08,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:08,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:08,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:09,374 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 22:38:09,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558195648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:09,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:09,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:09,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143789692] [2021-10-13 22:38:09,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:09,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:09,375 INFO L87 Difference]: Start difference. First operand 2703 states and 7393 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 22:38:09,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:09,765 INFO L93 Difference]: Finished difference Result 4121 states and 10432 transitions. [2021-10-13 22:38:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:38:09,766 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 22:38:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:09,770 INFO L225 Difference]: With dead ends: 4121 [2021-10-13 22:38:09,770 INFO L226 Difference]: Without dead ends: 3851 [2021-10-13 22:38:09,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 418.5ms TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:38:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2021-10-13 22:38:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 2778. [2021-10-13 22:38:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2777 states have (on average 2.7432481094706516) internal successors, (7618), 2777 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 7618 transitions. [2021-10-13 22:38:09,801 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 7618 transitions. Word has length 110 [2021-10-13 22:38:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:09,801 INFO L470 AbstractCegarLoop]: Abstraction has 2778 states and 7618 transitions. [2021-10-13 22:38:09,801 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 22:38:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 7618 transitions. [2021-10-13 22:38:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:09,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:09,803 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 22:38:09,834 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 22:38:10,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:10,004 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:10,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:10,004 INFO L82 PathProgramCache]: Analyzing trace with hash 212395427, now seen corresponding path program 123 times [2021-10-13 22:38:10,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:10,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082406267] [2021-10-13 22:38:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:10,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:10,324 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 22:38:10,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:10,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082406267] [2021-10-13 22:38:10,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082406267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:10,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361668177] [2021-10-13 22:38:10,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:10,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:10,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:10,326 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 22:38:10,329 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 22:38:14,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:38:14,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:14,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 22:38:14,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:14,888 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 22:38:14,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361668177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:14,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:14,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:14,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777795716] [2021-10-13 22:38:14,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:14,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:14,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:14,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:14,889 INFO L87 Difference]: Start difference. First operand 2778 states and 7618 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 22:38:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:15,227 INFO L93 Difference]: Finished difference Result 4146 states and 10557 transitions. [2021-10-13 22:38:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:38:15,228 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 22:38:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:15,232 INFO L225 Difference]: With dead ends: 4146 [2021-10-13 22:38:15,232 INFO L226 Difference]: Without dead ends: 3876 [2021-10-13 22:38:15,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 377.4ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:38:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2021-10-13 22:38:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 2853. [2021-10-13 22:38:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 2.75) internal successors, (7843), 2852 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 7843 transitions. [2021-10-13 22:38:15,263 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 7843 transitions. Word has length 110 [2021-10-13 22:38:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:15,263 INFO L470 AbstractCegarLoop]: Abstraction has 2853 states and 7843 transitions. [2021-10-13 22:38:15,263 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 22:38:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 7843 transitions. [2021-10-13 22:38:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:15,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:15,265 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 22:38:15,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-13 22:38:15,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:15,466 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash 123019923, now seen corresponding path program 124 times [2021-10-13 22:38:15,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:15,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273056776] [2021-10-13 22:38:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:15,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:15,767 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 22:38:15,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:15,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273056776] [2021-10-13 22:38:15,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273056776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:15,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86831210] [2021-10-13 22:38:15,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:15,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:15,769 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 22:38:15,770 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 22:38:20,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:20,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:20,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:20,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:20,388 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 22:38:20,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86831210] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:20,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:20,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:20,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926119523] [2021-10-13 22:38:20,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:20,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:20,390 INFO L87 Difference]: Start difference. First operand 2853 states and 7843 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 22:38:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:20,817 INFO L93 Difference]: Finished difference Result 4171 states and 10682 transitions. [2021-10-13 22:38:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:38:20,818 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 22:38:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:20,823 INFO L225 Difference]: With dead ends: 4171 [2021-10-13 22:38:20,823 INFO L226 Difference]: Without dead ends: 3901 [2021-10-13 22:38:20,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 444.8ms TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:38:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-10-13 22:38:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 2928. [2021-10-13 22:38:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 2.756405876323881) internal successors, (8068), 2927 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 8068 transitions. [2021-10-13 22:38:20,858 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 8068 transitions. Word has length 110 [2021-10-13 22:38:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:20,858 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 8068 transitions. [2021-10-13 22:38:20,858 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 22:38:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 8068 transitions. [2021-10-13 22:38:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:20,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:20,860 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 22:38:20,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2021-10-13 22:38:21,060 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,SelfDestructingSolverStorable134 [2021-10-13 22:38:21,061 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:21,061 INFO L82 PathProgramCache]: Analyzing trace with hash -409230175, now seen corresponding path program 125 times [2021-10-13 22:38:21,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:21,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137998096] [2021-10-13 22:38:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:21,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:21,246 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 22:38:21,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:21,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137998096] [2021-10-13 22:38:21,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137998096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:21,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156588987] [2021-10-13 22:38:21,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:21,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:21,326 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 22:38:21,326 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 22:38:25,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:38:25,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:25,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:25,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:26,132 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 22:38:26,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156588987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:26,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:26,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:26,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659175322] [2021-10-13 22:38:26,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:26,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:26,133 INFO L87 Difference]: Start difference. First operand 2928 states and 8068 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 22:38:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:26,513 INFO L93 Difference]: Finished difference Result 4196 states and 10807 transitions. [2021-10-13 22:38:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:38:26,513 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 22:38:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:26,518 INFO L225 Difference]: With dead ends: 4196 [2021-10-13 22:38:26,518 INFO L226 Difference]: Without dead ends: 3926 [2021-10-13 22:38:26,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 374.4ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:38:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-10-13 22:38:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3003. [2021-10-13 22:38:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 2.762491672218521) internal successors, (8293), 3002 states have internal predecessors, (8293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 8293 transitions. [2021-10-13 22:38:26,553 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 8293 transitions. Word has length 110 [2021-10-13 22:38:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:26,553 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 8293 transitions. [2021-10-13 22:38:26,553 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 22:38:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 8293 transitions. [2021-10-13 22:38:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:26,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:26,556 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 22:38:26,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:26,756 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,SelfDestructingSolverStorable135 [2021-10-13 22:38:26,757 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:26,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:26,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1376931217, now seen corresponding path program 126 times [2021-10-13 22:38:26,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:26,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228421705] [2021-10-13 22:38:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:26,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:26,972 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 22:38:26,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:26,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228421705] [2021-10-13 22:38:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228421705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:26,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272146446] [2021-10-13 22:38:26,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:26,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:26,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:26,974 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 22:38:26,974 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 22:38:31,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:38:31,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:31,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:31,773 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 22:38:31,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272146446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:31,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:31,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:31,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023097966] [2021-10-13 22:38:31,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:31,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:31,774 INFO L87 Difference]: Start difference. First operand 3003 states and 8293 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 22:38:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:32,275 INFO L93 Difference]: Finished difference Result 4221 states and 10932 transitions. [2021-10-13 22:38:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:38:32,275 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 22:38:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:32,280 INFO L225 Difference]: With dead ends: 4221 [2021-10-13 22:38:32,280 INFO L226 Difference]: Without dead ends: 3951 [2021-10-13 22:38:32,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 494.4ms TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:38:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2021-10-13 22:38:32,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3078. [2021-10-13 22:38:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 2.7682807929801756) internal successors, (8518), 3077 states have internal predecessors, (8518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 8518 transitions. [2021-10-13 22:38:32,314 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 8518 transitions. Word has length 110 [2021-10-13 22:38:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:32,314 INFO L470 AbstractCegarLoop]: Abstraction has 3078 states and 8518 transitions. [2021-10-13 22:38:32,314 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 22:38:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 8518 transitions. [2021-10-13 22:38:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:32,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:32,317 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 22:38:32,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2021-10-13 22:38:32,517 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,SelfDestructingSolverStorable136 [2021-10-13 22:38:32,517 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1306749215, now seen corresponding path program 127 times [2021-10-13 22:38:32,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:32,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232614381] [2021-10-13 22:38:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:32,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:32,692 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 22:38:32,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:32,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232614381] [2021-10-13 22:38:32,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232614381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:32,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771069773] [2021-10-13 22:38:32,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:32,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:32,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:32,699 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 22:38:32,727 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 22:38:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:37,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:37,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:37,619 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 22:38:37,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771069773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:37,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:37,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:37,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949324301] [2021-10-13 22:38:37,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:37,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:37,621 INFO L87 Difference]: Start difference. First operand 3078 states and 8518 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 22:38:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:38,041 INFO L93 Difference]: Finished difference Result 4246 states and 11057 transitions. [2021-10-13 22:38:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:38:38,041 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 22:38:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:38,046 INFO L225 Difference]: With dead ends: 4246 [2021-10-13 22:38:38,046 INFO L226 Difference]: Without dead ends: 3976 [2021-10-13 22:38:38,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 393.2ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:38:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-10-13 22:38:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3153. [2021-10-13 22:38:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3152 states have (on average 2.7737944162436547) internal successors, (8743), 3152 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 8743 transitions. [2021-10-13 22:38:38,081 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 8743 transitions. Word has length 110 [2021-10-13 22:38:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:38,081 INFO L470 AbstractCegarLoop]: Abstraction has 3153 states and 8743 transitions. [2021-10-13 22:38:38,081 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 22:38:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 8743 transitions. [2021-10-13 22:38:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:38,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:38,084 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 22:38:38,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2021-10-13 22:38:38,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:38,284 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:38,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2114224625, now seen corresponding path program 128 times [2021-10-13 22:38:38,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:38,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569024059] [2021-10-13 22:38:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:38,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:38,493 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 22:38:38,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:38,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569024059] [2021-10-13 22:38:38,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569024059] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:38,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925305354] [2021-10-13 22:38:38,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:38,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:38,495 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 22:38:38,495 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 22:38:42,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:42,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:43,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:43,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:43,328 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 22:38:43,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925305354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:43,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:43,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:43,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592647709] [2021-10-13 22:38:43,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:43,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:43,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:43,329 INFO L87 Difference]: Start difference. First operand 3153 states and 8743 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 22:38:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:43,866 INFO L93 Difference]: Finished difference Result 4271 states and 11182 transitions. [2021-10-13 22:38:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:38:43,867 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 22:38:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:43,873 INFO L225 Difference]: With dead ends: 4271 [2021-10-13 22:38:43,873 INFO L226 Difference]: Without dead ends: 4001 [2021-10-13 22:38:43,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 531.1ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:38:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-10-13 22:38:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3228. [2021-10-13 22:38:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3228 states, 3227 states have (on average 2.779051750852185) internal successors, (8968), 3227 states have internal predecessors, (8968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 8968 transitions. [2021-10-13 22:38:43,917 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 8968 transitions. Word has length 110 [2021-10-13 22:38:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:43,917 INFO L470 AbstractCegarLoop]: Abstraction has 3228 states and 8968 transitions. [2021-10-13 22:38:43,917 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 22:38:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 8968 transitions. [2021-10-13 22:38:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:43,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:43,920 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 22:38:43,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:44,120 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,SelfDestructingSolverStorable138 [2021-10-13 22:38:44,120 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:44,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:44,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1618930915, now seen corresponding path program 129 times [2021-10-13 22:38:44,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:44,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389805564] [2021-10-13 22:38:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:44,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:44,323 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 22:38:44,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:44,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389805564] [2021-10-13 22:38:44,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389805564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:44,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197593522] [2021-10-13 22:38:44,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:44,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:44,327 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 22:38:44,328 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 22:38:49,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 22:38:49,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:49,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 22:38:49,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:49,410 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 22:38:49,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197593522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:49,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:49,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:38:49,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868346507] [2021-10-13 22:38:49,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:38:49,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:38:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:38:49,411 INFO L87 Difference]: Start difference. First operand 3228 states and 8968 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 22:38:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:49,856 INFO L93 Difference]: Finished difference Result 4296 states and 11307 transitions. [2021-10-13 22:38:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:38:49,856 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 22:38:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:49,862 INFO L225 Difference]: With dead ends: 4296 [2021-10-13 22:38:49,863 INFO L226 Difference]: Without dead ends: 4026 [2021-10-13 22:38:49,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 437.4ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:38:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-10-13 22:38:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3303. [2021-10-13 22:38:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.784070260448213) internal successors, (9193), 3302 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9193 transitions. [2021-10-13 22:38:49,905 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9193 transitions. Word has length 110 [2021-10-13 22:38:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:49,905 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 9193 transitions. [2021-10-13 22:38:49,905 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 22:38:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9193 transitions. [2021-10-13 22:38:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:49,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:49,908 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 22:38:49,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:50,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-10-13 22:38:50,108 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash 131175437, now seen corresponding path program 130 times [2021-10-13 22:38:50,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:50,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447941949] [2021-10-13 22:38:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:50,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:50,283 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 22:38:50,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:50,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447941949] [2021-10-13 22:38:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447941949] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:50,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359128100] [2021-10-13 22:38:50,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:50,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:50,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:50,284 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 22:38:50,284 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 22:38:54,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:54,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:54,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:38:54,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:55,209 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 22:38:55,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359128100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:55,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:55,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:38:55,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499290455] [2021-10-13 22:38:55,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:55,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:55,210 INFO L87 Difference]: Start difference. First operand 3303 states and 9193 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 22:38:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:55,782 INFO L93 Difference]: Finished difference Result 4321 states and 11432 transitions. [2021-10-13 22:38:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:38:55,783 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 22:38:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:55,788 INFO L225 Difference]: With dead ends: 4321 [2021-10-13 22:38:55,788 INFO L226 Difference]: Without dead ends: 4051 [2021-10-13 22:38:55,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 542.3ms TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:38:55,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-10-13 22:38:55,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3378. [2021-10-13 22:38:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 2.788865857269766) internal successors, (9418), 3377 states have internal predecessors, (9418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 9418 transitions. [2021-10-13 22:38:55,827 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 9418 transitions. Word has length 110 [2021-10-13 22:38:55,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:55,827 INFO L470 AbstractCegarLoop]: Abstraction has 3378 states and 9418 transitions. [2021-10-13 22:38:55,827 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 22:38:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 9418 transitions. [2021-10-13 22:38:55,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:38:55,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:55,830 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 22:38:55,862 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 22:38:56,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:56,031 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:56,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:56,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1041072795, now seen corresponding path program 131 times [2021-10-13 22:38:56,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:56,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018727672] [2021-10-13 22:38:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:56,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:56,200 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 22:38:56,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:56,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018727672] [2021-10-13 22:38:56,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018727672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:56,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445894445] [2021-10-13 22:38:56,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:56,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:56,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:56,201 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 22:38:56,204 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 22:39:00,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-13 22:39:00,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:00,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:39:00,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:01,211 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 22:39:01,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445894445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:01,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:01,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:39:01,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802602761] [2021-10-13 22:39:01,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:01,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:01,212 INFO L87 Difference]: Start difference. First operand 3378 states and 9418 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 22:39:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:01,688 INFO L93 Difference]: Finished difference Result 4391 states and 11677 transitions. [2021-10-13 22:39:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:39:01,688 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 22:39:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:01,694 INFO L225 Difference]: With dead ends: 4391 [2021-10-13 22:39:01,694 INFO L226 Difference]: Without dead ends: 4121 [2021-10-13 22:39:01,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 441.7ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:39:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-10-13 22:39:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3453. [2021-10-13 22:39:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 2.7977983777520277) internal successors, (9658), 3452 states have internal predecessors, (9658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 9658 transitions. [2021-10-13 22:39:01,737 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 9658 transitions. Word has length 110 [2021-10-13 22:39:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:01,737 INFO L470 AbstractCegarLoop]: Abstraction has 3453 states and 9658 transitions. [2021-10-13 22:39:01,737 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 22:39:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 9658 transitions. [2021-10-13 22:39:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:39:01,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:01,741 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 22:39:01,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:01,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:01,941 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:01,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1173188491, now seen corresponding path program 132 times [2021-10-13 22:39:01,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:01,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711078328] [2021-10-13 22:39:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:01,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:02,136 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 22:39:02,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:02,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711078328] [2021-10-13 22:39:02,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711078328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:02,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706615591] [2021-10-13 22:39:02,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:02,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:02,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:02,138 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 22:39:02,138 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 22:39:06,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 22:39:06,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:06,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:39:06,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:07,113 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 22:39:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706615591] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:07,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:39:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209555281] [2021-10-13 22:39:07,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:07,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:07,114 INFO L87 Difference]: Start difference. First operand 3453 states and 9658 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 22:39:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:07,734 INFO L93 Difference]: Finished difference Result 4969 states and 13303 transitions. [2021-10-13 22:39:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:39:07,734 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 22:39:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:07,740 INFO L225 Difference]: With dead ends: 4969 [2021-10-13 22:39:07,740 INFO L226 Difference]: Without dead ends: 4346 [2021-10-13 22:39:07,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 556.7ms TimeCoverageRelationStatistics Valid=737, Invalid=2455, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:39:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2021-10-13 22:39:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 3528. [2021-10-13 22:39:07,772 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 22:39:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9888 transitions. [2021-10-13 22:39:07,776 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9888 transitions. Word has length 110 [2021-10-13 22:39:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:07,776 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 9888 transitions. [2021-10-13 22:39:07,777 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 22:39:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9888 transitions. [2021-10-13 22:39:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:39:07,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:07,780 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 22:39:07,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2021-10-13 22:39:07,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:07,980 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:07,980 INFO L82 PathProgramCache]: Analyzing trace with hash 716806041, now seen corresponding path program 133 times [2021-10-13 22:39:07,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:07,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803918007] [2021-10-13 22:39:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:07,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:08,144 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 22:39:08,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:08,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803918007] [2021-10-13 22:39:08,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803918007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:08,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495638119] [2021-10-13 22:39:08,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:08,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:08,145 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 22:39:08,146 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 22:39:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:12,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 22:39:12,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:13,209 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 22:39:13,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495638119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:13,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:13,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 22:39:13,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384670831] [2021-10-13 22:39:13,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:13,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:13,211 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 22:39:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:13,718 INFO L93 Difference]: Finished difference Result 5198 states and 14021 transitions. [2021-10-13 22:39:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:39:13,718 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 22:39:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:13,725 INFO L225 Difference]: With dead ends: 5198 [2021-10-13 22:39:13,725 INFO L226 Difference]: Without dead ends: 4928 [2021-10-13 22:39:13,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 462.1ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:39:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-10-13 22:39:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 3708. [2021-10-13 22:39:13,763 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 22:39:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 10447 transitions. [2021-10-13 22:39:13,768 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 10447 transitions. Word has length 110 [2021-10-13 22:39:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:13,768 INFO L470 AbstractCegarLoop]: Abstraction has 3708 states and 10447 transitions. [2021-10-13 22:39:13,768 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 22:39:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 10447 transitions. [2021-10-13 22:39:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 22:39:13,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:13,771 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 22:39:13,802 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 22:39:13,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2021-10-13 22:39:13,972 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:13,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:13,972 INFO L82 PathProgramCache]: Analyzing trace with hash 782048331, now seen corresponding path program 134 times [2021-10-13 22:39:13,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:13,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075855969] [2021-10-13 22:39:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:13,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:14,135 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 22:39:14,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:14,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075855969] [2021-10-13 22:39:14,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075855969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:14,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283103942] [2021-10-13 22:39:14,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:14,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:14,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:14,136 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 22:39:14,137 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 22:39:18,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:18,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:18,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:18,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:19,143 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 22:39:19,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283103942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:19,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:19,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-13 22:39:19,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035509285] [2021-10-13 22:39:19,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:19,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:19,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:19,144 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 22:39:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:19,787 INFO L93 Difference]: Finished difference Result 5021 states and 13521 transitions. [2021-10-13 22:39:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:39:19,788 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 22:39:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:19,794 INFO L225 Difference]: With dead ends: 5021 [2021-10-13 22:39:19,794 INFO L226 Difference]: Without dead ends: 4446 [2021-10-13 22:39:19,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 598.0ms TimeCoverageRelationStatistics Valid=843, Invalid=2697, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:39:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-10-13 22:39:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2603. [2021-10-13 22:39:19,827 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 22:39:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7118 transitions. [2021-10-13 22:39:19,830 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7118 transitions. Word has length 110 [2021-10-13 22:39:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:19,830 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 7118 transitions. [2021-10-13 22:39:19,831 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 22:39:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7118 transitions. [2021-10-13 22:39:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:19,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:19,833 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 22:39:19,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2021-10-13 22:39:20,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-10-13 22:39:20,033 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:20,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:20,033 INFO L82 PathProgramCache]: Analyzing trace with hash -172218370, now seen corresponding path program 135 times [2021-10-13 22:39:20,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:20,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661414538] [2021-10-13 22:39:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:20,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:20,261 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 22:39:20,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:20,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661414538] [2021-10-13 22:39:20,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661414538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:20,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564302223] [2021-10-13 22:39:20,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:20,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:20,262 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 22:39:20,263 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 22:39:25,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:39:25,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:25,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:25,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:25,481 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 22:39:25,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564302223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:25,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:25,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:39:25,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584739060] [2021-10-13 22:39:25,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:25,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:25,482 INFO L87 Difference]: Start difference. First operand 2603 states and 7118 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:25,805 INFO L93 Difference]: Finished difference Result 3821 states and 9757 transitions. [2021-10-13 22:39:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:39:25,806 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:39:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:25,810 INFO L225 Difference]: With dead ends: 3821 [2021-10-13 22:39:25,810 INFO L226 Difference]: Without dead ends: 3551 [2021-10-13 22:39:25,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 354.1ms TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:39:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-10-13 22:39:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 2678. [2021-10-13 22:39:25,834 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 22:39:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7343 transitions. [2021-10-13 22:39:25,838 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7343 transitions. Word has length 115 [2021-10-13 22:39:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:25,838 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7343 transitions. [2021-10-13 22:39:25,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7343 transitions. [2021-10-13 22:39:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:25,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:25,840 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 22:39:25,873 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 22:39:26,041 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,SelfDestructingSolverStorable145 [2021-10-13 22:39:26,041 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1957131026, now seen corresponding path program 136 times [2021-10-13 22:39:26,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:26,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759712959] [2021-10-13 22:39:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:26,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:26,276 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 22:39:26,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:26,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759712959] [2021-10-13 22:39:26,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759712959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:26,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461953074] [2021-10-13 22:39:26,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:26,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:26,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:26,277 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 22:39:26,278 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 22:39:31,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:31,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:31,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:31,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:31,685 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 22:39:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461953074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:31,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:31,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:31,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38981867] [2021-10-13 22:39:31,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:31,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:31,686 INFO L87 Difference]: Start difference. First operand 2678 states and 7343 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 22:39:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:32,060 INFO L93 Difference]: Finished difference Result 4241 states and 10672 transitions. [2021-10-13 22:39:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:39:32,060 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 22:39:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:32,065 INFO L225 Difference]: With dead ends: 4241 [2021-10-13 22:39:32,065 INFO L226 Difference]: Without dead ends: 3971 [2021-10-13 22:39:32,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 404.5ms TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:39:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2021-10-13 22:39:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2753. [2021-10-13 22:39:32,091 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 22:39:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7568 transitions. [2021-10-13 22:39:32,094 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7568 transitions. Word has length 115 [2021-10-13 22:39:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:32,095 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 7568 transitions. [2021-10-13 22:39:32,095 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 22:39:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7568 transitions. [2021-10-13 22:39:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:32,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:32,097 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 22:39:32,130 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 22:39:32,298 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,SelfDestructingSolverStorable146 [2021-10-13 22:39:32,298 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:32,298 INFO L82 PathProgramCache]: Analyzing trace with hash -374899716, now seen corresponding path program 137 times [2021-10-13 22:39:32,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:32,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825281699] [2021-10-13 22:39:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:32,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:32,572 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 22:39:32,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825281699] [2021-10-13 22:39:32,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825281699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938433798] [2021-10-13 22:39:32,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:39:32,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:32,574 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 22:39:32,574 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 22:39:37,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:39:37,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:37,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:37,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:37,804 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 22:39:37,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938433798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:37,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:37,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:39:37,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309949872] [2021-10-13 22:39:37,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:37,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:37,805 INFO L87 Difference]: Start difference. First operand 2753 states and 7568 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:38,149 INFO L93 Difference]: Finished difference Result 4271 states and 10807 transitions. [2021-10-13 22:39:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:39:38,150 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:39:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:38,154 INFO L225 Difference]: With dead ends: 4271 [2021-10-13 22:39:38,155 INFO L226 Difference]: Without dead ends: 4001 [2021-10-13 22:39:38,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 369.1ms TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:39:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-10-13 22:39:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2828. [2021-10-13 22:39:38,184 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 22:39:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7793 transitions. [2021-10-13 22:39:38,187 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7793 transitions. Word has length 115 [2021-10-13 22:39:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:38,187 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 7793 transitions. [2021-10-13 22:39:38,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7793 transitions. [2021-10-13 22:39:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:38,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:38,190 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 22:39:38,223 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 22:39:38,390 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,SelfDestructingSolverStorable147 [2021-10-13 22:39:38,390 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1382003476, now seen corresponding path program 138 times [2021-10-13 22:39:38,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:38,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921696112] [2021-10-13 22:39:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:38,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:38,612 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 22:39:38,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:38,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921696112] [2021-10-13 22:39:38,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921696112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:38,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280215182] [2021-10-13 22:39:38,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:38,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:38,613 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 22:39:38,613 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 22:39:43,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:39:43,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:43,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:43,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:43,962 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 22:39:43,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280215182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:43,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:43,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:43,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204970323] [2021-10-13 22:39:43,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:43,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:43,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:43,963 INFO L87 Difference]: Start difference. First operand 2828 states and 7793 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 22:39:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:44,401 INFO L93 Difference]: Finished difference Result 4296 states and 10932 transitions. [2021-10-13 22:39:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:39:44,402 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 22:39:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:44,407 INFO L225 Difference]: With dead ends: 4296 [2021-10-13 22:39:44,408 INFO L226 Difference]: Without dead ends: 4026 [2021-10-13 22:39:44,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 447.2ms TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:39:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-10-13 22:39:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2903. [2021-10-13 22:39:44,437 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 22:39:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 8018 transitions. [2021-10-13 22:39:44,440 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 8018 transitions. Word has length 115 [2021-10-13 22:39:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:44,441 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 8018 transitions. [2021-10-13 22:39:44,441 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 22:39:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 8018 transitions. [2021-10-13 22:39:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:44,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:44,443 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 22:39:44,477 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 22:39:44,643 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,SelfDestructingSolverStorable148 [2021-10-13 22:39:44,644 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1246882438, now seen corresponding path program 139 times [2021-10-13 22:39:44,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:44,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67274364] [2021-10-13 22:39:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:44,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:44,940 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 22:39:44,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:44,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67274364] [2021-10-13 22:39:44,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67274364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:44,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570748945] [2021-10-13 22:39:44,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:44,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:44,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:44,941 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 22:39:44,942 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 22:39:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:49,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:49,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:50,368 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 22:39:50,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570748945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:50,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:50,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:39:50,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301294639] [2021-10-13 22:39:50,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:39:50,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:50,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:39:50,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:39:50,371 INFO L87 Difference]: Start difference. First operand 2903 states and 8018 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:50,757 INFO L93 Difference]: Finished difference Result 4321 states and 11057 transitions. [2021-10-13 22:39:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:39:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:39:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:50,762 INFO L225 Difference]: With dead ends: 4321 [2021-10-13 22:39:50,762 INFO L226 Difference]: Without dead ends: 4051 [2021-10-13 22:39:50,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 478.6ms TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:39:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-10-13 22:39:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2978. [2021-10-13 22:39:50,791 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 22:39:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8243 transitions. [2021-10-13 22:39:50,795 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8243 transitions. Word has length 115 [2021-10-13 22:39:50,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:50,795 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 8243 transitions. [2021-10-13 22:39:50,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:50,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8243 transitions. [2021-10-13 22:39:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:50,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:50,797 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 22:39:50,830 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 22:39:50,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-10-13 22:39:50,998 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:50,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1336257942, now seen corresponding path program 140 times [2021-10-13 22:39:50,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:50,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516790759] [2021-10-13 22:39:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:50,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:51,256 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 22:39:51,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516790759] [2021-10-13 22:39:51,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516790759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723883460] [2021-10-13 22:39:51,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:51,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:51,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:51,257 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 22:39:51,258 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 22:39:56,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:56,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:56,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:39:56,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:56,708 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 22:39:56,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723883460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:56,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:56,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:39:56,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265586460] [2021-10-13 22:39:56,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:56,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:56,709 INFO L87 Difference]: Start difference. First operand 2978 states and 8243 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 22:39:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:57,178 INFO L93 Difference]: Finished difference Result 4346 states and 11182 transitions. [2021-10-13 22:39:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:39:57,178 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 22:39:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:57,183 INFO L225 Difference]: With dead ends: 4346 [2021-10-13 22:39:57,183 INFO L226 Difference]: Without dead ends: 4076 [2021-10-13 22:39:57,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 495.9ms TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:39:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-13 22:39:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3053. [2021-10-13 22:39:57,214 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 22:39:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8468 transitions. [2021-10-13 22:39:57,219 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8468 transitions. Word has length 115 [2021-10-13 22:39:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:57,219 INFO L470 AbstractCegarLoop]: Abstraction has 3053 states and 8468 transitions. [2021-10-13 22:39:57,219 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 22:39:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8468 transitions. [2021-10-13 22:39:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:39:57,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:57,221 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 22:39:57,255 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 22:39:57,422 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,SelfDestructingSolverStorable150 [2021-10-13 22:39:57,422 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1868508040, now seen corresponding path program 141 times [2021-10-13 22:39:57,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:57,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204623008] [2021-10-13 22:39:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:57,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:57,617 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 22:39:57,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:57,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204623008] [2021-10-13 22:39:57,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204623008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:57,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131258118] [2021-10-13 22:39:57,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:57,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:57,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:57,618 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 22:39:57,619 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 22:40:02,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:40:02,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:02,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 22:40:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:03,133 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 22:40:03,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131258118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:03,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:03,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:40:03,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347248261] [2021-10-13 22:40:03,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:40:03,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:03,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:40:03,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:40:03,136 INFO L87 Difference]: Start difference. First operand 3053 states and 8468 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:03,604 INFO L93 Difference]: Finished difference Result 4371 states and 11307 transitions. [2021-10-13 22:40:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:40:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:40:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:03,610 INFO L225 Difference]: With dead ends: 4371 [2021-10-13 22:40:03,610 INFO L226 Difference]: Without dead ends: 4101 [2021-10-13 22:40:03,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 437.4ms TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:40:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-10-13 22:40:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3128. [2021-10-13 22:40:03,642 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 22:40:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8693 transitions. [2021-10-13 22:40:03,646 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8693 transitions. Word has length 115 [2021-10-13 22:40:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:03,646 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 8693 transitions. [2021-10-13 22:40:03,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8693 transitions. [2021-10-13 22:40:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:03,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:03,649 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 22:40:03,682 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 22:40:03,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:03,849 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:03,850 INFO L82 PathProgramCache]: Analyzing trace with hash -82346648, now seen corresponding path program 142 times [2021-10-13 22:40:03,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:03,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277703292] [2021-10-13 22:40:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:03,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:04,156 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 22:40:04,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:04,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277703292] [2021-10-13 22:40:04,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277703292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:04,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492997671] [2021-10-13 22:40:04,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:40:04,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:04,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:04,158 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 22:40:04,159 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 22:40:09,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:09,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:09,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:09,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:09,679 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 22:40:09,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492997671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:09,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:09,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:40:09,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305710569] [2021-10-13 22:40:09,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:09,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:09,680 INFO L87 Difference]: Start difference. First operand 3128 states and 8693 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 22:40:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:10,195 INFO L93 Difference]: Finished difference Result 4396 states and 11432 transitions. [2021-10-13 22:40:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:40:10,195 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 22:40:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:10,200 INFO L225 Difference]: With dead ends: 4396 [2021-10-13 22:40:10,200 INFO L226 Difference]: Without dead ends: 4126 [2021-10-13 22:40:10,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 596.7ms TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:40:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-10-13 22:40:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3203. [2021-10-13 22:40:10,235 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 22:40:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8918 transitions. [2021-10-13 22:40:10,240 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8918 transitions. Word has length 115 [2021-10-13 22:40:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:10,240 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 8918 transitions. [2021-10-13 22:40:10,240 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 22:40:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8918 transitions. [2021-10-13 22:40:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:10,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:10,243 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 22:40:10,283 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 22:40:10,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:10,447 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:10,448 INFO L82 PathProgramCache]: Analyzing trace with hash -152528650, now seen corresponding path program 143 times [2021-10-13 22:40:10,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:10,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959646079] [2021-10-13 22:40:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:10,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:10,734 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 22:40:10,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:10,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959646079] [2021-10-13 22:40:10,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959646079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:10,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115594779] [2021-10-13 22:40:10,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:10,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:10,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:10,736 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 22:40:10,736 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 22:40:15,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:40:15,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:15,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:15,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:16,242 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 22:40:16,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115594779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:16,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:16,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:40:16,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284941554] [2021-10-13 22:40:16,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:40:16,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:40:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:40:16,244 INFO L87 Difference]: Start difference. First operand 3203 states and 8918 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:16,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:16,799 INFO L93 Difference]: Finished difference Result 4421 states and 11557 transitions. [2021-10-13 22:40:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:40:16,799 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:40:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:16,804 INFO L225 Difference]: With dead ends: 4421 [2021-10-13 22:40:16,804 INFO L226 Difference]: Without dead ends: 4151 [2021-10-13 22:40:16,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 552.4ms TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:40:16,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-10-13 22:40:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3278. [2021-10-13 22:40:16,835 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 22:40:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9143 transitions. [2021-10-13 22:40:16,839 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9143 transitions. Word has length 115 [2021-10-13 22:40:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:16,839 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 9143 transitions. [2021-10-13 22:40:16,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9143 transitions. [2021-10-13 22:40:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:16,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:16,842 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 22:40:16,876 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 22:40:17,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:17,043 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:17,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:17,043 INFO L82 PathProgramCache]: Analyzing trace with hash 721464806, now seen corresponding path program 144 times [2021-10-13 22:40:17,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:17,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83222860] [2021-10-13 22:40:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:17,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:17,237 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 22:40:17,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:17,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83222860] [2021-10-13 22:40:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83222860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:17,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711927903] [2021-10-13 22:40:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:17,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:17,238 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 22:40:17,238 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 22:40:22,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:40:22,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:22,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:22,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:22,754 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 22:40:22,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711927903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:22,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:22,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:40:22,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751120602] [2021-10-13 22:40:22,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:22,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:22,756 INFO L87 Difference]: Start difference. First operand 3278 states and 9143 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 22:40:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:23,326 INFO L93 Difference]: Finished difference Result 4446 states and 11682 transitions. [2021-10-13 22:40:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:40:23,327 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 22:40:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:23,332 INFO L225 Difference]: With dead ends: 4446 [2021-10-13 22:40:23,332 INFO L226 Difference]: Without dead ends: 4176 [2021-10-13 22:40:23,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 537.8ms TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:40:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-10-13 22:40:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3353. [2021-10-13 22:40:23,368 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 22:40:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9368 transitions. [2021-10-13 22:40:23,458 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9368 transitions. Word has length 115 [2021-10-13 22:40:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:23,458 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 9368 transitions. [2021-10-13 22:40:23,458 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 22:40:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9368 transitions. [2021-10-13 22:40:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:23,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:23,461 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 22:40:23,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2021-10-13 22:40:23,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:23,661 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1216758516, now seen corresponding path program 145 times [2021-10-13 22:40:23,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:23,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063477346] [2021-10-13 22:40:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:23,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:23,854 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 22:40:23,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:23,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063477346] [2021-10-13 22:40:23,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063477346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:23,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249339490] [2021-10-13 22:40:23,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:23,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:23,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:23,856 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 22:40:23,856 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 22:40:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:29,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:29,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:29,359 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 22:40:29,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249339490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:29,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:29,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:40:29,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461682831] [2021-10-13 22:40:29,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:40:29,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:40:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:40:29,360 INFO L87 Difference]: Start difference. First operand 3353 states and 9368 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:29,836 INFO L93 Difference]: Finished difference Result 4471 states and 11807 transitions. [2021-10-13 22:40:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:40:29,836 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:40:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:29,842 INFO L225 Difference]: With dead ends: 4471 [2021-10-13 22:40:29,842 INFO L226 Difference]: Without dead ends: 4201 [2021-10-13 22:40:29,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 444.9ms TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:40:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-10-13 22:40:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3428. [2021-10-13 22:40:29,880 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 22:40:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9593 transitions. [2021-10-13 22:40:29,884 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9593 transitions. Word has length 115 [2021-10-13 22:40:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:29,884 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 9593 transitions. [2021-10-13 22:40:29,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:29,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9593 transitions. [2021-10-13 22:40:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:29,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:29,887 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 22:40:29,954 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 22:40:30,088 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,SelfDestructingSolverStorable155 [2021-10-13 22:40:30,088 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:30,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1328102428, now seen corresponding path program 146 times [2021-10-13 22:40:30,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:30,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476766828] [2021-10-13 22:40:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:30,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:30,388 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 22:40:30,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:30,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476766828] [2021-10-13 22:40:30,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476766828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:30,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684265534] [2021-10-13 22:40:30,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:40:30,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:30,389 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 22:40:30,390 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 22:40:35,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:40:35,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:35,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:35,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:35,936 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 22:40:35,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684265534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:35,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:35,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:40:35,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584975833] [2021-10-13 22:40:35,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:35,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:35,937 INFO L87 Difference]: Start difference. First operand 3428 states and 9593 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 22:40:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:36,541 INFO L93 Difference]: Finished difference Result 4496 states and 11932 transitions. [2021-10-13 22:40:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:40:36,541 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 22:40:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:36,546 INFO L225 Difference]: With dead ends: 4496 [2021-10-13 22:40:36,546 INFO L226 Difference]: Without dead ends: 4226 [2021-10-13 22:40:36,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 559.0ms TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:40:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-10-13 22:40:36,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3503. [2021-10-13 22:40:36,679 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 22:40:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9818 transitions. [2021-10-13 22:40:36,683 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9818 transitions. Word has length 115 [2021-10-13 22:40:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:36,683 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 9818 transitions. [2021-10-13 22:40:36,683 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 22:40:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9818 transitions. [2021-10-13 22:40:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:36,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:36,687 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 22:40:36,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2021-10-13 22:40:36,887 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,SelfDestructingSolverStorable156 [2021-10-13 22:40:36,887 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash -418205070, now seen corresponding path program 147 times [2021-10-13 22:40:36,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:36,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851304973] [2021-10-13 22:40:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:36,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:37,270 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 22:40:37,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:37,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851304973] [2021-10-13 22:40:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851304973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:37,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136744684] [2021-10-13 22:40:37,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:40:37,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:37,272 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 22:40:37,300 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 22:40:42,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:40:42,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:42,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 22:40:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:43,000 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 22:40:43,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136744684] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:43,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:40:43,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401381771] [2021-10-13 22:40:43,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:40:43,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:40:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:40:43,001 INFO L87 Difference]: Start difference. First operand 3503 states and 9818 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:43,548 INFO L93 Difference]: Finished difference Result 4566 states and 12177 transitions. [2021-10-13 22:40:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:40:43,548 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:40:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:43,555 INFO L225 Difference]: With dead ends: 4566 [2021-10-13 22:40:43,555 INFO L226 Difference]: Without dead ends: 4296 [2021-10-13 22:40:43,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 573.5ms TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:40:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-10-13 22:40:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3578. [2021-10-13 22:40:43,606 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 22:40:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 10058 transitions. [2021-10-13 22:40:43,612 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 10058 transitions. Word has length 115 [2021-10-13 22:40:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:43,612 INFO L470 AbstractCegarLoop]: Abstraction has 3578 states and 10058 transitions. [2021-10-13 22:40:43,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 10058 transitions. [2021-10-13 22:40:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:43,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:43,616 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 22:40:43,652 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 22:40:43,816 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,SelfDestructingSolverStorable157 [2021-10-13 22:40:43,816 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:43,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash -286089374, now seen corresponding path program 148 times [2021-10-13 22:40:43,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:43,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667943445] [2021-10-13 22:40:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:43,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:44,012 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 22:40:44,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:44,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667943445] [2021-10-13 22:40:44,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667943445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:44,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239846917] [2021-10-13 22:40:44,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:40:44,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:44,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:44,013 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 22:40:44,014 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 22:40:49,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:49,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:49,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:49,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:49,634 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 22:40:49,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239846917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:49,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:49,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:40:49,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383006] [2021-10-13 22:40:49,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:49,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:49,635 INFO L87 Difference]: Start difference. First operand 3578 states and 10058 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 22:40:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:50,427 INFO L93 Difference]: Finished difference Result 5144 states and 13803 transitions. [2021-10-13 22:40:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:40:50,427 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 22:40:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:50,434 INFO L225 Difference]: With dead ends: 5144 [2021-10-13 22:40:50,434 INFO L226 Difference]: Without dead ends: 4521 [2021-10-13 22:40:50,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 636.4ms TimeCoverageRelationStatistics Valid=934, Invalid=2726, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:40:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-10-13 22:40:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3653. [2021-10-13 22:40:50,468 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 22:40:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10288 transitions. [2021-10-13 22:40:50,473 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10288 transitions. Word has length 115 [2021-10-13 22:40:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:50,473 INFO L470 AbstractCegarLoop]: Abstraction has 3653 states and 10288 transitions. [2021-10-13 22:40:50,473 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 22:40:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10288 transitions. [2021-10-13 22:40:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:50,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:50,476 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 22:40:50,512 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 22:40:50,676 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,SelfDestructingSolverStorable158 [2021-10-13 22:40:50,677 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash -742471824, now seen corresponding path program 149 times [2021-10-13 22:40:50,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:50,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482558057] [2021-10-13 22:40:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:50,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:50,888 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 22:40:50,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:50,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482558057] [2021-10-13 22:40:50,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482558057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:50,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734377470] [2021-10-13 22:40:50,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:50,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:50,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:50,891 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 22:40:50,919 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 22:40:56,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:40:56,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:56,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 22:40:56,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:56,694 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 22:40:56,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734377470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:56,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:56,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 22:40:56,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077670144] [2021-10-13 22:40:56,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 22:40:56,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 22:40:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:40:56,695 INFO L87 Difference]: Start difference. First operand 3653 states and 10288 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:57,226 INFO L93 Difference]: Finished difference Result 5348 states and 14471 transitions. [2021-10-13 22:40:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:40:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 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 22:40:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:57,233 INFO L225 Difference]: With dead ends: 5348 [2021-10-13 22:40:57,233 INFO L226 Difference]: Without dead ends: 5078 [2021-10-13 22:40:57,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 513.5ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:40:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2021-10-13 22:40:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 3833. [2021-10-13 22:40:57,278 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 22:40:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 10847 transitions. [2021-10-13 22:40:57,284 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 10847 transitions. Word has length 115 [2021-10-13 22:40:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:57,284 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 10847 transitions. [2021-10-13 22:40:57,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 10847 transitions. [2021-10-13 22:40:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 22:40:57,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:57,288 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 22:40:57,322 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 22:40:57,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:57,488 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:57,488 INFO L82 PathProgramCache]: Analyzing trace with hash -677229534, now seen corresponding path program 150 times [2021-10-13 22:40:57,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:57,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107742938] [2021-10-13 22:40:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:57,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:57,670 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 22:40:57,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:57,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107742938] [2021-10-13 22:40:57,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107742938] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:57,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999729156] [2021-10-13 22:40:57,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:57,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:57,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:57,671 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 22:40:57,672 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 22:41:03,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:41:03,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:03,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:03,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:03,562 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 22:41:03,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999729156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:03,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:03,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 22:41:03,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557787078] [2021-10-13 22:41:03,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:03,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:03,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:03,564 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 22:41:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:04,204 INFO L93 Difference]: Finished difference Result 4810 states and 13121 transitions. [2021-10-13 22:41:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:41:04,205 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 22:41:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:04,210 INFO L225 Difference]: With dead ends: 4810 [2021-10-13 22:41:04,210 INFO L226 Difference]: Without dead ends: 4321 [2021-10-13 22:41:04,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 590.4ms TimeCoverageRelationStatistics Valid=949, Invalid=2711, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 22:41:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2021-10-13 22:41:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 3778. [2021-10-13 22:41:04,243 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 22:41:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 10683 transitions. [2021-10-13 22:41:04,248 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 10683 transitions. Word has length 115 [2021-10-13 22:41:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:04,248 INFO L470 AbstractCegarLoop]: Abstraction has 3778 states and 10683 transitions. [2021-10-13 22:41:04,248 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 22:41:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 10683 transitions. [2021-10-13 22:41:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:04,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:04,251 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 22:41:04,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2021-10-13 22:41:04,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:04,452 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:04,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1927187540, now seen corresponding path program 151 times [2021-10-13 22:41:04,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:04,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644338735] [2021-10-13 22:41:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:04,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:04,796 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 22:41:04,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:04,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644338735] [2021-10-13 22:41:04,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644338735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:04,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170868722] [2021-10-13 22:41:04,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:41:04,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:04,798 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 22:41:04,798 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 22:41:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:10,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 22:41:10,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:10,829 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 22:41:10,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170868722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:10,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:10,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2021-10-13 22:41:10,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770566907] [2021-10-13 22:41:10,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 22:41:10,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 22:41:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:41:10,831 INFO L87 Difference]: Start difference. First operand 3778 states and 10683 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:11,235 INFO L93 Difference]: Finished difference Result 4868 states and 13183 transitions. [2021-10-13 22:41:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:41:11,235 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 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 22:41:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:11,242 INFO L225 Difference]: With dead ends: 4868 [2021-10-13 22:41:11,242 INFO L226 Difference]: Without dead ends: 4534 [2021-10-13 22:41:11,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 460.2ms TimeCoverageRelationStatistics Valid=680, Invalid=1870, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:41:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2021-10-13 22:41:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 3863. [2021-10-13 22:41:11,321 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 22:41:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 10853 transitions. [2021-10-13 22:41:11,326 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 10853 transitions. Word has length 120 [2021-10-13 22:41:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:11,326 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 10853 transitions. [2021-10-13 22:41:11,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 10853 transitions. [2021-10-13 22:41:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:11,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:11,330 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 22:41:11,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2021-10-13 22:41:11,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:11,533 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:11,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:11,533 INFO L82 PathProgramCache]: Analyzing trace with hash -995481192, now seen corresponding path program 152 times [2021-10-13 22:41:11,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:11,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095354693] [2021-10-13 22:41:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:11,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:11,775 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 22:41:11,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:11,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095354693] [2021-10-13 22:41:11,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095354693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:11,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979436443] [2021-10-13 22:41:11,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:11,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:11,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:11,777 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 22:41:11,777 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 22:41:17,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:17,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:17,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:17,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:17,868 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 22:41:17,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979436443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:17,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:17,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:17,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063064152] [2021-10-13 22:41:17,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:17,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:17,869 INFO L87 Difference]: Start difference. First operand 3863 states and 10853 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 22:41:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:18,285 INFO L93 Difference]: Finished difference Result 5561 states and 14377 transitions. [2021-10-13 22:41:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:41:18,286 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 22:41:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:18,292 INFO L225 Difference]: With dead ends: 5561 [2021-10-13 22:41:18,292 INFO L226 Difference]: Without dead ends: 5291 [2021-10-13 22:41:18,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 373.1ms TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:41:18,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2021-10-13 22:41:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 3878. [2021-10-13 22:41:18,327 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 22:41:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:18,332 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:18,332 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:18,332 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 22:41:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:18,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:18,336 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 22:41:18,371 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 22:41:18,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:18,536 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:18,537 INFO L82 PathProgramCache]: Analyzing trace with hash -209640824, now seen corresponding path program 153 times [2021-10-13 22:41:18,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:18,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614964373] [2021-10-13 22:41:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:18,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:18,789 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 22:41:18,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:18,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614964373] [2021-10-13 22:41:18,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614964373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:18,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418200461] [2021-10-13 22:41:18,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:18,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:18,790 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 22:41:18,791 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 22:41:24,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:41:24,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:24,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:24,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:24,948 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 22:41:24,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418200461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:24,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:24,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:41:24,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155776485] [2021-10-13 22:41:24,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:24,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:24,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:24,949 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:25,330 INFO L93 Difference]: Finished difference Result 5446 states and 14147 transitions. [2021-10-13 22:41:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:41:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:41:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:25,337 INFO L225 Difference]: With dead ends: 5446 [2021-10-13 22:41:25,337 INFO L226 Difference]: Without dead ends: 5176 [2021-10-13 22:41:25,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 443.8ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:41:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-10-13 22:41:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 3878. [2021-10-13 22:41:25,374 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 22:41:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:25,379 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:25,379 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:25,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:25,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:25,383 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 22:41:25,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:25,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable163 [2021-10-13 22:41:25,583 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:25,584 INFO L82 PathProgramCache]: Analyzing trace with hash -273475562, now seen corresponding path program 154 times [2021-10-13 22:41:25,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:25,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456135130] [2021-10-13 22:41:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:25,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:25,952 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 22:41:25,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:25,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456135130] [2021-10-13 22:41:25,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456135130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:25,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208701247] [2021-10-13 22:41:25,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:25,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:25,953 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 22:41:25,954 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 22:41:31,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:41:31,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:31,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:31,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:32,068 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 22:41:32,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208701247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:32,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:32,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:32,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363325230] [2021-10-13 22:41:32,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:32,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:32,092 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 22:41:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:32,439 INFO L93 Difference]: Finished difference Result 5421 states and 14097 transitions. [2021-10-13 22:41:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:41:32,440 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 22:41:32,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:32,446 INFO L225 Difference]: With dead ends: 5421 [2021-10-13 22:41:32,446 INFO L226 Difference]: Without dead ends: 5151 [2021-10-13 22:41:32,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 429.8ms TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:41:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-10-13 22:41:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 3878. [2021-10-13 22:41:32,486 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 22:41:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:32,492 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:32,492 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:32,492 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 22:41:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:32,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:32,496 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 22:41:32,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2021-10-13 22:41:32,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:32,696 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:32,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2058388218, now seen corresponding path program 155 times [2021-10-13 22:41:32,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:32,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748192783] [2021-10-13 22:41:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:32,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:32,943 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 22:41:32,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:32,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748192783] [2021-10-13 22:41:32,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748192783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:32,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488104505] [2021-10-13 22:41:32,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:41:32,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:32,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:32,945 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 22:41:32,945 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 22:41:38,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:41:38,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:38,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:38,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:39,145 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 22:41:39,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488104505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:39,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:39,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:41:39,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748821146] [2021-10-13 22:41:39,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:39,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:39,147 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:39,580 INFO L93 Difference]: Finished difference Result 5371 states and 13997 transitions. [2021-10-13 22:41:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:41:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:41:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:39,587 INFO L225 Difference]: With dead ends: 5371 [2021-10-13 22:41:39,587 INFO L226 Difference]: Without dead ends: 5101 [2021-10-13 22:41:39,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 480.7ms TimeCoverageRelationStatistics Valid=622, Invalid=1928, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:41:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-10-13 22:41:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3878. [2021-10-13 22:41:39,623 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 22:41:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:39,629 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:39,629 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:39,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:39,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:39,632 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 22:41:39,669 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 22:41:39,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:39,833 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:39,833 INFO L82 PathProgramCache]: Analyzing trace with hash -476156908, now seen corresponding path program 156 times [2021-10-13 22:41:39,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:39,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623179376] [2021-10-13 22:41:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:39,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:40,069 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 22:41:40,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:40,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623179376] [2021-10-13 22:41:40,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623179376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:40,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044632257] [2021-10-13 22:41:40,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:41:40,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:40,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:40,071 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 22:41:40,098 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 22:41:45,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:41:45,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:45,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:45,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:46,303 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 22:41:46,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044632257] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:46,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:46,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:41:46,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763667746] [2021-10-13 22:41:46,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:41:46,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:41:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:41:46,304 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 22:41:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:46,688 INFO L93 Difference]: Finished difference Result 5321 states and 13897 transitions. [2021-10-13 22:41:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:41:46,688 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 22:41:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:46,695 INFO L225 Difference]: With dead ends: 5321 [2021-10-13 22:41:46,695 INFO L226 Difference]: Without dead ends: 5051 [2021-10-13 22:41:46,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 411.4ms TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 22:41:46,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2021-10-13 22:41:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 3878. [2021-10-13 22:41:46,744 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 22:41:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:46,749 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:46,750 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:46,750 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 22:41:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:46,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:46,753 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 22:41:46,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2021-10-13 22:41:46,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-10-13 22:41:46,954 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:46,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1483260668, now seen corresponding path program 157 times [2021-10-13 22:41:46,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:46,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746115939] [2021-10-13 22:41:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:46,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:47,188 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 22:41:47,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:47,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746115939] [2021-10-13 22:41:47,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746115939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:47,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538252481] [2021-10-13 22:41:47,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:41:47,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:47,190 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 22:41:47,190 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 22:41:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:53,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:41:53,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:53,462 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 22:41:53,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538252481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:53,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:53,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:41:53,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358609889] [2021-10-13 22:41:53,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:41:53,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:41:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:41:53,464 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:53,952 INFO L93 Difference]: Finished difference Result 5271 states and 13797 transitions. [2021-10-13 22:41:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:41:53,952 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:41:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:53,958 INFO L225 Difference]: With dead ends: 5271 [2021-10-13 22:41:53,958 INFO L226 Difference]: Without dead ends: 5001 [2021-10-13 22:41:53,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 505.8ms TimeCoverageRelationStatistics Valid=652, Invalid=2104, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:41:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2021-10-13 22:41:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 3878. [2021-10-13 22:41:54,053 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 22:41:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:41:54,061 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:41:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:54,061 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:41:54,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:41:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:41:54,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:54,066 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 22:41:54,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:54,291 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,SelfDestructingSolverStorable167 [2021-10-13 22:41:54,291 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:54,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1348139630, now seen corresponding path program 158 times [2021-10-13 22:41:54,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:54,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842083113] [2021-10-13 22:41:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:54,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:54,507 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 22:41:54,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:54,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842083113] [2021-10-13 22:41:54,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842083113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:54,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824279798] [2021-10-13 22:41:54,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:54,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:54,509 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 22:41:54,509 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 22:42:00,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:42:00,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:00,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:00,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:00,825 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 22:42:00,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824279798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:00,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:00,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:42:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282962563] [2021-10-13 22:42:00,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:00,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:00,827 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 22:42:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:01,304 INFO L93 Difference]: Finished difference Result 5221 states and 13697 transitions. [2021-10-13 22:42:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:42:01,305 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 22:42:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:01,311 INFO L225 Difference]: With dead ends: 5221 [2021-10-13 22:42:01,311 INFO L226 Difference]: Without dead ends: 4951 [2021-10-13 22:42:01,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 451.8ms TimeCoverageRelationStatistics Valid=609, Invalid=1941, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:42:01,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2021-10-13 22:42:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 3878. [2021-10-13 22:42:01,351 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 22:42:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:01,357 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:01,357 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:01,357 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 22:42:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:01,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:01,361 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 22:42:01,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:01,564 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,SelfDestructingSolverStorable168 [2021-10-13 22:42:01,564 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1437515134, now seen corresponding path program 159 times [2021-10-13 22:42:01,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:01,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223714376] [2021-10-13 22:42:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:01,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:01,791 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 22:42:01,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:01,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223714376] [2021-10-13 22:42:01,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223714376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:01,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721592325] [2021-10-13 22:42:01,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:42:01,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:01,792 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 22:42:01,793 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 22:42:08,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:42:08,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:08,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 22:42:08,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:08,448 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 22:42:08,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721592325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:08,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:08,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:42:08,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661636048] [2021-10-13 22:42:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:08,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:08,449 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:08,952 INFO L93 Difference]: Finished difference Result 5171 states and 13597 transitions. [2021-10-13 22:42:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:42:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:42:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:08,958 INFO L225 Difference]: With dead ends: 5171 [2021-10-13 22:42:08,958 INFO L226 Difference]: Without dead ends: 4901 [2021-10-13 22:42:08,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 505.9ms TimeCoverageRelationStatistics Valid=619, Invalid=2137, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:42:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2021-10-13 22:42:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3878. [2021-10-13 22:42:08,997 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 22:42:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:09,002 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:09,002 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:09,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:09,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:09,006 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 22:42:09,047 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 22:42:09,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-10-13 22:42:09,217 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:09,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1969765232, now seen corresponding path program 160 times [2021-10-13 22:42:09,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:09,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166194373] [2021-10-13 22:42:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:09,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:09,427 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 22:42:09,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:09,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166194373] [2021-10-13 22:42:09,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166194373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:09,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804522811] [2021-10-13 22:42:09,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:42:09,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:09,429 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 22:42:09,429 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 22:42:15,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:42:15,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:15,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:15,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:15,727 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 22:42:15,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804522811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:15,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:15,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:42:15,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823381242] [2021-10-13 22:42:15,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:15,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:15,728 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 22:42:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:16,179 INFO L93 Difference]: Finished difference Result 5121 states and 13497 transitions. [2021-10-13 22:42:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:42:16,179 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 22:42:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:16,186 INFO L225 Difference]: With dead ends: 5121 [2021-10-13 22:42:16,186 INFO L226 Difference]: Without dead ends: 4851 [2021-10-13 22:42:16,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 443.3ms TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:42:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2021-10-13 22:42:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 3878. [2021-10-13 22:42:16,284 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 22:42:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:16,292 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:16,292 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:16,293 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 22:42:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:16,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:16,298 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 22:42:16,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:16,511 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,SelfDestructingSolverStorable170 [2021-10-13 22:42:16,511 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash -183603840, now seen corresponding path program 161 times [2021-10-13 22:42:16,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:16,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483815631] [2021-10-13 22:42:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:16,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:16,728 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 22:42:16,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:16,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483815631] [2021-10-13 22:42:16,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483815631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:16,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185722877] [2021-10-13 22:42:16,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:42:16,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:16,729 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 22:42:16,729 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 22:42:22,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-13 22:42:22,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:22,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:22,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:23,092 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 22:42:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185722877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:23,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:23,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:42:23,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749528370] [2021-10-13 22:42:23,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:23,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:23,098 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:23,670 INFO L93 Difference]: Finished difference Result 5071 states and 13397 transitions. [2021-10-13 22:42:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:42:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:42:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:23,677 INFO L225 Difference]: With dead ends: 5071 [2021-10-13 22:42:23,677 INFO L226 Difference]: Without dead ends: 4801 [2021-10-13 22:42:23,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 563.1ms TimeCoverageRelationStatistics Valid=760, Invalid=2432, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:42:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-10-13 22:42:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 3878. [2021-10-13 22:42:23,712 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 22:42:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:23,718 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:23,718 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:23,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:23,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:23,722 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 22:42:23,758 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 22:42:23,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-10-13 22:42:23,922 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash -253785842, now seen corresponding path program 162 times [2021-10-13 22:42:23,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:23,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30879202] [2021-10-13 22:42:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:23,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:24,125 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 22:42:24,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:24,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30879202] [2021-10-13 22:42:24,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30879202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:24,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616808094] [2021-10-13 22:42:24,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:42:24,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:24,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:24,126 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 22:42:24,126 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 22:42:30,116 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 22:42:30,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:30,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:30,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:30,448 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 22:42:30,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616808094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:30,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:30,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:42:30,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958695762] [2021-10-13 22:42:30,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:30,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:30,449 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 22:42:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:30,936 INFO L93 Difference]: Finished difference Result 5021 states and 13297 transitions. [2021-10-13 22:42:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:42:30,936 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 22:42:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:30,943 INFO L225 Difference]: With dead ends: 5021 [2021-10-13 22:42:30,943 INFO L226 Difference]: Without dead ends: 4751 [2021-10-13 22:42:30,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 463.4ms TimeCoverageRelationStatistics Valid=733, Invalid=2237, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:42:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2021-10-13 22:42:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 3878. [2021-10-13 22:42:30,984 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 22:42:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:30,989 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:30,989 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:30,990 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 22:42:30,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:30,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:30,993 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 22:42:31,032 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 22:42:31,193 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,SelfDestructingSolverStorable172 [2021-10-13 22:42:31,194 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:31,194 INFO L82 PathProgramCache]: Analyzing trace with hash 620207614, now seen corresponding path program 163 times [2021-10-13 22:42:31,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:31,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733914047] [2021-10-13 22:42:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:31,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:31,403 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 22:42:31,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:31,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733914047] [2021-10-13 22:42:31,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733914047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:31,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100714425] [2021-10-13 22:42:31,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:42:31,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:31,405 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 22:42:31,405 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 22:42:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:37,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:37,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:37,774 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 22:42:37,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100714425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:37,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:37,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:42:37,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495872200] [2021-10-13 22:42:37,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:37,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:37,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:37,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:37,775 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:38,391 INFO L93 Difference]: Finished difference Result 4971 states and 13197 transitions. [2021-10-13 22:42:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:42:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:42:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:38,398 INFO L225 Difference]: With dead ends: 4971 [2021-10-13 22:42:38,398 INFO L226 Difference]: Without dead ends: 4701 [2021-10-13 22:42:38,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 592.1ms TimeCoverageRelationStatistics Valid=838, Invalid=2584, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:42:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-10-13 22:42:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 3878. [2021-10-13 22:42:38,499 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 22:42:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:38,508 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:38,508 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:38,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:38,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:38,514 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 22:42:38,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:38,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:38,730 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:38,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1115501324, now seen corresponding path program 164 times [2021-10-13 22:42:38,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:38,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719596563] [2021-10-13 22:42:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:38,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:38,967 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 22:42:38,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:38,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719596563] [2021-10-13 22:42:38,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719596563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:38,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073746624] [2021-10-13 22:42:38,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:42:38,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:38,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:38,968 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 22:42:38,969 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 22:42:45,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:42:45,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:45,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:45,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:45,405 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 22:42:45,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073746624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:45,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:45,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:42:45,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132902491] [2021-10-13 22:42:45,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:42:45,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:42:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:42:45,406 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 22:42:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:45,918 INFO L93 Difference]: Finished difference Result 4921 states and 13097 transitions. [2021-10-13 22:42:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:42:45,918 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 22:42:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:45,924 INFO L225 Difference]: With dead ends: 4921 [2021-10-13 22:42:45,924 INFO L226 Difference]: Without dead ends: 4651 [2021-10-13 22:42:45,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 506.5ms TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:42:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2021-10-13 22:42:45,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 3878. [2021-10-13 22:42:45,962 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 22:42:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:45,968 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:45,968 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:45,968 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 22:42:45,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:45,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:45,971 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 22:42:46,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2021-10-13 22:42:46,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:46,172 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:46,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1429359620, now seen corresponding path program 165 times [2021-10-13 22:42:46,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:46,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43692055] [2021-10-13 22:42:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:46,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:46,372 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 22:42:46,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:46,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43692055] [2021-10-13 22:42:46,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43692055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:46,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667849566] [2021-10-13 22:42:46,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:42:46,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:46,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:46,374 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 22:42:46,374 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 22:42:52,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 22:42:52,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:52,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 22:42:52,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:42:52,737 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 22:42:52,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667849566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:52,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:42:52,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-13 22:42:52,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749275437] [2021-10-13 22:42:52,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 22:42:52,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:42:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 22:42:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:42:52,738 INFO L87 Difference]: Start difference. First operand 3878 states and 10883 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:42:53,348 INFO L93 Difference]: Finished difference Result 4871 states and 12997 transitions. [2021-10-13 22:42:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:42:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 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 22:42:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:42:53,355 INFO L225 Difference]: With dead ends: 4871 [2021-10-13 22:42:53,355 INFO L226 Difference]: Without dead ends: 4601 [2021-10-13 22:42:53,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 578.1ms TimeCoverageRelationStatistics Valid=799, Invalid=2623, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:42:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-10-13 22:42:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3878. [2021-10-13 22:42:53,390 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 22:42:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:42:53,395 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:42:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:42:53,395 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:42:53,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:42:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:42:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:42:53,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:42:53,398 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 22:42:53,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2021-10-13 22:42:53,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:53,599 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:42:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:42:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash -519462262, now seen corresponding path program 166 times [2021-10-13 22:42:53,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:42:53,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734456573] [2021-10-13 22:42:53,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:42:53,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:42:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:42:53,799 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 22:42:53,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:42:53,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734456573] [2021-10-13 22:42:53,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734456573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:42:53,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326851272] [2021-10-13 22:42:53,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:42:53,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:42:53,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:42:53,801 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 22:42:53,802 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 22:42:59,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:42:59,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:42:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 22:42:59,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:43:00,182 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 22:43:00,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326851272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:00,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:43:00,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 22:43:00,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179512066] [2021-10-13 22:43:00,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 22:43:00,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:43:00,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 22:43:00,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:43:00,183 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 22:43:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:43:00,784 INFO L93 Difference]: Finished difference Result 4821 states and 12897 transitions. [2021-10-13 22:43:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:43:00,784 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 22:43:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:43:00,789 INFO L225 Difference]: With dead ends: 4821 [2021-10-13 22:43:00,789 INFO L226 Difference]: Without dead ends: 4551 [2021-10-13 22:43:00,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 508.0ms TimeCoverageRelationStatistics Valid=921, Invalid=2501, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:43:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-10-13 22:43:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3878. [2021-10-13 22:43:00,824 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 22:43:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10883 transitions. [2021-10-13 22:43:00,829 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10883 transitions. Word has length 120 [2021-10-13 22:43:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:43:00,830 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 10883 transitions. [2021-10-13 22:43:00,830 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 22:43:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10883 transitions. [2021-10-13 22:43:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 22:43:00,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:43:00,833 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 22:43:00,871 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 22:43:01,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:01,034 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:43:01,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:43:01,034 INFO L82 PathProgramCache]: Analyzing trace with hash -387346566, now seen corresponding path program 167 times [2021-10-13 22:43:01,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:43:01,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005568057] [2021-10-13 22:43:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:43:01,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:43:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:43:01,231 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 22:43:01,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:43:01,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005568057] [2021-10-13 22:43:01,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005568057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:43:01,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619632145] [2021-10-13 22:43:01,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:43:01,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:43:01,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:43:01,233 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 22:43:01,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 22:43:06,060 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:43:06,060 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:43:07,089 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:43:07,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:07,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2021-10-13 22:43:07,290 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,SelfDestructingSolverStorable177 [2021-10-13 22:43:07,290 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 121 with TraceHistMax 9,while executing Executor. [2021-10-13 22:43:07,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:43:07,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 22:43:07,297 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:43:07,297 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:43:07,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:43:07 BasicIcfg [2021-10-13 22:43:07,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:43:07,300 INFO L168 Benchmark]: Toolchain (without parser) took 661523.22 ms. Allocated memory was 178.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 118.9 MB in the beginning and 1.1 GB in the end (delta: -946.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-13 22:43:07,301 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 178.3 MB. Free memory was 137.2 MB in the beginning and 137.1 MB in the end (delta: 132.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:43:07,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.20 ms. Allocated memory was 178.3 MB in the beginning and 226.5 MB in the end (delta: 48.2 MB). Free memory was 118.6 MB in the beginning and 188.4 MB in the end (delta: -69.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:07,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.30 ms. Allocated memory is still 226.5 MB. Free memory was 188.4 MB in the beginning and 186.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:07,303 INFO L168 Benchmark]: Boogie Preprocessor took 37.90 ms. Allocated memory is still 226.5 MB. Free memory was 186.8 MB in the beginning and 185.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:07,304 INFO L168 Benchmark]: RCFGBuilder took 269.88 ms. Allocated memory is still 226.5 MB. Free memory was 185.3 MB in the beginning and 172.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-13 22:43:07,304 INFO L168 Benchmark]: TraceAbstraction took 660730.16 ms. Allocated memory was 226.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 172.2 MB in the beginning and 1.1 GB in the end (delta: -893.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-13 22:43:07,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 178.3 MB. Free memory was 137.2 MB in the beginning and 137.1 MB in the end (delta: 132.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 429.20 ms. Allocated memory was 178.3 MB in the beginning and 226.5 MB in the end (delta: 48.2 MB). Free memory was 118.6 MB in the beginning and 188.4 MB in the end (delta: -69.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.30 ms. Allocated memory is still 226.5 MB. Free memory was 188.4 MB in the beginning and 186.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.90 ms. Allocated memory is still 226.5 MB. Free memory was 186.8 MB in the beginning and 185.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 269.88 ms. Allocated memory is still 226.5 MB. Free memory was 185.3 MB in the beginning and 172.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 660730.16 ms. Allocated memory was 226.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 172.2 MB in the beginning and 1.1 GB in the end (delta: -893.0 MB). Peak memory consumption was 1.1 GB. 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 121 with TraceHistMax 9,while executing Executor. - 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 121 with TraceHistMax 9,while executing Executor. - 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 121 with TraceHistMax 9,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 660602.6ms, OverallIterations: 178, TraceHistogramMax: 9, EmptinessCheckTime: 489.3ms, AutomataDifference: 61896.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 67.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17094 SDtfs, 112348 SDslu, 138443 SDs, 0 SdLazy, 25132 SolverSat, 15919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12754.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22277 GetRequests, 15602 SyntacticMatches, 0 SemanticMatches, 6675 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63722 ImplicationChecksByTransitivity, 58015.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3878occurred in iteration=163, InterpolantAutomatonStates: 5037, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6680.3ms AutomataMinimizationTime, 177 MinimizatonAttempts, 133428 StatesRemovedByMinimization, 177 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1635.5ms SsaConstructionTime, 4626.9ms SatisfiabilityAnalysisTime, 76355.4ms InterpolantComputationTime, 31524 NumberOfCodeBlocks, 31524 NumberOfCodeBlocksAsserted, 856 NumberOfCheckSat, 31177 ConstructedInterpolants, 0 QuantifiedInterpolants, 129295 SizeOfPredicates, 2266 NumberOfNonLiveVariables, 34188 ConjunctsInSsa, 3256 ConjunctsInUnsatCore, 347 InterpolantComputations, 7 PerfectInterpolantSequences, 36/51344 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