/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/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:30:31,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:30:32,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:30:32,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 22:30:32,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:30:32,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:30:32,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:30:32,066 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 22:30:32,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:30:32,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:30:32,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 22:30:32,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 22:30:32,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:30:32,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:30:32,085 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:30:32,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:30:32,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:30:32,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:30:32,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:30:32,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:30:32,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:30:32,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:30:32,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:30:32,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:30:32,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:30:32,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:30:32,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:30:32,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:30:32,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:30:32,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:30:32,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:30:32,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:30:32,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 22:30:32,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:30:32,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:30:32,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:30:32,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:30:32,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:30:32,317 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:30:32,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2021-10-13 22:30:32,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb9744d6/9827030d2c8047529de3e2009f454b6a/FLAG2c2c59a4f [2021-10-13 22:30:32,758 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:30:32,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2021-10-13 22:30:32,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb9744d6/9827030d2c8047529de3e2009f454b6a/FLAG2c2c59a4f [2021-10-13 22:30:32,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb9744d6/9827030d2c8047529de3e2009f454b6a [2021-10-13 22:30:32,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:30:32,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:30:32,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:30:32,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:30:32,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:30:32,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:32" (1/1) ... [2021-10-13 22:30:32,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff5fbd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:32, skipping insertion in model container [2021-10-13 22:30:32,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:32" (1/1) ... [2021-10-13 22:30:32,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:30:32,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:30:33,167 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/fib_bench-2.i[30922,30935] [2021-10-13 22:30:33,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:30:33,178 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:30:33,216 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/fib_bench-2.i[30922,30935] [2021-10-13 22:30:33,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:30:33,246 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:30:33,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33 WrapperNode [2021-10-13 22:30:33,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:30:33,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:30:33,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:30:33,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:30:33,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:30:33,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:30:33,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:30:33,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:30:33,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:30:33,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:30:33,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:30:33,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:30:33,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (1/1) ... [2021-10-13 22:30:33,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:30:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:33,372 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 22:30:33,403 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 22:30:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-10-13 22:30:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-10-13 22:30:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:30:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:30:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:30:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:30:33,422 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 22:30:33,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:30:33,693 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 22:30:33,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:33 BoogieIcfgContainer [2021-10-13 22:30:33,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:30:33,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:30:33,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:30:33,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:30:33,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:30:32" (1/3) ... [2021-10-13 22:30:33,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d23282c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:33, skipping insertion in model container [2021-10-13 22:30:33,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:33" (2/3) ... [2021-10-13 22:30:33,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d23282c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:33, skipping insertion in model container [2021-10-13 22:30:33,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:33" (3/3) ... [2021-10-13 22:30:33,701 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2021-10-13 22:30:33,706 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 22:30:33,706 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:30:33,706 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:30:33,706 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:30:33,743 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,744 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,744 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,744 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,744 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,744 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,744 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,745 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,745 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,745 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,745 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,745 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,746 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,751 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,751 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,753 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,755 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,757 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,761 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:30:33,775 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:30:33,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:30:33,826 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 22:30:33,826 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 22:30:33,853 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-10-13 22:30:33,917 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 22:30:33,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:33,934 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 22:30:33,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:33,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1934908895, now seen corresponding path program 1 times [2021-10-13 22:30:33,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:33,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699446764] [2021-10-13 22:30:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:33,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:34,278 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 22:30:34,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:34,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699446764] [2021-10-13 22:30:34,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699446764] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:34,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:34,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:30:34,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402946627] [2021-10-13 22:30:34,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:30:34,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:30:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:30:34,311 INFO L87 Difference]: Start difference. First operand has 933 states, 932 states have (on average 2.9313304721030042) internal successors, (2732), 932 states have internal predecessors, (2732), 0 states have call successors, (0), 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 22:30:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:34,498 INFO L93 Difference]: Finished difference Result 1756 states and 4724 transitions. [2021-10-13 22:30:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 22:30:34,499 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 22:30:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:34,527 INFO L225 Difference]: With dead ends: 1756 [2021-10-13 22:30:34,527 INFO L226 Difference]: Without dead ends: 1425 [2021-10-13 22:30:34,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:30:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-10-13 22:30:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-10-13 22:30:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.7184986595174263) internal successors, (3042), 1119 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-10-13 22:30:34,656 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-10-13 22:30:34,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:34,657 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-10-13 22:30:34,657 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 22:30:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-10-13 22:30:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 22:30:34,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:34,666 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] [2021-10-13 22:30:34,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:30:34,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1007583897, now seen corresponding path program 1 times [2021-10-13 22:30:34,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:34,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571952928] [2021-10-13 22:30:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:34,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:34,807 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 22:30:34,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:34,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571952928] [2021-10-13 22:30:34,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571952928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:34,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:34,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:30:34,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319165000] [2021-10-13 22:30:34,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:30:34,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:30:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:30:34,812 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:34,908 INFO L93 Difference]: Finished difference Result 1809 states and 4788 transitions. [2021-10-13 22:30:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:30:34,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 22:30:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:34,916 INFO L225 Difference]: With dead ends: 1809 [2021-10-13 22:30:34,916 INFO L226 Difference]: Without dead ends: 1505 [2021-10-13 22:30:34,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:30:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-13 22:30:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1184. [2021-10-13 22:30:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.679628064243449) internal successors, (3170), 1183 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3170 transitions. [2021-10-13 22:30:34,955 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3170 transitions. Word has length 37 [2021-10-13 22:30:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:34,956 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3170 transitions. [2021-10-13 22:30:34,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3170 transitions. [2021-10-13 22:30:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 22:30:34,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:34,958 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] [2021-10-13 22:30:34,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:30:34,959 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1664778053, now seen corresponding path program 2 times [2021-10-13 22:30:34,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:34,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501721585] [2021-10-13 22:30:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:34,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:35,054 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 22:30:35,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:35,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501721585] [2021-10-13 22:30:35,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501721585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:35,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:35,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:30:35,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535986972] [2021-10-13 22:30:35,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:30:35,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:30:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:30:35,057 INFO L87 Difference]: Start difference. First operand 1184 states and 3170 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:35,163 INFO L93 Difference]: Finished difference Result 2065 states and 5492 transitions. [2021-10-13 22:30:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 22:30:35,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 22:30:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:35,172 INFO L225 Difference]: With dead ends: 2065 [2021-10-13 22:30:35,173 INFO L226 Difference]: Without dead ends: 1734 [2021-10-13 22:30:35,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-13 22:30:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-10-13 22:30:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1304. [2021-10-13 22:30:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 2.7206446661550268) internal successors, (3545), 1303 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3545 transitions. [2021-10-13 22:30:35,213 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3545 transitions. Word has length 37 [2021-10-13 22:30:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:35,214 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 3545 transitions. [2021-10-13 22:30:35,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3545 transitions. [2021-10-13 22:30:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 22:30:35,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:35,218 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] [2021-10-13 22:30:35,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:30:35,219 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1626203799, now seen corresponding path program 1 times [2021-10-13 22:30:35,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:35,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646349041] [2021-10-13 22:30:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:35,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:35,342 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 22:30:35,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:35,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646349041] [2021-10-13 22:30:35,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646349041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:35,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:35,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 22:30:35,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624323758] [2021-10-13 22:30:35,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 22:30:35,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 22:30:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 22:30:35,344 INFO L87 Difference]: Start difference. First operand 1304 states and 3545 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:35,440 INFO L93 Difference]: Finished difference Result 2270 states and 6052 transitions. [2021-10-13 22:30:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 22:30:35,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 22:30:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:35,457 INFO L225 Difference]: With dead ends: 2270 [2021-10-13 22:30:35,457 INFO L226 Difference]: Without dead ends: 2003 [2021-10-13 22:30:35,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 22:30:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-10-13 22:30:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1514. [2021-10-13 22:30:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.701916721744878) internal successors, (4088), 1513 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-10-13 22:30:35,503 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-10-13 22:30:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:35,505 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-10-13 22:30:35,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-10-13 22:30:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:35,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:35,508 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, 1, 1] [2021-10-13 22:30:35,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:30:35,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1743769903, now seen corresponding path program 1 times [2021-10-13 22:30:35,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:35,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948049683] [2021-10-13 22:30:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:35,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:35,690 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 22:30:35,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:35,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948049683] [2021-10-13 22:30:35,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948049683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:35,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:35,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:30:35,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021109955] [2021-10-13 22:30:35,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:30:35,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:30:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:30:35,692 INFO L87 Difference]: Start difference. First operand 1514 states and 4088 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:35,769 INFO L93 Difference]: Finished difference Result 2203 states and 5812 transitions. [2021-10-13 22:30:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 22:30:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:35,796 INFO L225 Difference]: With dead ends: 2203 [2021-10-13 22:30:35,797 INFO L226 Difference]: Without dead ends: 2051 [2021-10-13 22:30:35,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 22:30:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-10-13 22:30:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1539. [2021-10-13 22:30:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 2.6937581274382314) internal successors, (4143), 1538 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4143 transitions. [2021-10-13 22:30:35,843 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4143 transitions. Word has length 42 [2021-10-13 22:30:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:35,843 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 4143 transitions. [2021-10-13 22:30:35,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4143 transitions. [2021-10-13 22:30:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:35,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:35,846 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] [2021-10-13 22:30:35,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:30:35,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash -295330536, now seen corresponding path program 1 times [2021-10-13 22:30:35,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:35,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465191839] [2021-10-13 22:30:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:35,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:35,986 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 22:30:35,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:35,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465191839] [2021-10-13 22:30:35,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465191839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:35,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338801391] [2021-10-13 22:30:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:35,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:35,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:35,992 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 22:30:35,993 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 22:30:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:36,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 22:30:36,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:36,499 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 22:30:36,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338801391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:36,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:36,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-13 22:30:36,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755697337] [2021-10-13 22:30:36,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:30:36,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:30:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 22:30:36,503 INFO L87 Difference]: Start difference. First operand 1539 states and 4143 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:36,652 INFO L93 Difference]: Finished difference Result 2651 states and 6900 transitions. [2021-10-13 22:30:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:30:36,652 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:36,665 INFO L225 Difference]: With dead ends: 2651 [2021-10-13 22:30:36,666 INFO L226 Difference]: Without dead ends: 2171 [2021-10-13 22:30:36,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 129.6ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:30:36,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-10-13 22:30:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1624. [2021-10-13 22:30:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.654343807763401) internal successors, (4308), 1623 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4308 transitions. [2021-10-13 22:30:36,721 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4308 transitions. Word has length 42 [2021-10-13 22:30:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:36,722 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 4308 transitions. [2021-10-13 22:30:36,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4308 transitions. [2021-10-13 22:30:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:36,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:36,726 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, 1, 1] [2021-10-13 22:30:36,755 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 22:30:36,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 22:30:36,940 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash -443133005, now seen corresponding path program 2 times [2021-10-13 22:30:36,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:36,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446742296] [2021-10-13 22:30:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:36,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,038 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 22:30:37,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446742296] [2021-10-13 22:30:37,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446742296] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:37,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:37,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:30:37,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162660871] [2021-10-13 22:30:37,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:30:37,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:30:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:30:37,045 INFO L87 Difference]: Start difference. First operand 1624 states and 4308 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:37,210 INFO L93 Difference]: Finished difference Result 3027 states and 7972 transitions. [2021-10-13 22:30:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:30:37,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:37,223 INFO L225 Difference]: With dead ends: 3027 [2021-10-13 22:30:37,223 INFO L226 Difference]: Without dead ends: 2581 [2021-10-13 22:30:37,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-13 22:30:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-10-13 22:30:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1771. [2021-10-13 22:30:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1770 states have (on average 2.6915254237288138) internal successors, (4764), 1770 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 4764 transitions. [2021-10-13 22:30:37,275 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 4764 transitions. Word has length 42 [2021-10-13 22:30:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:37,275 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 4764 transitions. [2021-10-13 22:30:37,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 4764 transitions. [2021-10-13 22:30:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 22:30:37,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:37,278 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, 1, 1] [2021-10-13 22:30:37,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 22:30:37,278 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:37,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1570253327, now seen corresponding path program 3 times [2021-10-13 22:30:37,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:37,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064997234] [2021-10-13 22:30:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:37,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,360 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 22:30:37,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064997234] [2021-10-13 22:30:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064997234] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:30:37,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:30:37,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 22:30:37,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244370605] [2021-10-13 22:30:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 22:30:37,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 22:30:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 22:30:37,362 INFO L87 Difference]: Start difference. First operand 1771 states and 4764 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:37,487 INFO L93 Difference]: Finished difference Result 3229 states and 8540 transitions. [2021-10-13 22:30:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:30:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 22:30:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:37,519 INFO L225 Difference]: With dead ends: 3229 [2021-10-13 22:30:37,519 INFO L226 Difference]: Without dead ends: 2914 [2021-10-13 22:30:37,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-10-13 22:30:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1981. [2021-10-13 22:30:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1980 states have (on average 2.68030303030303) internal successors, (5307), 1980 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 5307 transitions. [2021-10-13 22:30:37,573 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 5307 transitions. Word has length 42 [2021-10-13 22:30:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:37,574 INFO L470 AbstractCegarLoop]: Abstraction has 1981 states and 5307 transitions. [2021-10-13 22:30:37,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 5307 transitions. [2021-10-13 22:30:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:37,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:37,578 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, 1, 1] [2021-10-13 22:30:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 22:30:37,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1295186514, now seen corresponding path program 1 times [2021-10-13 22:30:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:37,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255323509] [2021-10-13 22:30:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:37,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,678 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 22:30:37,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:37,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255323509] [2021-10-13 22:30:37,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255323509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:37,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174846951] [2021-10-13 22:30:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:37,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:37,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:37,682 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 22:30:37,695 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 22:30:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:37,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:37,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:38,127 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 22:30:38,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174846951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:38,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:38,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:38,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904966804] [2021-10-13 22:30:38,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:38,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:38,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:38,130 INFO L87 Difference]: Start difference. First operand 1981 states and 5307 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:38,298 INFO L93 Difference]: Finished difference Result 3173 states and 8252 transitions. [2021-10-13 22:30:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:30:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-10-13 22:30:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:38,307 INFO L225 Difference]: With dead ends: 3173 [2021-10-13 22:30:38,307 INFO L226 Difference]: Without dead ends: 2781 [2021-10-13 22:30:38,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:30:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-10-13 22:30:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2030. [2021-10-13 22:30:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 2.6638738294726467) internal successors, (5405), 2029 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 5405 transitions. [2021-10-13 22:30:38,363 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 5405 transitions. Word has length 47 [2021-10-13 22:30:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:38,363 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 5405 transitions. [2021-10-13 22:30:38,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 5405 transitions. [2021-10-13 22:30:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:38,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:38,367 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, 1, 1] [2021-10-13 22:30:38,396 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 22:30:38,583 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 22:30:38,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:38,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:38,584 INFO L82 PathProgramCache]: Analyzing trace with hash 555482178, now seen corresponding path program 2 times [2021-10-13 22:30:38,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:38,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723824386] [2021-10-13 22:30:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:38,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:38,671 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 22:30:38,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:38,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723824386] [2021-10-13 22:30:38,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723824386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:38,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261991657] [2021-10-13 22:30:38,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:38,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:38,673 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 22:30:38,700 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 22:30:38,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:38,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:38,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:38,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:39,182 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 22:30:39,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261991657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:39,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:39,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:39,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974849240] [2021-10-13 22:30:39,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:39,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:39,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:39,184 INFO L87 Difference]: Start difference. First operand 2030 states and 5405 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:39,339 INFO L93 Difference]: Finished difference Result 3013 states and 7804 transitions. [2021-10-13 22:30:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:30:39,339 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-10-13 22:30:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:39,347 INFO L225 Difference]: With dead ends: 3013 [2021-10-13 22:30:39,347 INFO L226 Difference]: Without dead ends: 2861 [2021-10-13 22:30:39,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-13 22:30:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-10-13 22:30:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2064. [2021-10-13 22:30:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 2.6539020843431897) internal successors, (5475), 2063 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5475 transitions. [2021-10-13 22:30:39,430 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5475 transitions. Word has length 47 [2021-10-13 22:30:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:39,431 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 5475 transitions. [2021-10-13 22:30:39,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5475 transitions. [2021-10-13 22:30:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:39,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:39,435 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, 1, 1] [2021-10-13 22:30:39,459 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 22:30:39,657 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 22:30:39,657 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash -878237628, now seen corresponding path program 3 times [2021-10-13 22:30:39,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:39,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145364388] [2021-10-13 22:30:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:39,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:39,868 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 22:30:39,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:39,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145364388] [2021-10-13 22:30:39,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145364388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:39,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298259006] [2021-10-13 22:30:39,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:39,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:39,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:39,870 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 22:30:39,871 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 22:30:40,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 22:30:40,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:40,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:40,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:40,394 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 22:30:40,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298259006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:40,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:40,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:40,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543936864] [2021-10-13 22:30:40,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:40,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:40,396 INFO L87 Difference]: Start difference. First operand 2064 states and 5475 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:40,620 INFO L93 Difference]: Finished difference Result 3525 states and 9020 transitions. [2021-10-13 22:30:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:30:40,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-10-13 22:30:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:40,629 INFO L225 Difference]: With dead ends: 3525 [2021-10-13 22:30:40,629 INFO L226 Difference]: Without dead ends: 3045 [2021-10-13 22:30:40,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:30:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-10-13 22:30:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2094. [2021-10-13 22:30:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 2.661729574773053) internal successors, (5571), 2093 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 5571 transitions. [2021-10-13 22:30:40,677 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 5571 transitions. Word has length 47 [2021-10-13 22:30:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:40,677 INFO L470 AbstractCegarLoop]: Abstraction has 2094 states and 5571 transitions. [2021-10-13 22:30:40,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:40,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 5571 transitions. [2021-10-13 22:30:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:40,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:40,681 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, 1, 1] [2021-10-13 22:30:40,704 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 22:30:40,895 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 22:30:40,895 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash -310108718, now seen corresponding path program 4 times [2021-10-13 22:30:40,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:40,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858028349] [2021-10-13 22:30:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:40,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:41,003 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 22:30:41,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:41,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858028349] [2021-10-13 22:30:41,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858028349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:41,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881453203] [2021-10-13 22:30:41,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:30:41,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:41,007 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 22:30:41,009 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 22:30:41,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:30:41,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:41,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:41,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:41,577 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 22:30:41,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881453203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:41,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:41,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:41,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014144157] [2021-10-13 22:30:41,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:41,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:41,581 INFO L87 Difference]: Start difference. First operand 2094 states and 5571 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:41,928 INFO L93 Difference]: Finished difference Result 4570 states and 11964 transitions. [2021-10-13 22:30:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:30:41,929 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-10-13 22:30:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:41,940 INFO L225 Difference]: With dead ends: 4570 [2021-10-13 22:30:41,940 INFO L226 Difference]: Without dead ends: 3833 [2021-10-13 22:30:41,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 292.7ms TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:30:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-10-13 22:30:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2235. [2021-10-13 22:30:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2234 states have (on average 2.6965085049239033) internal successors, (6024), 2234 states have internal predecessors, (6024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 6024 transitions. [2021-10-13 22:30:41,995 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 6024 transitions. Word has length 47 [2021-10-13 22:30:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:41,995 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 6024 transitions. [2021-10-13 22:30:41,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 6024 transitions. [2021-10-13 22:30:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:41,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:41,999 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, 1, 1] [2021-10-13 22:30:42,026 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 22:30:42,215 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 22:30:42,216 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash -560647176, now seen corresponding path program 5 times [2021-10-13 22:30:42,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:42,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419351062] [2021-10-13 22:30:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:42,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:42,299 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 22:30:42,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:42,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419351062] [2021-10-13 22:30:42,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419351062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:42,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273123484] [2021-10-13 22:30:42,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:30:42,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:42,303 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 22:30:42,323 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 22:30:42,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:42,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:42,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:42,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:42,880 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 22:30:42,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273123484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:42,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:42,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:42,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312470299] [2021-10-13 22:30:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:42,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:42,881 INFO L87 Difference]: Start difference. First operand 2235 states and 6024 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:43,169 INFO L93 Difference]: Finished difference Result 4350 states and 11284 transitions. [2021-10-13 22:30:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:30:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-10-13 22:30:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:43,179 INFO L225 Difference]: With dead ends: 4350 [2021-10-13 22:30:43,179 INFO L226 Difference]: Without dead ends: 3958 [2021-10-13 22:30:43,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 228.1ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:30:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2021-10-13 22:30:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 2423. [2021-10-13 22:30:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 2.7345169281585466) internal successors, (6623), 2422 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-10-13 22:30:43,255 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-10-13 22:30:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:43,256 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-10-13 22:30:43,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-10-13 22:30:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 22:30:43,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:43,260 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, 1, 1] [2021-10-13 22:30:43,285 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 22:30:43,475 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 22:30:43,476 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 98925564, now seen corresponding path program 6 times [2021-10-13 22:30:43,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:43,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051807486] [2021-10-13 22:30:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:43,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:43,560 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 22:30:43,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:43,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051807486] [2021-10-13 22:30:43,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051807486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:43,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308239205] [2021-10-13 22:30:43,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:30:43,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:43,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:43,562 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 22:30:43,563 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 22:30:43,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 22:30:43,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:43,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 22:30:43,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:44,125 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 22:30:44,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308239205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:44,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:44,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 22:30:44,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407826537] [2021-10-13 22:30:44,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 22:30:44,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:44,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 22:30:44,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:30:44,127 INFO L87 Difference]: Start difference. First operand 2423 states and 6623 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:44,681 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-10-13 22:30:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:30:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 47 [2021-10-13 22:30:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:44,695 INFO L225 Difference]: With dead ends: 5771 [2021-10-13 22:30:44,695 INFO L226 Difference]: Without dead ends: 4898 [2021-10-13 22:30:44,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 464.6ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:30:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-10-13 22:30:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-10-13 22:30:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2816 states have (on average 2.7169744318181817) internal successors, (7651), 2816 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-10-13 22:30:44,798 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-10-13 22:30:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:44,798 INFO L470 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-10-13 22:30:44,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 22:30:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-10-13 22:30:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:44,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:44,802 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:30:44,826 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 22:30:45,018 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 22:30:45,018 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1391018205, now seen corresponding path program 7 times [2021-10-13 22:30:45,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:45,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552572372] [2021-10-13 22:30:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:45,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:45,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:45,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552572372] [2021-10-13 22:30:45,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552572372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:45,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772361685] [2021-10-13 22:30:45,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:30:45,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:45,203 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 22:30:45,204 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 22:30:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:45,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:45,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772361685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:45,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:45,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:45,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711012865] [2021-10-13 22:30:45,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:45,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:45,809 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:45,999 INFO L93 Difference]: Finished difference Result 4071 states and 10562 transitions. [2021-10-13 22:30:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:30:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:46,010 INFO L225 Difference]: With dead ends: 4071 [2021-10-13 22:30:46,010 INFO L226 Difference]: Without dead ends: 3919 [2021-10-13 22:30:46,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 226.3ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-10-13 22:30:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2021-10-13 22:30:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 2867. [2021-10-13 22:30:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2866 states have (on average 2.7079553384508026) internal successors, (7761), 2866 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 7761 transitions. [2021-10-13 22:30:46,073 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 7761 transitions. Word has length 52 [2021-10-13 22:30:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:46,073 INFO L470 AbstractCegarLoop]: Abstraction has 2867 states and 7761 transitions. [2021-10-13 22:30:46,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 7761 transitions. [2021-10-13 22:30:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:46,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:46,078 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:46,107 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 22:30:46,301 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 22:30:46,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:46,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1042815767, now seen corresponding path program 1 times [2021-10-13 22:30:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:46,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494472804] [2021-10-13 22:30:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:46,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:46,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:46,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494472804] [2021-10-13 22:30:46,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494472804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:46,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998297062] [2021-10-13 22:30:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:46,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:46,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:46,423 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 22:30:46,454 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 22:30:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:46,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:46,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:47,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998297062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:47,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:47,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:47,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664351754] [2021-10-13 22:30:47,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:47,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:47,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:47,097 INFO L87 Difference]: Start difference. First operand 2867 states and 7761 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:47,296 INFO L93 Difference]: Finished difference Result 4087 states and 10594 transitions. [2021-10-13 22:30:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 22:30:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:47,304 INFO L225 Difference]: With dead ends: 4087 [2021-10-13 22:30:47,304 INFO L226 Difference]: Without dead ends: 3935 [2021-10-13 22:30:47,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 190.8ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:30:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-10-13 22:30:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2917. [2021-10-13 22:30:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2916 states have (on average 2.6992455418381343) internal successors, (7871), 2916 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 7871 transitions. [2021-10-13 22:30:47,363 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 7871 transitions. Word has length 52 [2021-10-13 22:30:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:47,364 INFO L470 AbstractCegarLoop]: Abstraction has 2917 states and 7871 transitions. [2021-10-13 22:30:47,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 7871 transitions. [2021-10-13 22:30:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:47,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:47,369 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:47,395 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 22:30:47,583 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 22:30:47,583 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:47,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1516143985, now seen corresponding path program 2 times [2021-10-13 22:30:47,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:47,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453747821] [2021-10-13 22:30:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:47,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:47,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:47,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453747821] [2021-10-13 22:30:47,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453747821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:47,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687693294] [2021-10-13 22:30:47,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:47,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:47,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:47,694 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 22:30:47,695 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 22:30:47,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:47,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:47,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:47,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:48,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687693294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:48,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:48,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:48,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618186580] [2021-10-13 22:30:48,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:48,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:48,350 INFO L87 Difference]: Start difference. First operand 2917 states and 7871 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:48,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:48,528 INFO L93 Difference]: Finished difference Result 3927 states and 10274 transitions. [2021-10-13 22:30:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 22:30:48,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:48,535 INFO L225 Difference]: With dead ends: 3927 [2021-10-13 22:30:48,568 INFO L226 Difference]: Without dead ends: 3775 [2021-10-13 22:30:48,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 192.7ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:30:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-10-13 22:30:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 2916. [2021-10-13 22:30:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 2.697770154373928) internal successors, (7864), 2915 states have internal predecessors, (7864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 7864 transitions. [2021-10-13 22:30:48,617 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 7864 transitions. Word has length 52 [2021-10-13 22:30:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:48,617 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 7864 transitions. [2021-10-13 22:30:48,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 7864 transitions. [2021-10-13 22:30:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:48,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:48,622 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:30:48,647 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 22:30:48,835 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 22:30:48,835 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash 288934477, now seen corresponding path program 8 times [2021-10-13 22:30:48,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:48,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839075760] [2021-10-13 22:30:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:48,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:48,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:48,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839075760] [2021-10-13 22:30:48,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839075760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:48,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109440481] [2021-10-13 22:30:48,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:30:48,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:48,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:48,947 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 22:30:48,949 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 22:30:49,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:30:49,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:49,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:49,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:49,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109440481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:49,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:49,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:49,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969516938] [2021-10-13 22:30:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:49,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:49,613 INFO L87 Difference]: Start difference. First operand 2916 states and 7864 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:49,842 INFO L93 Difference]: Finished difference Result 4236 states and 10907 transitions. [2021-10-13 22:30:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:30:49,843 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:49,850 INFO L225 Difference]: With dead ends: 4236 [2021-10-13 22:30:49,850 INFO L226 Difference]: Without dead ends: 4084 [2021-10-13 22:30:49,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:30:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-10-13 22:30:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2891. [2021-10-13 22:30:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2890 states have (on average 2.702076124567474) internal successors, (7809), 2890 states have internal predecessors, (7809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 7809 transitions. [2021-10-13 22:30:49,914 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 7809 transitions. Word has length 52 [2021-10-13 22:30:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:49,914 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 7809 transitions. [2021-10-13 22:30:49,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 7809 transitions. [2021-10-13 22:30:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:49,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:49,919 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:30:49,945 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 22:30:50,132 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 22:30:50,133 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:50,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1432623815, now seen corresponding path program 9 times [2021-10-13 22:30:50,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:50,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350741157] [2021-10-13 22:30:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:50,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:50,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:50,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350741157] [2021-10-13 22:30:50,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350741157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:50,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819332574] [2021-10-13 22:30:50,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:50,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:50,227 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 22:30:50,257 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 22:30:50,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:30:50,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:50,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:50,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:50,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819332574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:50,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:50,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:50,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622121351] [2021-10-13 22:30:50,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:50,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:50,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:50,955 INFO L87 Difference]: Start difference. First operand 2891 states and 7809 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:51,268 INFO L93 Difference]: Finished difference Result 5047 states and 13218 transitions. [2021-10-13 22:30:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:30:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:51,275 INFO L225 Difference]: With dead ends: 5047 [2021-10-13 22:30:51,275 INFO L226 Difference]: Without dead ends: 4743 [2021-10-13 22:30:51,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 276.8ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:30:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2021-10-13 22:30:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 3086. [2021-10-13 22:30:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3085 states have (on average 2.7354943273905996) internal successors, (8439), 3085 states have internal predecessors, (8439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 8439 transitions. [2021-10-13 22:30:51,343 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 8439 transitions. Word has length 52 [2021-10-13 22:30:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:51,343 INFO L470 AbstractCegarLoop]: Abstraction has 3086 states and 8439 transitions. [2021-10-13 22:30:51,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:51,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 8439 transitions. [2021-10-13 22:30:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:51,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:51,348 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:30:51,372 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 22:30:51,570 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 22:30:51,570 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:51,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:51,571 INFO L82 PathProgramCache]: Analyzing trace with hash -773051075, now seen corresponding path program 10 times [2021-10-13 22:30:51,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:51,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166751632] [2021-10-13 22:30:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:51,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:51,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:51,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166751632] [2021-10-13 22:30:51,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166751632] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:51,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545628686] [2021-10-13 22:30:51,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:30:51,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:51,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:51,663 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 22:30:51,663 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 22:30:52,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:30:52,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:52,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:52,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:52,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545628686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:52,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:52,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:52,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142313890] [2021-10-13 22:30:52,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:52,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:52,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:52,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:52,353 INFO L87 Difference]: Start difference. First operand 3086 states and 8439 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:52,925 INFO L93 Difference]: Finished difference Result 6180 states and 16594 transitions. [2021-10-13 22:30:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:30:52,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:52,933 INFO L225 Difference]: With dead ends: 6180 [2021-10-13 22:30:52,933 INFO L226 Difference]: Without dead ends: 5504 [2021-10-13 22:30:52,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 487.2ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:30:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2021-10-13 22:30:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 3235. [2021-10-13 22:30:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 2.7680890538033394) internal successors, (8952), 3234 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 8952 transitions. [2021-10-13 22:30:52,996 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 8952 transitions. Word has length 52 [2021-10-13 22:30:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:52,996 INFO L470 AbstractCegarLoop]: Abstraction has 3235 states and 8952 transitions. [2021-10-13 22:30:52,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 8952 transitions. [2021-10-13 22:30:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:53,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:53,002 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:53,028 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 22:30:53,215 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 22:30:53,215 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2127839103, now seen corresponding path program 3 times [2021-10-13 22:30:53,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:53,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601299959] [2021-10-13 22:30:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:53,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:53,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:53,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601299959] [2021-10-13 22:30:53,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601299959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:53,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499216454] [2021-10-13 22:30:53,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:30:53,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:53,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:53,315 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 22:30:53,339 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 22:30:53,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:30:53,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:53,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:53,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:54,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499216454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:54,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:54,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:54,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879477903] [2021-10-13 22:30:54,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:54,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:54,113 INFO L87 Difference]: Start difference. First operand 3235 states and 8952 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:54,389 INFO L93 Difference]: Finished difference Result 5014 states and 13181 transitions. [2021-10-13 22:30:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:30:54,390 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:54,397 INFO L225 Difference]: With dead ends: 5014 [2021-10-13 22:30:54,397 INFO L226 Difference]: Without dead ends: 4862 [2021-10-13 22:30:54,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 259.4ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:30:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-10-13 22:30:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 3275. [2021-10-13 22:30:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 2.775809407452657) internal successors, (9088), 3274 states have internal predecessors, (9088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 9088 transitions. [2021-10-13 22:30:54,475 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 9088 transitions. Word has length 52 [2021-10-13 22:30:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:54,475 INFO L470 AbstractCegarLoop]: Abstraction has 3275 states and 9088 transitions. [2021-10-13 22:30:54,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 9088 transitions. [2021-10-13 22:30:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:54,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:54,480 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:54,504 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 22:30:54,702 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 22:30:54,702 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1001785285, now seen corresponding path program 4 times [2021-10-13 22:30:54,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:54,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170514103] [2021-10-13 22:30:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:54,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:54,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:54,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170514103] [2021-10-13 22:30:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170514103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:54,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573390511] [2021-10-13 22:30:54,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:30:54,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:54,816 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 22:30:54,817 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 22:30:55,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:30:55,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:55,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:55,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:55,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573390511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:55,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:55,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:55,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379070025] [2021-10-13 22:30:55,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:55,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:55,587 INFO L87 Difference]: Start difference. First operand 3275 states and 9088 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:55,916 INFO L93 Difference]: Finished difference Result 5278 states and 14184 transitions. [2021-10-13 22:30:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:30:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:55,925 INFO L225 Difference]: With dead ends: 5278 [2021-10-13 22:30:55,925 INFO L226 Difference]: Without dead ends: 5126 [2021-10-13 22:30:55,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 286.1ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:30:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2021-10-13 22:30:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 3363. [2021-10-13 22:30:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.796252230814991) internal successors, (9401), 3362 states have internal predecessors, (9401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 9401 transitions. [2021-10-13 22:30:55,989 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 9401 transitions. Word has length 52 [2021-10-13 22:30:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:55,990 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 9401 transitions. [2021-10-13 22:30:55,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 9401 transitions. [2021-10-13 22:30:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 22:30:55,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:55,994 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:30:56,021 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 22:30:56,203 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 22:30:56,203 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:56,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1661358025, now seen corresponding path program 5 times [2021-10-13 22:30:56,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:56,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841484134] [2021-10-13 22:30:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:56,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:56,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:56,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841484134] [2021-10-13 22:30:56,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841484134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:56,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738918649] [2021-10-13 22:30:56,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:30:56,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:56,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:56,313 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 22:30:56,315 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 22:30:56,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:30:56,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:56,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 22:30:56,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:57,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738918649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:57,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:57,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-10-13 22:30:57,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510836693] [2021-10-13 22:30:57,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 22:30:57,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 22:30:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-13 22:30:57,192 INFO L87 Difference]: Start difference. First operand 3363 states and 9401 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:57,696 INFO L93 Difference]: Finished difference Result 6683 states and 18179 transitions. [2021-10-13 22:30:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:30:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 22:30:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:57,706 INFO L225 Difference]: With dead ends: 6683 [2021-10-13 22:30:57,706 INFO L226 Difference]: Without dead ends: 6253 [2021-10-13 22:30:57,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 438.7ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:30:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2021-10-13 22:30:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3417. [2021-10-13 22:30:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-10-13 22:30:57,764 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-10-13 22:30:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-10-13 22:30:57,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-10-13 22:30:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:30:57,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:57,769 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:30:57,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:57,970 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 22:30:57,970 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1423398322, now seen corresponding path program 11 times [2021-10-13 22:30:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:57,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616433714] [2021-10-13 22:30:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:57,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:58,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:58,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616433714] [2021-10-13 22:30:58,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616433714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:58,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649463529] [2021-10-13 22:30:58,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:30:58,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:58,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:58,114 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 22:30:58,147 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 22:30:58,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:30:58,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:30:58,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:30:58,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:30:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:59,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649463529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:59,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:30:59,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:30:59,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544375805] [2021-10-13 22:30:59,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:30:59,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:30:59,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:30:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:30:59,167 INFO L87 Difference]: Start difference. First operand 3417 states and 9458 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:30:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:30:59,332 INFO L93 Difference]: Finished difference Result 4859 states and 12861 transitions. [2021-10-13 22:30:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 22:30:59,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:30:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:30:59,338 INFO L225 Difference]: With dead ends: 4859 [2021-10-13 22:30:59,338 INFO L226 Difference]: Without dead ends: 4707 [2021-10-13 22:30:59,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-10-13 22:30:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2021-10-13 22:30:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 3492. [2021-10-13 22:30:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 2.75651675737611) internal successors, (9623), 3491 states have internal predecessors, (9623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:30:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 9623 transitions. [2021-10-13 22:30:59,401 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 9623 transitions. Word has length 57 [2021-10-13 22:30:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:30:59,401 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 9623 transitions. [2021-10-13 22:30:59,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:30:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 9623 transitions. [2021-10-13 22:30:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:30:59,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:30:59,407 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:30:59,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 22:30:59,611 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 22:30:59,612 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:30:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:30:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 427270370, now seen corresponding path program 12 times [2021-10-13 22:30:59,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:30:59,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812867447] [2021-10-13 22:30:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:30:59,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:30:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:30:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:30:59,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:30:59,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812867447] [2021-10-13 22:30:59,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812867447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:30:59,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481975710] [2021-10-13 22:30:59,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:30:59,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:30:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:30:59,731 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 22:30:59,775 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 22:31:00,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:31:00,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:00,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:00,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:00,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481975710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:00,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:00,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778042022] [2021-10-13 22:31:00,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:00,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:00,931 INFO L87 Difference]: Start difference. First operand 3492 states and 9623 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:01,174 INFO L93 Difference]: Finished difference Result 5275 states and 13821 transitions. [2021-10-13 22:31:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:31:01,175 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:01,183 INFO L225 Difference]: With dead ends: 5275 [2021-10-13 22:31:01,184 INFO L226 Difference]: Without dead ends: 4883 [2021-10-13 22:31:01,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 265.0ms TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:31:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2021-10-13 22:31:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3457. [2021-10-13 22:31:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3456 states have (on average 2.759837962962963) internal successors, (9538), 3456 states have internal predecessors, (9538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 9538 transitions. [2021-10-13 22:31:01,250 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 9538 transitions. Word has length 57 [2021-10-13 22:31:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:01,250 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 9538 transitions. [2021-10-13 22:31:01,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 9538 transitions. [2021-10-13 22:31:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:01,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:01,257 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, 1, 1] [2021-10-13 22:31:01,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:01,481 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 22:31:01,481 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1433862954, now seen corresponding path program 6 times [2021-10-13 22:31:01,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:01,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741722008] [2021-10-13 22:31:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:01,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:01,592 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 22:31:01,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:01,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741722008] [2021-10-13 22:31:01,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741722008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:01,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540298033] [2021-10-13 22:31:01,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:01,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:01,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:01,593 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 22:31:01,607 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 22:31:02,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:31:02,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:02,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:02,600 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 22:31:02,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540298033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:02,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:02,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:02,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140940970] [2021-10-13 22:31:02,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:02,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:02,602 INFO L87 Difference]: Start difference. First operand 3457 states and 9538 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:02,820 INFO L93 Difference]: Finished difference Result 5099 states and 13341 transitions. [2021-10-13 22:31:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:31:02,820 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:02,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:02,828 INFO L225 Difference]: With dead ends: 5099 [2021-10-13 22:31:02,828 INFO L226 Difference]: Without dead ends: 4947 [2021-10-13 22:31:02,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 230.8ms TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:31:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2021-10-13 22:31:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 3582. [2021-10-13 22:31:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 2.7402960067020383) internal successors, (9813), 3581 states have internal predecessors, (9813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 9813 transitions. [2021-10-13 22:31:02,879 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 9813 transitions. Word has length 57 [2021-10-13 22:31:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:02,879 INFO L470 AbstractCegarLoop]: Abstraction has 3582 states and 9813 transitions. [2021-10-13 22:31:02,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:02,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 9813 transitions. [2021-10-13 22:31:02,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:02,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:02,885 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, 1, 1] [2021-10-13 22:31:02,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:03,107 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 22:31:03,107 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash -960534736, now seen corresponding path program 7 times [2021-10-13 22:31:03,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:03,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960051839] [2021-10-13 22:31:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:03,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:03,208 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 22:31:03,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:03,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960051839] [2021-10-13 22:31:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960051839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:03,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225126031] [2021-10-13 22:31:03,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:03,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:03,210 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 22:31:03,245 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 22:31:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:03,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:03,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:04,334 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 22:31:04,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225126031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:04,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:04,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:04,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845885407] [2021-10-13 22:31:04,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:04,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:04,336 INFO L87 Difference]: Start difference. First operand 3582 states and 9813 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:04,545 INFO L93 Difference]: Finished difference Result 4949 states and 13043 transitions. [2021-10-13 22:31:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:31:04,546 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:04,552 INFO L225 Difference]: With dead ends: 4949 [2021-10-13 22:31:04,552 INFO L226 Difference]: Without dead ends: 4797 [2021-10-13 22:31:04,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:31:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2021-10-13 22:31:04,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 3547. [2021-10-13 22:31:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 3546 states have (on average 2.745628877608573) internal successors, (9736), 3546 states have internal predecessors, (9736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 9736 transitions. [2021-10-13 22:31:04,600 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 9736 transitions. Word has length 57 [2021-10-13 22:31:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:04,600 INFO L470 AbstractCegarLoop]: Abstraction has 3547 states and 9736 transitions. [2021-10-13 22:31:04,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 9736 transitions. [2021-10-13 22:31:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:04,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:04,605 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, 1, 1] [2021-10-13 22:31:04,622 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 22:31:04,807 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 22:31:04,807 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:04,808 INFO L82 PathProgramCache]: Analyzing trace with hash 91683170, now seen corresponding path program 8 times [2021-10-13 22:31:04,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:04,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636279487] [2021-10-13 22:31:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:04,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:04,908 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 22:31:04,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:04,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636279487] [2021-10-13 22:31:04,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636279487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:04,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652941919] [2021-10-13 22:31:04,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:04,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:04,911 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 22:31:04,913 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 22:31:05,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:05,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:05,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:05,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:05,953 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 22:31:05,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652941919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:05,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:05,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:05,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050458323] [2021-10-13 22:31:05,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:05,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:05,960 INFO L87 Difference]: Start difference. First operand 3547 states and 9736 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:06,270 INFO L93 Difference]: Finished difference Result 5131 states and 13405 transitions. [2021-10-13 22:31:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:31:06,270 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:06,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:06,279 INFO L225 Difference]: With dead ends: 5131 [2021-10-13 22:31:06,279 INFO L226 Difference]: Without dead ends: 4979 [2021-10-13 22:31:06,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 286.1ms TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:31:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-10-13 22:31:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3652. [2021-10-13 22:31:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 2.7299370035606683) internal successors, (9967), 3651 states have internal predecessors, (9967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 9967 transitions. [2021-10-13 22:31:06,343 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 9967 transitions. Word has length 57 [2021-10-13 22:31:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:06,343 INFO L470 AbstractCegarLoop]: Abstraction has 3652 states and 9967 transitions. [2021-10-13 22:31:06,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 9967 transitions. [2021-10-13 22:31:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:06,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:06,347 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, 1, 1] [2021-10-13 22:31:06,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-13 22:31:06,548 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 22:31:06,549 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:06,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1953651878, now seen corresponding path program 9 times [2021-10-13 22:31:06,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:06,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589296347] [2021-10-13 22:31:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:06,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:06,659 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 22:31:06,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:06,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589296347] [2021-10-13 22:31:06,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589296347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:06,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998565295] [2021-10-13 22:31:06,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:06,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:06,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:06,663 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 22:31:06,664 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 22:31:07,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:31:07,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:07,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:07,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:07,759 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 22:31:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998565295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:07,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:07,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:07,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339052454] [2021-10-13 22:31:07,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:07,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:07,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:07,760 INFO L87 Difference]: Start difference. First operand 3652 states and 9967 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:08,053 INFO L93 Difference]: Finished difference Result 5235 states and 13613 transitions. [2021-10-13 22:31:08,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:31:08,054 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:08,061 INFO L225 Difference]: With dead ends: 5235 [2021-10-13 22:31:08,061 INFO L226 Difference]: Without dead ends: 5083 [2021-10-13 22:31:08,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 304.2ms TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:31:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2021-10-13 22:31:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 3636. [2021-10-13 22:31:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 2.730123796423659) internal successors, (9924), 3635 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 9924 transitions. [2021-10-13 22:31:08,165 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 9924 transitions. Word has length 57 [2021-10-13 22:31:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:08,165 INFO L470 AbstractCegarLoop]: Abstraction has 3636 states and 9924 transitions. [2021-10-13 22:31:08,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 9924 transitions. [2021-10-13 22:31:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:08,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:08,169 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, 1, 1] [2021-10-13 22:31:08,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 22:31:08,370 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 22:31:08,370 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:08,370 INFO L82 PathProgramCache]: Analyzing trace with hash -284017324, now seen corresponding path program 10 times [2021-10-13 22:31:08,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:08,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906283085] [2021-10-13 22:31:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:08,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:08,467 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 22:31:08,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:08,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906283085] [2021-10-13 22:31:08,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906283085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:08,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091671200] [2021-10-13 22:31:08,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:08,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:08,469 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 22:31:08,469 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 22:31:09,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:09,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:09,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:09,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:09,720 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 22:31:09,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091671200] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:09,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:09,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:09,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490314541] [2021-10-13 22:31:09,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:09,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:09,721 INFO L87 Difference]: Start difference. First operand 3636 states and 9924 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:10,037 INFO L93 Difference]: Finished difference Result 5219 states and 13581 transitions. [2021-10-13 22:31:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:31:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:10,045 INFO L225 Difference]: With dead ends: 5219 [2021-10-13 22:31:10,045 INFO L226 Difference]: Without dead ends: 5067 [2021-10-13 22:31:10,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 341.9ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:31:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2021-10-13 22:31:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 3581. [2021-10-13 22:31:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 2.7391061452513967) internal successors, (9806), 3580 states have internal predecessors, (9806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9806 transitions. [2021-10-13 22:31:10,099 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9806 transitions. Word has length 57 [2021-10-13 22:31:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:10,099 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 9806 transitions. [2021-10-13 22:31:10,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9806 transitions. [2021-10-13 22:31:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:10,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:10,103 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:10,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 22:31:10,307 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 22:31:10,307 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:10,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1723791004, now seen corresponding path program 13 times [2021-10-13 22:31:10,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:10,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549684291] [2021-10-13 22:31:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:10,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:10,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:10,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549684291] [2021-10-13 22:31:10,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549684291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:10,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397770704] [2021-10-13 22:31:10,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:10,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:10,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:10,439 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 22:31:10,440 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 22:31:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:11,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:11,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397770704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:11,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:11,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:11,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395853186] [2021-10-13 22:31:11,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:11,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:11,710 INFO L87 Difference]: Start difference. First operand 3581 states and 9806 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:11,899 INFO L93 Difference]: Finished difference Result 5163 states and 13469 transitions. [2021-10-13 22:31:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:31:11,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:11,906 INFO L225 Difference]: With dead ends: 5163 [2021-10-13 22:31:11,906 INFO L226 Difference]: Without dead ends: 5011 [2021-10-13 22:31:11,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 208.8ms TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2021-10-13 22:31:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2021-10-13 22:31:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 3556. [2021-10-13 22:31:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.742897327707454) internal successors, (9751), 3555 states have internal predecessors, (9751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9751 transitions. [2021-10-13 22:31:11,958 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9751 transitions. Word has length 57 [2021-10-13 22:31:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:11,958 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 9751 transitions. [2021-10-13 22:31:11,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9751 transitions. [2021-10-13 22:31:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:11,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:11,963 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:11,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:12,164 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 22:31:12,164 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash 126877688, now seen corresponding path program 14 times [2021-10-13 22:31:12,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:12,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236680012] [2021-10-13 22:31:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:12,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:12,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:12,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236680012] [2021-10-13 22:31:12,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236680012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:12,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473254355] [2021-10-13 22:31:12,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:12,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:12,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:12,285 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 22:31:12,286 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 22:31:13,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:13,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:13,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:13,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:13,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473254355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:13,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:13,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:13,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757120610] [2021-10-13 22:31:13,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:13,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:13,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:13,549 INFO L87 Difference]: Start difference. First operand 3556 states and 9751 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:13,826 INFO L93 Difference]: Finished difference Result 5739 states and 14749 transitions. [2021-10-13 22:31:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:31:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:13,833 INFO L225 Difference]: With dead ends: 5739 [2021-10-13 22:31:13,833 INFO L226 Difference]: Without dead ends: 5347 [2021-10-13 22:31:13,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 276.4ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:31:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2021-10-13 22:31:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 3606. [2021-10-13 22:31:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 2.735367545076283) internal successors, (9861), 3605 states have internal predecessors, (9861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 9861 transitions. [2021-10-13 22:31:13,881 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 9861 transitions. Word has length 57 [2021-10-13 22:31:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:13,881 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 9861 transitions. [2021-10-13 22:31:13,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 9861 transitions. [2021-10-13 22:31:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:13,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:13,886 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, 1, 1] [2021-10-13 22:31:13,904 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 22:31:14,086 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 22:31:14,086 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1734255636, now seen corresponding path program 11 times [2021-10-13 22:31:14,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:14,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681990163] [2021-10-13 22:31:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:14,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:14,180 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 22:31:14,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:14,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681990163] [2021-10-13 22:31:14,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681990163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:14,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938471958] [2021-10-13 22:31:14,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:14,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:14,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:14,182 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 22:31:14,199 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 22:31:15,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:31:15,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:15,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:15,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:15,400 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 22:31:15,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938471958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:15,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:15,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:15,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824828409] [2021-10-13 22:31:15,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:15,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:15,401 INFO L87 Difference]: Start difference. First operand 3606 states and 9861 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:15,680 INFO L93 Difference]: Finished difference Result 5444 states and 14036 transitions. [2021-10-13 22:31:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:31:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:15,687 INFO L225 Difference]: With dead ends: 5444 [2021-10-13 22:31:15,687 INFO L226 Difference]: Without dead ends: 5292 [2021-10-13 22:31:15,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=279, Invalid=777, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:31:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-10-13 22:31:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 3631. [2021-10-13 22:31:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3630 states have (on average 2.73168044077135) internal successors, (9916), 3630 states have internal predecessors, (9916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 9916 transitions. [2021-10-13 22:31:15,739 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 9916 transitions. Word has length 57 [2021-10-13 22:31:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:15,740 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 9916 transitions. [2021-10-13 22:31:15,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 9916 transitions. [2021-10-13 22:31:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:15,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:15,745 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, 1, 1] [2021-10-13 22:31:15,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:15,952 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 22:31:15,952 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1260927418, now seen corresponding path program 12 times [2021-10-13 22:31:15,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:15,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413944879] [2021-10-13 22:31:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:15,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:16,055 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 22:31:16,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:16,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413944879] [2021-10-13 22:31:16,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413944879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:16,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655398519] [2021-10-13 22:31:16,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:16,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:16,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:16,057 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 22:31:16,057 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 22:31:16,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:31:16,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:16,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:16,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:17,311 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 22:31:17,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655398519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:17,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:17,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:17,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411128262] [2021-10-13 22:31:17,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:17,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:17,312 INFO L87 Difference]: Start difference. First operand 3631 states and 9916 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:17,573 INFO L93 Difference]: Finished difference Result 5219 states and 13581 transitions. [2021-10-13 22:31:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:31:17,574 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:17,580 INFO L225 Difference]: With dead ends: 5219 [2021-10-13 22:31:17,581 INFO L226 Difference]: Without dead ends: 5067 [2021-10-13 22:31:17,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 260.4ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:31:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2021-10-13 22:31:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 3556. [2021-10-13 22:31:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.742897327707454) internal successors, (9751), 3555 states have internal predecessors, (9751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9751 transitions. [2021-10-13 22:31:17,652 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9751 transitions. Word has length 57 [2021-10-13 22:31:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:17,652 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 9751 transitions. [2021-10-13 22:31:17,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9751 transitions. [2021-10-13 22:31:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:17,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:17,656 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:17,675 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 22:31:17,856 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 22:31:17,857 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:17,857 INFO L82 PathProgramCache]: Analyzing trace with hash -480984296, now seen corresponding path program 15 times [2021-10-13 22:31:17,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:17,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171965597] [2021-10-13 22:31:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:17,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:17,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:17,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171965597] [2021-10-13 22:31:17,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171965597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:17,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239199193] [2021-10-13 22:31:17,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:17,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:17,959 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 22:31:17,961 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 22:31:18,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:31:18,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:18,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:18,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:19,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239199193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:19,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:19,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:19,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959371080] [2021-10-13 22:31:19,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:19,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:19,243 INFO L87 Difference]: Start difference. First operand 3556 states and 9751 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:19,446 INFO L93 Difference]: Finished difference Result 5248 states and 13654 transitions. [2021-10-13 22:31:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:31:19,446 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:19,453 INFO L225 Difference]: With dead ends: 5248 [2021-10-13 22:31:19,453 INFO L226 Difference]: Without dead ends: 5096 [2021-10-13 22:31:19,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 209.5ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-10-13 22:31:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2021-10-13 22:31:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 3531. [2021-10-13 22:31:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 2.746742209631728) internal successors, (9696), 3530 states have internal predecessors, (9696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 9696 transitions. [2021-10-13 22:31:19,502 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 9696 transitions. Word has length 57 [2021-10-13 22:31:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:19,502 INFO L470 AbstractCegarLoop]: Abstraction has 3531 states and 9696 transitions. [2021-10-13 22:31:19,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 9696 transitions. [2021-10-13 22:31:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:19,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:19,507 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:19,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-13 22:31:19,718 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 22:31:19,718 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:19,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1369684396, now seen corresponding path program 16 times [2021-10-13 22:31:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:19,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359426224] [2021-10-13 22:31:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:19,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:19,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:19,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359426224] [2021-10-13 22:31:19,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359426224] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:19,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487676282] [2021-10-13 22:31:19,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:19,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:19,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:19,831 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 22:31:19,843 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 22:31:20,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:20,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:20,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:20,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:21,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487676282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:21,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:21,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:21,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271916847] [2021-10-13 22:31:21,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:21,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:21,167 INFO L87 Difference]: Start difference. First operand 3531 states and 9696 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:21,476 INFO L93 Difference]: Finished difference Result 5784 states and 14854 transitions. [2021-10-13 22:31:21,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:31:21,477 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:21,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:21,484 INFO L225 Difference]: With dead ends: 5784 [2021-10-13 22:31:21,484 INFO L226 Difference]: Without dead ends: 5392 [2021-10-13 22:31:21,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 296.8ms TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:31:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2021-10-13 22:31:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 3581. [2021-10-13 22:31:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 2.7391061452513967) internal successors, (9806), 3580 states have internal predecessors, (9806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9806 transitions. [2021-10-13 22:31:21,530 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9806 transitions. Word has length 57 [2021-10-13 22:31:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:21,530 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 9806 transitions. [2021-10-13 22:31:21,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9806 transitions. [2021-10-13 22:31:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:21,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:21,533 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:21,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:21,734 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 22:31:21,734 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash -669464348, now seen corresponding path program 17 times [2021-10-13 22:31:21,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:21,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507393098] [2021-10-13 22:31:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:21,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:21,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:21,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507393098] [2021-10-13 22:31:21,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507393098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:21,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350533491] [2021-10-13 22:31:21,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:21,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:21,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:21,839 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 22:31:21,840 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 22:31:22,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:31:22,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:22,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:22,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:23,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350533491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:23,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:23,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:23,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797834703] [2021-10-13 22:31:23,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:23,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:23,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:23,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:23,187 INFO L87 Difference]: Start difference. First operand 3581 states and 9806 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:23,387 INFO L93 Difference]: Finished difference Result 5243 states and 13659 transitions. [2021-10-13 22:31:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:31:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:23,394 INFO L225 Difference]: With dead ends: 5243 [2021-10-13 22:31:23,394 INFO L226 Difference]: Without dead ends: 5091 [2021-10-13 22:31:23,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 207.2ms TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2021-10-13 22:31:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2021-10-13 22:31:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 3581. [2021-10-13 22:31:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 2.7391061452513967) internal successors, (9806), 3580 states have internal predecessors, (9806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9806 transitions. [2021-10-13 22:31:23,455 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9806 transitions. Word has length 57 [2021-10-13 22:31:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:23,455 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 9806 transitions. [2021-10-13 22:31:23,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9806 transitions. [2021-10-13 22:31:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:23,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:23,460 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:23,479 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 22:31:23,662 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 22:31:23,662 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1228455760, now seen corresponding path program 18 times [2021-10-13 22:31:23,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:23,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096641508] [2021-10-13 22:31:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:23,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:23,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:23,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096641508] [2021-10-13 22:31:23,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096641508] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:23,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470953929] [2021-10-13 22:31:23,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:23,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:23,756 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 22:31:23,757 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 22:31:24,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:31:24,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:24,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:31:24,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:25,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470953929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:25,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:25,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:25,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559078760] [2021-10-13 22:31:25,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:25,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:25,194 INFO L87 Difference]: Start difference. First operand 3581 states and 9806 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:25,696 INFO L93 Difference]: Finished difference Result 7002 states and 18661 transitions. [2021-10-13 22:31:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:31:25,697 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:25,713 INFO L225 Difference]: With dead ends: 7002 [2021-10-13 22:31:25,713 INFO L226 Difference]: Without dead ends: 6620 [2021-10-13 22:31:25,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 430.3ms TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:31:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2021-10-13 22:31:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 3581. [2021-10-13 22:31:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 2.7391061452513967) internal successors, (9806), 3580 states have internal predecessors, (9806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 9806 transitions. [2021-10-13 22:31:25,789 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 9806 transitions. Word has length 57 [2021-10-13 22:31:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:25,789 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 9806 transitions. [2021-10-13 22:31:25,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:25,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 9806 transitions. [2021-10-13 22:31:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:25,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:25,794 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:25,813 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 22:31:25,994 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 22:31:25,994 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:25,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:25,995 INFO L82 PathProgramCache]: Analyzing trace with hash -351873896, now seen corresponding path program 19 times [2021-10-13 22:31:25,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:25,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733473015] [2021-10-13 22:31:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:25,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:26,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:26,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733473015] [2021-10-13 22:31:26,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733473015] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:26,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008591984] [2021-10-13 22:31:26,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:26,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:26,118 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 22:31:26,119 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 22:31:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:27,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:27,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:27,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008591984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:27,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:27,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:27,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653270913] [2021-10-13 22:31:27,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:27,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:27,579 INFO L87 Difference]: Start difference. First operand 3581 states and 9806 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:27,943 INFO L93 Difference]: Finished difference Result 6781 states and 17805 transitions. [2021-10-13 22:31:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:31:27,944 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:27,954 INFO L225 Difference]: With dead ends: 6781 [2021-10-13 22:31:27,954 INFO L226 Difference]: Without dead ends: 6389 [2021-10-13 22:31:27,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 343.8ms TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:31:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2021-10-13 22:31:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 4034. [2021-10-13 22:31:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4033 states have (on average 2.779568559385073) internal successors, (11210), 4033 states have internal predecessors, (11210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 11210 transitions. [2021-10-13 22:31:28,023 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 11210 transitions. Word has length 57 [2021-10-13 22:31:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:28,023 INFO L470 AbstractCegarLoop]: Abstraction has 4034 states and 11210 transitions. [2021-10-13 22:31:28,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 11210 transitions. [2021-10-13 22:31:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:28,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:28,028 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:31:28,050 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 22:31:28,237 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 22:31:28,237 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:28,237 INFO L82 PathProgramCache]: Analyzing trace with hash 307698844, now seen corresponding path program 20 times [2021-10-13 22:31:28,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:28,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695965625] [2021-10-13 22:31:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:28,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:28,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:28,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695965625] [2021-10-13 22:31:28,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695965625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:28,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075179554] [2021-10-13 22:31:28,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:28,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:28,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:28,349 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 22:31:28,350 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 22:31:29,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:29,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:29,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:31:29,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075179554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:29,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:29,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:29,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864422561] [2021-10-13 22:31:29,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:29,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:29,888 INFO L87 Difference]: Start difference. First operand 4034 states and 11210 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:30,415 INFO L93 Difference]: Finished difference Result 7975 states and 21523 transitions. [2021-10-13 22:31:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:31:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:30,426 INFO L225 Difference]: With dead ends: 7975 [2021-10-13 22:31:30,426 INFO L226 Difference]: Without dead ends: 7414 [2021-10-13 22:31:30,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 482.5ms TimeCoverageRelationStatistics Valid=503, Invalid=1567, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:31:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2021-10-13 22:31:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 3626. [2021-10-13 22:31:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 2.763034482758621) internal successors, (10016), 3625 states have internal predecessors, (10016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 10016 transitions. [2021-10-13 22:31:30,486 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 10016 transitions. Word has length 57 [2021-10-13 22:31:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:30,486 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 10016 transitions. [2021-10-13 22:31:30,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 10016 transitions. [2021-10-13 22:31:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:30,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:30,490 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, 1, 1] [2021-10-13 22:31:30,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:30,690 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 22:31:30,691 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:30,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1086378274, now seen corresponding path program 13 times [2021-10-13 22:31:30,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:30,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303453969] [2021-10-13 22:31:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:30,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:30,797 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 22:31:30,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:30,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303453969] [2021-10-13 22:31:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303453969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:30,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428856636] [2021-10-13 22:31:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:30,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:30,799 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 22:31:30,828 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 22:31:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:31,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:31,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:32,332 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 22:31:32,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428856636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:32,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:32,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:32,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516029716] [2021-10-13 22:31:32,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:32,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:32,334 INFO L87 Difference]: Start difference. First operand 3626 states and 10016 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:32,722 INFO L93 Difference]: Finished difference Result 6310 states and 16423 transitions. [2021-10-13 22:31:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:31:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:32,732 INFO L225 Difference]: With dead ends: 6310 [2021-10-13 22:31:32,732 INFO L226 Difference]: Without dead ends: 6158 [2021-10-13 22:31:32,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 357.4ms TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:31:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2021-10-13 22:31:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 3991. [2021-10-13 22:31:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3990 states have (on average 2.7897243107769425) internal successors, (11131), 3990 states have internal predecessors, (11131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 11131 transitions. [2021-10-13 22:31:32,792 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 11131 transitions. Word has length 57 [2021-10-13 22:31:32,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:32,792 INFO L470 AbstractCegarLoop]: Abstraction has 3991 states and 11131 transitions. [2021-10-13 22:31:32,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 11131 transitions. [2021-10-13 22:31:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:32,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:32,797 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, 1, 1] [2021-10-13 22:31:32,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-13 22:31:33,002 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 22:31:33,002 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2082535204, now seen corresponding path program 14 times [2021-10-13 22:31:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:33,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238976807] [2021-10-13 22:31:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:33,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:33,098 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 22:31:33,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:33,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238976807] [2021-10-13 22:31:33,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238976807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:33,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438425050] [2021-10-13 22:31:33,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:33,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:33,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:33,100 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 22:31:33,127 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 22:31:34,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:34,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:34,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:34,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:34,657 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 22:31:34,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438425050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:34,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:34,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:34,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138207527] [2021-10-13 22:31:34,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:34,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:34,659 INFO L87 Difference]: Start difference. First operand 3991 states and 11131 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:35,028 INFO L93 Difference]: Finished difference Result 6547 states and 17487 transitions. [2021-10-13 22:31:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:31:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:35,039 INFO L225 Difference]: With dead ends: 6547 [2021-10-13 22:31:35,039 INFO L226 Difference]: Without dead ends: 6395 [2021-10-13 22:31:35,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 335.4ms TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:31:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6395 states. [2021-10-13 22:31:35,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6395 to 4136. [2021-10-13 22:31:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 4135 states have (on average 2.8176541717049575) internal successors, (11651), 4135 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 11651 transitions. [2021-10-13 22:31:35,099 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 11651 transitions. Word has length 57 [2021-10-13 22:31:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:35,099 INFO L470 AbstractCegarLoop]: Abstraction has 4136 states and 11651 transitions. [2021-10-13 22:31:35,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 11651 transitions. [2021-10-13 22:31:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:35,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:35,104 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, 1, 1] [2021-10-13 22:31:35,126 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 22:31:35,315 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 22:31:35,315 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:35,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1552859352, now seen corresponding path program 15 times [2021-10-13 22:31:35,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:35,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113754070] [2021-10-13 22:31:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:35,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:35,413 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 22:31:35,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:35,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113754070] [2021-10-13 22:31:35,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113754070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:35,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972913825] [2021-10-13 22:31:35,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:35,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:35,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:35,415 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 22:31:35,435 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 22:31:36,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:31:36,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:36,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:36,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:36,951 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 22:31:36,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972913825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:36,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:36,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:36,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86951308] [2021-10-13 22:31:36,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:36,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:36,952 INFO L87 Difference]: Start difference. First operand 4136 states and 11651 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:37,641 INFO L93 Difference]: Finished difference Result 8007 states and 21706 transitions. [2021-10-13 22:31:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:31:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:37,651 INFO L225 Difference]: With dead ends: 8007 [2021-10-13 22:31:37,652 INFO L226 Difference]: Without dead ends: 7625 [2021-10-13 22:31:37,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 576.7ms TimeCoverageRelationStatistics Valid=583, Invalid=1867, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:31:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2021-10-13 22:31:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 3716. [2021-10-13 22:31:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3716 states, 3715 states have (on average 2.7736204576043066) internal successors, (10304), 3715 states have internal predecessors, (10304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 10304 transitions. [2021-10-13 22:31:37,712 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 10304 transitions. Word has length 57 [2021-10-13 22:31:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:37,712 INFO L470 AbstractCegarLoop]: Abstraction has 3716 states and 10304 transitions. [2021-10-13 22:31:37,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 10304 transitions. [2021-10-13 22:31:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:37,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:37,716 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, 1, 1] [2021-10-13 22:31:37,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-13 22:31:37,916 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 22:31:37,916 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:37,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1882805754, now seen corresponding path program 16 times [2021-10-13 22:31:37,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:37,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850847267] [2021-10-13 22:31:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:37,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:38,030 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 22:31:38,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:38,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850847267] [2021-10-13 22:31:38,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850847267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:38,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186268345] [2021-10-13 22:31:38,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:38,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:38,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:38,032 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 22:31:38,054 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 22:31:39,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:39,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:39,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:39,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:39,608 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 22:31:39,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186268345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:39,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:39,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:39,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380696108] [2021-10-13 22:31:39,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:39,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:39,609 INFO L87 Difference]: Start difference. First operand 3716 states and 10304 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:40,070 INFO L93 Difference]: Finished difference Result 6372 states and 16469 transitions. [2021-10-13 22:31:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:31:40,070 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:40,081 INFO L225 Difference]: With dead ends: 6372 [2021-10-13 22:31:40,082 INFO L226 Difference]: Without dead ends: 6220 [2021-10-13 22:31:40,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 378.7ms TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:31:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2021-10-13 22:31:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 3956. [2021-10-13 22:31:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3955 states have (on average 2.784323640960809) internal successors, (11012), 3955 states have internal predecessors, (11012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 11012 transitions. [2021-10-13 22:31:40,156 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 11012 transitions. Word has length 57 [2021-10-13 22:31:40,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:40,156 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 11012 transitions. [2021-10-13 22:31:40,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 11012 transitions. [2021-10-13 22:31:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:40,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:40,161 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, 1, 1] [2021-10-13 22:31:40,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:40,375 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 22:31:40,375 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash -162529294, now seen corresponding path program 17 times [2021-10-13 22:31:40,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:40,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486734451] [2021-10-13 22:31:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:40,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:40,477 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 22:31:40,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486734451] [2021-10-13 22:31:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486734451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997247320] [2021-10-13 22:31:40,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:40,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:40,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:40,479 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 22:31:40,497 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 22:31:41,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:31:41,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:41,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:41,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:42,084 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 22:31:42,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997247320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:42,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:42,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:42,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574706699] [2021-10-13 22:31:42,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:42,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:42,085 INFO L87 Difference]: Start difference. First operand 3956 states and 11012 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:42,465 INFO L93 Difference]: Finished difference Result 6372 states and 16469 transitions. [2021-10-13 22:31:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:31:42,466 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:42,474 INFO L225 Difference]: With dead ends: 6372 [2021-10-13 22:31:42,475 INFO L226 Difference]: Without dead ends: 6220 [2021-10-13 22:31:42,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 356.1ms TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:31:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2021-10-13 22:31:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 4019. [2021-10-13 22:31:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 4018 states have (on average 2.781732205077153) internal successors, (11177), 4018 states have internal predecessors, (11177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 11177 transitions. [2021-10-13 22:31:42,560 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 11177 transitions. Word has length 57 [2021-10-13 22:31:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:42,560 INFO L470 AbstractCegarLoop]: Abstraction has 4019 states and 11177 transitions. [2021-10-13 22:31:42,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 11177 transitions. [2021-10-13 22:31:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:42,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:42,564 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, 1, 1] [2021-10-13 22:31:42,584 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 22:31:42,764 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 22:31:42,764 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:42,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1507105260, now seen corresponding path program 18 times [2021-10-13 22:31:42,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:42,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342165107] [2021-10-13 22:31:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:42,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:42,864 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 22:31:42,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:42,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342165107] [2021-10-13 22:31:42,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342165107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:42,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192482197] [2021-10-13 22:31:42,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:42,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:42,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:42,866 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 22:31:42,880 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 22:31:44,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:31:44,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:44,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:44,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:44,551 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 22:31:44,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192482197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:44,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:44,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:44,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214130204] [2021-10-13 22:31:44,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:44,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:44,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:44,552 INFO L87 Difference]: Start difference. First operand 4019 states and 11177 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:44,987 INFO L93 Difference]: Finished difference Result 6497 states and 16744 transitions. [2021-10-13 22:31:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:31:44,988 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:44,998 INFO L225 Difference]: With dead ends: 6497 [2021-10-13 22:31:44,998 INFO L226 Difference]: Without dead ends: 6345 [2021-10-13 22:31:44,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 399.7ms TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:31:45,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6345 states. [2021-10-13 22:31:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6345 to 3964. [2021-10-13 22:31:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3964 states, 3963 states have (on average 2.7905627050214483) internal successors, (11059), 3963 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 11059 transitions. [2021-10-13 22:31:45,087 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 11059 transitions. Word has length 57 [2021-10-13 22:31:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:45,087 INFO L470 AbstractCegarLoop]: Abstraction has 3964 states and 11059 transitions. [2021-10-13 22:31:45,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 11059 transitions. [2021-10-13 22:31:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:45,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:45,093 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, 1, 1] [2021-10-13 22:31:45,117 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 22:31:45,307 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 22:31:45,307 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:45,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1039088686, now seen corresponding path program 19 times [2021-10-13 22:31:45,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:45,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680330329] [2021-10-13 22:31:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:45,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:45,416 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 22:31:45,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:45,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680330329] [2021-10-13 22:31:45,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680330329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:45,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134856148] [2021-10-13 22:31:45,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:31:45,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:45,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:45,418 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 22:31:45,419 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 22:31:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:46,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:46,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:47,081 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 22:31:47,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134856148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:47,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:47,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:47,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643768353] [2021-10-13 22:31:47,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:47,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:47,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:47,083 INFO L87 Difference]: Start difference. First operand 3964 states and 11059 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:47,553 INFO L93 Difference]: Finished difference Result 6496 states and 17055 transitions. [2021-10-13 22:31:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:31:47,553 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:47,561 INFO L225 Difference]: With dead ends: 6496 [2021-10-13 22:31:47,561 INFO L226 Difference]: Without dead ends: 6344 [2021-10-13 22:31:47,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 426.5ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:31:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2021-10-13 22:31:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 4084. [2021-10-13 22:31:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 4083 states have (on average 2.8062698995836395) internal successors, (11458), 4083 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 11458 transitions. [2021-10-13 22:31:47,616 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 11458 transitions. Word has length 57 [2021-10-13 22:31:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:47,616 INFO L470 AbstractCegarLoop]: Abstraction has 4084 states and 11458 transitions. [2021-10-13 22:31:47,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 11458 transitions. [2021-10-13 22:31:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:47,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:47,620 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, 1, 1] [2021-10-13 22:31:47,639 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 22:31:47,820 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 22:31:47,820 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:47,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2129824792, now seen corresponding path program 20 times [2021-10-13 22:31:47,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:47,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707358624] [2021-10-13 22:31:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:47,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:47,920 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 22:31:47,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:47,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707358624] [2021-10-13 22:31:47,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707358624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:47,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100785569] [2021-10-13 22:31:47,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:31:47,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:47,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:47,922 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 22:31:47,923 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 22:31:49,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:31:49,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:49,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:49,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:49,621 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 22:31:49,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100785569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:49,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:49,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:49,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130173737] [2021-10-13 22:31:49,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:49,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:49,623 INFO L87 Difference]: Start difference. First operand 4084 states and 11458 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:50,110 INFO L93 Difference]: Finished difference Result 6839 states and 18374 transitions. [2021-10-13 22:31:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:31:50,110 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:50,120 INFO L225 Difference]: With dead ends: 6839 [2021-10-13 22:31:50,120 INFO L226 Difference]: Without dead ends: 6687 [2021-10-13 22:31:50,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 431.0ms TimeCoverageRelationStatistics Valid=410, Invalid=1312, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:31:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2021-10-13 22:31:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 4204. [2021-10-13 22:31:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4204 states, 4203 states have (on average 2.815369973828218) internal successors, (11833), 4203 states have internal predecessors, (11833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 11833 transitions. [2021-10-13 22:31:50,186 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 11833 transitions. Word has length 57 [2021-10-13 22:31:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:50,186 INFO L470 AbstractCegarLoop]: Abstraction has 4204 states and 11833 transitions. [2021-10-13 22:31:50,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 11833 transitions. [2021-10-13 22:31:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:50,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:50,192 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, 1, 1] [2021-10-13 22:31:50,219 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 22:31:50,419 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 22:31:50,419 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:50,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:50,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1505569764, now seen corresponding path program 21 times [2021-10-13 22:31:50,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:50,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429691165] [2021-10-13 22:31:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:50,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:50,509 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 22:31:50,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:50,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429691165] [2021-10-13 22:31:50,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429691165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:50,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707098493] [2021-10-13 22:31:50,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:31:50,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:50,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:50,510 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 22:31:50,511 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 22:31:51,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:31:51,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:51,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:51,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:52,306 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 22:31:52,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707098493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:52,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:52,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:31:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339194962] [2021-10-13 22:31:52,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:31:52,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:31:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:31:52,307 INFO L87 Difference]: Start difference. First operand 4204 states and 11833 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:53,001 INFO L93 Difference]: Finished difference Result 8595 states and 23478 transitions. [2021-10-13 22:31:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:31:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:31:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:53,014 INFO L225 Difference]: With dead ends: 8595 [2021-10-13 22:31:53,014 INFO L226 Difference]: Without dead ends: 8165 [2021-10-13 22:31:53,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 632.7ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 22:31:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2021-10-13 22:31:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 4231. [2021-10-13 22:31:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4231 states, 4230 states have (on average 2.798108747044917) internal successors, (11836), 4230 states have internal predecessors, (11836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4231 states to 4231 states and 11836 transitions. [2021-10-13 22:31:53,081 INFO L78 Accepts]: Start accepts. Automaton has 4231 states and 11836 transitions. Word has length 57 [2021-10-13 22:31:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:53,081 INFO L470 AbstractCegarLoop]: Abstraction has 4231 states and 11836 transitions. [2021-10-13 22:31:53,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4231 states and 11836 transitions. [2021-10-13 22:31:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:53,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:53,085 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, 1, 1] [2021-10-13 22:31:53,106 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 22:31:53,285 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 22:31:53,286 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -557943956, now seen corresponding path program 22 times [2021-10-13 22:31:53,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:53,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453010027] [2021-10-13 22:31:53,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:53,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:53,384 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 22:31:53,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:53,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453010027] [2021-10-13 22:31:53,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453010027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:53,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044857106] [2021-10-13 22:31:53,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:31:53,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:53,386 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 22:31:53,386 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 22:31:54,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:31:54,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:54,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:54,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:55,114 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 22:31:55,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044857106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:55,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:55,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:55,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969399032] [2021-10-13 22:31:55,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:55,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:55,115 INFO L87 Difference]: Start difference. First operand 4231 states and 11836 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:55,607 INFO L93 Difference]: Finished difference Result 6651 states and 17482 transitions. [2021-10-13 22:31:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:31:55,607 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:55,616 INFO L225 Difference]: With dead ends: 6651 [2021-10-13 22:31:55,616 INFO L226 Difference]: Without dead ends: 6499 [2021-10-13 22:31:55,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 437.4ms TimeCoverageRelationStatistics Valid=396, Invalid=1326, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:31:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2021-10-13 22:31:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 4346. [2021-10-13 22:31:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4345 states have (on average 2.807825086306099) internal successors, (12200), 4345 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 12200 transitions. [2021-10-13 22:31:55,703 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 12200 transitions. Word has length 57 [2021-10-13 22:31:55,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:55,703 INFO L470 AbstractCegarLoop]: Abstraction has 4346 states and 12200 transitions. [2021-10-13 22:31:55,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 12200 transitions. [2021-10-13 22:31:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:55,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:55,708 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, 1, 1] [2021-10-13 22:31:55,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 22:31:55,908 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 22:31:55,908 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1146019552, now seen corresponding path program 23 times [2021-10-13 22:31:55,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:55,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727114451] [2021-10-13 22:31:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:55,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:56,000 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 22:31:56,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:56,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727114451] [2021-10-13 22:31:56,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727114451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:56,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315472891] [2021-10-13 22:31:56,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:31:56,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:56,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:56,001 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 22:31:56,002 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 22:31:57,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:31:57,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:31:57,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:31:57,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:31:57,740 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 22:31:57,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315472891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:57,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:31:57,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:31:57,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355513488] [2021-10-13 22:31:57,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:31:57,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:31:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:31:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:31:57,742 INFO L87 Difference]: Start difference. First operand 4346 states and 12200 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:31:58,306 INFO L93 Difference]: Finished difference Result 7149 states and 19363 transitions. [2021-10-13 22:31:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:31:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:31:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:31:58,320 INFO L225 Difference]: With dead ends: 7149 [2021-10-13 22:31:58,320 INFO L226 Difference]: Without dead ends: 6997 [2021-10-13 22:31:58,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 492.6ms TimeCoverageRelationStatistics Valid=532, Invalid=1724, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:31:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2021-10-13 22:31:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 4541. [2021-10-13 22:31:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4540 states have (on average 2.8259911894273126) internal successors, (12830), 4540 states have internal predecessors, (12830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:31:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 12830 transitions. [2021-10-13 22:31:58,396 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 12830 transitions. Word has length 57 [2021-10-13 22:31:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:31:58,396 INFO L470 AbstractCegarLoop]: Abstraction has 4541 states and 12830 transitions. [2021-10-13 22:31:58,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:31:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 12830 transitions. [2021-10-13 22:31:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:31:58,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:31:58,400 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, 1, 1] [2021-10-13 22:31:58,420 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 22:31:58,601 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 22:31:58,601 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:31:58,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:31:58,602 INFO L82 PathProgramCache]: Analyzing trace with hash -486446812, now seen corresponding path program 24 times [2021-10-13 22:31:58,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:31:58,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452949478] [2021-10-13 22:31:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:31:58,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:31:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:31:58,789 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 22:31:58,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:31:58,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452949478] [2021-10-13 22:31:58,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452949478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:31:58,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190204603] [2021-10-13 22:31:58,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:31:58,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:31:58,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:31:58,790 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 22:31:58,793 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 22:32:00,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:32:00,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:00,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:00,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:00,553 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 22:32:00,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190204603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:00,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:00,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:32:00,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587018767] [2021-10-13 22:32:00,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:32:00,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:00,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:32:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:32:00,555 INFO L87 Difference]: Start difference. First operand 4541 states and 12830 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:01,267 INFO L93 Difference]: Finished difference Result 8451 states and 23244 transitions. [2021-10-13 22:32:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:32:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:32:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:01,281 INFO L225 Difference]: With dead ends: 8451 [2021-10-13 22:32:01,281 INFO L226 Difference]: Without dead ends: 8069 [2021-10-13 22:32:01,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 629.4ms TimeCoverageRelationStatistics Valid=771, Invalid=2535, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 22:32:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8069 states. [2021-10-13 22:32:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8069 to 4133. [2021-10-13 22:32:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4133 states, 4132 states have (on average 2.7942884801548886) internal successors, (11546), 4132 states have internal predecessors, (11546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 11546 transitions. [2021-10-13 22:32:01,357 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 11546 transitions. Word has length 57 [2021-10-13 22:32:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:01,357 INFO L470 AbstractCegarLoop]: Abstraction has 4133 states and 11546 transitions. [2021-10-13 22:32:01,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 11546 transitions. [2021-10-13 22:32:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:32:01,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:01,361 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, 1, 1] [2021-10-13 22:32:01,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:01,562 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 22:32:01,562 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:01,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:01,562 INFO L82 PathProgramCache]: Analyzing trace with hash -926955930, now seen corresponding path program 25 times [2021-10-13 22:32:01,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:01,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954455428] [2021-10-13 22:32:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:01,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:01,654 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 22:32:01,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:01,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954455428] [2021-10-13 22:32:01,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954455428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:01,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340905964] [2021-10-13 22:32:01,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:01,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:01,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:01,655 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 22:32:01,656 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 22:32:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:03,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:03,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:03,483 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 22:32:03,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340905964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:03,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:03,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 22:32:03,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60653651] [2021-10-13 22:32:03,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 22:32:03,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:03,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 22:32:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-13 22:32:03,485 INFO L87 Difference]: Start difference. First operand 4133 states and 11546 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:32:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:04,022 INFO L93 Difference]: Finished difference Result 7362 states and 19861 transitions. [2021-10-13 22:32:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:32:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 57 [2021-10-13 22:32:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:04,035 INFO L225 Difference]: With dead ends: 7362 [2021-10-13 22:32:04,035 INFO L226 Difference]: Without dead ends: 7210 [2021-10-13 22:32:04,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 486.9ms TimeCoverageRelationStatistics Valid=498, Invalid=1572, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:32:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7210 states. [2021-10-13 22:32:04,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7210 to 4238. [2021-10-13 22:32:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 4237 states have (on average 2.8064668397451027) internal successors, (11891), 4237 states have internal predecessors, (11891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 11891 transitions. [2021-10-13 22:32:04,095 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 11891 transitions. Word has length 57 [2021-10-13 22:32:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:04,095 INFO L470 AbstractCegarLoop]: Abstraction has 4238 states and 11891 transitions. [2021-10-13 22:32:04,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 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 22:32:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 11891 transitions. [2021-10-13 22:32:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 22:32:04,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:04,099 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, 1, 1] [2021-10-13 22:32:04,120 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 22:32:04,299 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 22:32:04,300 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:04,300 INFO L82 PathProgramCache]: Analyzing trace with hash -267383190, now seen corresponding path program 26 times [2021-10-13 22:32:04,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:04,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10285736] [2021-10-13 22:32:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:04,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:04,412 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 22:32:04,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:04,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10285736] [2021-10-13 22:32:04,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10285736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:04,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894587782] [2021-10-13 22:32:04,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:04,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:04,414 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 22:32:04,415 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 22:32:05,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:05,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:05,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:32:05,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:06,374 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 22:32:06,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894587782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:06,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:06,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 22:32:06,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214889430] [2021-10-13 22:32:06,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 22:32:06,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 22:32:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-13 22:32:06,376 INFO L87 Difference]: Start difference. First operand 4238 states and 11891 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:07,208 INFO L93 Difference]: Finished difference Result 8874 states and 24382 transitions. [2021-10-13 22:32:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:32:07,208 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 22:32:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:07,222 INFO L225 Difference]: With dead ends: 8874 [2021-10-13 22:32:07,222 INFO L226 Difference]: Without dead ends: 8492 [2021-10-13 22:32:07,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 749.7ms TimeCoverageRelationStatistics Valid=738, Invalid=2342, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:32:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-10-13 22:32:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 4043. [2021-10-13 22:32:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 4042 states have (on average 2.7859970311726867) internal successors, (11261), 4042 states have internal predecessors, (11261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 11261 transitions. [2021-10-13 22:32:07,294 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 11261 transitions. Word has length 57 [2021-10-13 22:32:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:07,294 INFO L470 AbstractCegarLoop]: Abstraction has 4043 states and 11261 transitions. [2021-10-13 22:32:07,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 11261 transitions. [2021-10-13 22:32:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:07,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:07,298 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:32:07,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 22:32:07,498 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 22:32:07,499 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:07,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1586954621, now seen corresponding path program 21 times [2021-10-13 22:32:07,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:07,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31070377] [2021-10-13 22:32:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:07,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:07,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:07,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31070377] [2021-10-13 22:32:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31070377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:07,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144655844] [2021-10-13 22:32:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:07,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:07,616 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 22:32:07,644 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 22:32:09,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:32:09,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:09,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:09,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:09,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144655844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:09,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:09,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:09,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86344519] [2021-10-13 22:32:09,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:09,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:09,704 INFO L87 Difference]: Start difference. First operand 4043 states and 11261 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:10,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:10,003 INFO L93 Difference]: Finished difference Result 5883 states and 15491 transitions. [2021-10-13 22:32:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:32:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:10,013 INFO L225 Difference]: With dead ends: 5883 [2021-10-13 22:32:10,013 INFO L226 Difference]: Without dead ends: 5731 [2021-10-13 22:32:10,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 300.1ms TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2021-10-13 22:32:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5731 states. [2021-10-13 22:32:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5731 to 4118. [2021-10-13 22:32:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4117 states have (on average 2.7753218362885597) internal successors, (11426), 4117 states have internal predecessors, (11426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 11426 transitions. [2021-10-13 22:32:10,063 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 11426 transitions. Word has length 62 [2021-10-13 22:32:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:10,063 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 11426 transitions. [2021-10-13 22:32:10,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 11426 transitions. [2021-10-13 22:32:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:10,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:10,067 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:10,089 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 22:32:10,268 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 22:32:10,268 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:10,268 INFO L82 PathProgramCache]: Analyzing trace with hash 846879351, now seen corresponding path program 27 times [2021-10-13 22:32:10,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:10,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880141385] [2021-10-13 22:32:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:10,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:10,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:10,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880141385] [2021-10-13 22:32:10,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880141385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:10,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883978785] [2021-10-13 22:32:10,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:10,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:10,408 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 22:32:10,409 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 22:32:12,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:12,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:12,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:12,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883978785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:12,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:12,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:12,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966466138] [2021-10-13 22:32:12,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:12,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:12,732 INFO L87 Difference]: Start difference. First operand 4118 states and 11426 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:12,981 INFO L93 Difference]: Finished difference Result 6003 states and 15731 transitions. [2021-10-13 22:32:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:12,981 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:12,989 INFO L225 Difference]: With dead ends: 6003 [2021-10-13 22:32:12,989 INFO L226 Difference]: Without dead ends: 5851 [2021-10-13 22:32:12,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 297.1ms TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2021-10-13 22:32:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 4208. [2021-10-13 22:32:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4208 states, 4207 states have (on average 2.7623009270263847) internal successors, (11621), 4207 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4208 states to 4208 states and 11621 transitions. [2021-10-13 22:32:13,045 INFO L78 Accepts]: Start accepts. Automaton has 4208 states and 11621 transitions. Word has length 62 [2021-10-13 22:32:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:13,046 INFO L470 AbstractCegarLoop]: Abstraction has 4208 states and 11621 transitions. [2021-10-13 22:32:13,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4208 states and 11621 transitions. [2021-10-13 22:32:13,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:13,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:13,050 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:13,072 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 22:32:13,250 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 22:32:13,251 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:13,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1320207569, now seen corresponding path program 28 times [2021-10-13 22:32:13,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:13,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111416070] [2021-10-13 22:32:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:13,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:13,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:13,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111416070] [2021-10-13 22:32:13,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111416070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:13,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569130076] [2021-10-13 22:32:13,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:13,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:13,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:13,394 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 22:32:13,422 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 22:32:15,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:15,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:15,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:15,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:15,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569130076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:15,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:15,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:15,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673405185] [2021-10-13 22:32:15,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:15,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:15,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:15,480 INFO L87 Difference]: Start difference. First operand 4208 states and 11621 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:15,725 INFO L93 Difference]: Finished difference Result 5988 states and 15706 transitions. [2021-10-13 22:32:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 22:32:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:15,733 INFO L225 Difference]: With dead ends: 5988 [2021-10-13 22:32:15,733 INFO L226 Difference]: Without dead ends: 5836 [2021-10-13 22:32:15,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 278.3ms TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-10-13 22:32:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 4173. [2021-10-13 22:32:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4173 states, 4172 states have (on average 2.766299137104506) internal successors, (11541), 4172 states have internal predecessors, (11541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 11541 transitions. [2021-10-13 22:32:15,786 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 11541 transitions. Word has length 62 [2021-10-13 22:32:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:15,786 INFO L470 AbstractCegarLoop]: Abstraction has 4173 states and 11541 transitions. [2021-10-13 22:32:15,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 11541 transitions. [2021-10-13 22:32:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:15,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:15,790 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:15,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-13 22:32:15,990 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 22:32:15,990 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:15,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1922541821, now seen corresponding path program 29 times [2021-10-13 22:32:15,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:15,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657206561] [2021-10-13 22:32:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:15,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:16,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:16,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657206561] [2021-10-13 22:32:16,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657206561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:16,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698291450] [2021-10-13 22:32:16,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:16,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:16,097 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 22:32:16,098 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 22:32:17,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 22:32:17,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:17,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:17,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:18,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698291450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:18,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:18,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413293183] [2021-10-13 22:32:18,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:18,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:18,241 INFO L87 Difference]: Start difference. First operand 4173 states and 11541 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:18,538 INFO L93 Difference]: Finished difference Result 6027 states and 15779 transitions. [2021-10-13 22:32:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:32:18,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:18,547 INFO L225 Difference]: With dead ends: 6027 [2021-10-13 22:32:18,547 INFO L226 Difference]: Without dead ends: 5875 [2021-10-13 22:32:18,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 302.1ms TimeCoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:32:18,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2021-10-13 22:32:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 4223. [2021-10-13 22:32:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 4222 states have (on average 2.759592610137376) internal successors, (11651), 4222 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 11651 transitions. [2021-10-13 22:32:18,606 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 11651 transitions. Word has length 62 [2021-10-13 22:32:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:18,607 INFO L470 AbstractCegarLoop]: Abstraction has 4223 states and 11651 transitions. [2021-10-13 22:32:18,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 11651 transitions. [2021-10-13 22:32:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:18,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:18,611 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:18,633 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 22:32:18,812 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 22:32:18,812 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash 327090427, now seen corresponding path program 30 times [2021-10-13 22:32:18,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:18,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980870652] [2021-10-13 22:32:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:18,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:18,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:18,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980870652] [2021-10-13 22:32:18,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980870652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:18,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802104728] [2021-10-13 22:32:18,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:18,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:18,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:18,933 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 22:32:18,954 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 22:32:20,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:20,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:21,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802104728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:21,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97700604] [2021-10-13 22:32:21,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:21,090 INFO L87 Difference]: Start difference. First operand 4223 states and 11651 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:21,435 INFO L93 Difference]: Finished difference Result 6108 states and 15946 transitions. [2021-10-13 22:32:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:21,444 INFO L225 Difference]: With dead ends: 6108 [2021-10-13 22:32:21,444 INFO L226 Difference]: Without dead ends: 5956 [2021-10-13 22:32:21,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 338.2ms TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5956 states. [2021-10-13 22:32:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5956 to 4263. [2021-10-13 22:32:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.7536367902393244) internal successors, (11736), 4262 states have internal predecessors, (11736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 11736 transitions. [2021-10-13 22:32:21,495 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 11736 transitions. Word has length 62 [2021-10-13 22:32:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:21,496 INFO L470 AbstractCegarLoop]: Abstraction has 4263 states and 11736 transitions. [2021-10-13 22:32:21,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 11736 transitions. [2021-10-13 22:32:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:21,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:21,500 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:21,521 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 22:32:21,700 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 22:32:21,700 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1996724981, now seen corresponding path program 31 times [2021-10-13 22:32:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:21,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283016735] [2021-10-13 22:32:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:21,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:21,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:21,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283016735] [2021-10-13 22:32:21,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283016735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:21,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706095814] [2021-10-13 22:32:21,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:21,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:21,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:21,819 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 22:32:21,842 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 22:32:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:23,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:23,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:24,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706095814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:24,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:24,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:24,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213080707] [2021-10-13 22:32:24,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:24,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:24,142 INFO L87 Difference]: Start difference. First operand 4263 states and 11736 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:24,485 INFO L93 Difference]: Finished difference Result 6243 states and 16307 transitions. [2021-10-13 22:32:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:32:24,486 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:24,495 INFO L225 Difference]: With dead ends: 6243 [2021-10-13 22:32:24,496 INFO L226 Difference]: Without dead ends: 5939 [2021-10-13 22:32:24,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 359.3ms TimeCoverageRelationStatistics Valid=331, Invalid=1001, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:32:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2021-10-13 22:32:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 4263. [2021-10-13 22:32:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.7531675269826374) internal successors, (11734), 4262 states have internal predecessors, (11734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 11734 transitions. [2021-10-13 22:32:24,592 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 11734 transitions. Word has length 62 [2021-10-13 22:32:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:24,593 INFO L470 AbstractCegarLoop]: Abstraction has 4263 states and 11734 transitions. [2021-10-13 22:32:24,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 11734 transitions. [2021-10-13 22:32:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:24,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:24,597 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:24,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-13 22:32:24,797 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 22:32:24,797 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:24,798 INFO L82 PathProgramCache]: Analyzing trace with hash -222408201, now seen corresponding path program 32 times [2021-10-13 22:32:24,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:24,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675825902] [2021-10-13 22:32:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:24,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:24,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:24,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675825902] [2021-10-13 22:32:24,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675825902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:24,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134593737] [2021-10-13 22:32:24,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:24,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:24,906 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 22:32:24,909 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 22:32:26,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:26,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:26,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:26,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134593737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:27,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:27,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120682799] [2021-10-13 22:32:27,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:27,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:27,121 INFO L87 Difference]: Start difference. First operand 4263 states and 11734 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:27,424 INFO L93 Difference]: Finished difference Result 6125 states and 15985 transitions. [2021-10-13 22:32:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:27,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:27,432 INFO L225 Difference]: With dead ends: 6125 [2021-10-13 22:32:27,433 INFO L226 Difference]: Without dead ends: 5973 [2021-10-13 22:32:27,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 324.2ms TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:32:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2021-10-13 22:32:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 4358. [2021-10-13 22:32:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 2.741106265779206) internal successors, (11943), 4357 states have internal predecessors, (11943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 11943 transitions. [2021-10-13 22:32:27,484 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 11943 transitions. Word has length 62 [2021-10-13 22:32:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:27,485 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 11943 transitions. [2021-10-13 22:32:27,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 11943 transitions. [2021-10-13 22:32:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:27,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:27,489 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:27,510 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 22:32:27,689 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 22:32:27,689 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2027224047, now seen corresponding path program 33 times [2021-10-13 22:32:27,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:27,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66582421] [2021-10-13 22:32:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:27,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:27,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66582421] [2021-10-13 22:32:27,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66582421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874156448] [2021-10-13 22:32:27,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:27,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:27,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:27,857 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 22:32:27,866 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 22:32:29,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:29,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:29,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:29,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874156448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:30,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:30,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203300063] [2021-10-13 22:32:30,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:30,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:30,203 INFO L87 Difference]: Start difference. First operand 4358 states and 11943 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:30,543 INFO L93 Difference]: Finished difference Result 6343 states and 16423 transitions. [2021-10-13 22:32:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:32:30,543 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:30,552 INFO L225 Difference]: With dead ends: 6343 [2021-10-13 22:32:30,552 INFO L226 Difference]: Without dead ends: 6191 [2021-10-13 22:32:30,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 379.5ms TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2021-10-13 22:32:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 4428. [2021-10-13 22:32:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 2.731872599954823) internal successors, (12094), 4427 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 12094 transitions. [2021-10-13 22:32:30,606 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 12094 transitions. Word has length 62 [2021-10-13 22:32:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:30,607 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 12094 transitions. [2021-10-13 22:32:30,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 12094 transitions. [2021-10-13 22:32:30,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:30,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:30,611 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:30,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-13 22:32:30,812 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 22:32:30,812 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash -598108695, now seen corresponding path program 34 times [2021-10-13 22:32:30,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:30,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418269124] [2021-10-13 22:32:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:30,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:30,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:30,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418269124] [2021-10-13 22:32:30,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418269124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:30,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102371839] [2021-10-13 22:32:30,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:30,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:30,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:30,966 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 22:32:30,966 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 22:32:32,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:32,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:32,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:32,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:33,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102371839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:33,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:33,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:33,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043161230] [2021-10-13 22:32:33,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:33,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:33,279 INFO L87 Difference]: Start difference. First operand 4428 states and 12094 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:33,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:33,629 INFO L93 Difference]: Finished difference Result 6383 states and 16511 transitions. [2021-10-13 22:32:33,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:32:33,629 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:33,637 INFO L225 Difference]: With dead ends: 6383 [2021-10-13 22:32:33,637 INFO L226 Difference]: Without dead ends: 6231 [2021-10-13 22:32:33,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 398.6ms TimeCoverageRelationStatistics Valid=388, Invalid=1094, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:32:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2021-10-13 22:32:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 4403. [2021-10-13 22:32:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 2.7355747387551115) internal successors, (12042), 4402 states have internal predecessors, (12042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 12042 transitions. [2021-10-13 22:32:33,691 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 12042 transitions. Word has length 62 [2021-10-13 22:32:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:33,692 INFO L470 AbstractCegarLoop]: Abstraction has 4403 states and 12042 transitions. [2021-10-13 22:32:33,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 12042 transitions. [2021-10-13 22:32:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:33,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:33,696 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:32:33,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:33,896 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 22:32:33,896 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash -187277073, now seen corresponding path program 22 times [2021-10-13 22:32:33,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:33,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462824783] [2021-10-13 22:32:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:33,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:34,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:34,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462824783] [2021-10-13 22:32:34,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462824783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:34,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845574489] [2021-10-13 22:32:34,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:34,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:34,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:34,006 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 22:32:34,007 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 22:32:35,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:35,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:35,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:35,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:36,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845574489] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:36,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:36,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:36,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295613353] [2021-10-13 22:32:36,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:36,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:36,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:36,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:36,410 INFO L87 Difference]: Start difference. First operand 4403 states and 12042 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:36,796 INFO L93 Difference]: Finished difference Result 6255 states and 16319 transitions. [2021-10-13 22:32:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:32:36,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:36,805 INFO L225 Difference]: With dead ends: 6255 [2021-10-13 22:32:36,805 INFO L226 Difference]: Without dead ends: 5951 [2021-10-13 22:32:36,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 377.8ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:32:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2021-10-13 22:32:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 4322. [2021-10-13 22:32:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4321 states have (on average 2.7433464475815783) internal successors, (11854), 4321 states have internal predecessors, (11854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 11854 transitions. [2021-10-13 22:32:36,873 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 11854 transitions. Word has length 62 [2021-10-13 22:32:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 4322 states and 11854 transitions. [2021-10-13 22:32:36,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 11854 transitions. [2021-10-13 22:32:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:36,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:36,882 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:36,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:37,099 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 22:32:37,099 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:37,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1408613833, now seen corresponding path program 35 times [2021-10-13 22:32:37,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:37,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106685037] [2021-10-13 22:32:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:37,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:37,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:37,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106685037] [2021-10-13 22:32:37,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106685037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:37,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288264235] [2021-10-13 22:32:37,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:37,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:37,253 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 22:32:37,253 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 22:32:39,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:32:39,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:39,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:39,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:39,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288264235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:39,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:39,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:39,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891459700] [2021-10-13 22:32:39,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:39,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:39,670 INFO L87 Difference]: Start difference. First operand 4322 states and 11854 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:40,009 INFO L93 Difference]: Finished difference Result 6044 states and 15818 transitions. [2021-10-13 22:32:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:40,017 INFO L225 Difference]: With dead ends: 6044 [2021-10-13 22:32:40,017 INFO L226 Difference]: Without dead ends: 5892 [2021-10-13 22:32:40,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 377.5ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:32:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2021-10-13 22:32:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 4247. [2021-10-13 22:32:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4246 states have (on average 2.7529439472444652) internal successors, (11689), 4246 states have internal predecessors, (11689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 11689 transitions. [2021-10-13 22:32:40,070 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 11689 transitions. Word has length 62 [2021-10-13 22:32:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:40,070 INFO L470 AbstractCegarLoop]: Abstraction has 4247 states and 11689 transitions. [2021-10-13 22:32:40,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:40,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 11689 transitions. [2021-10-13 22:32:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:40,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:40,074 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:32:40,097 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 22:32:40,275 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 22:32:40,275 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 71212333, now seen corresponding path program 23 times [2021-10-13 22:32:40,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:40,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021785145] [2021-10-13 22:32:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:40,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:40,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:40,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021785145] [2021-10-13 22:32:40,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021785145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:40,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568369448] [2021-10-13 22:32:40,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:32:40,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:40,401 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 22:32:40,402 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 22:32:42,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:32:42,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:42,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:42,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568369448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:42,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:42,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:42,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277444066] [2021-10-13 22:32:42,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:42,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:42,824 INFO L87 Difference]: Start difference. First operand 4247 states and 11689 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:43,081 INFO L93 Difference]: Finished difference Result 6357 states and 16449 transitions. [2021-10-13 22:32:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:32:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:43,089 INFO L225 Difference]: With dead ends: 6357 [2021-10-13 22:32:43,089 INFO L226 Difference]: Without dead ends: 6205 [2021-10-13 22:32:43,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 256.4ms TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2021-10-13 22:32:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-10-13 22:32:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 4297. [2021-10-13 22:32:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4296 states have (on average 2.7465083798882683) internal successors, (11799), 4296 states have internal predecessors, (11799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 11799 transitions. [2021-10-13 22:32:43,141 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 11799 transitions. Word has length 62 [2021-10-13 22:32:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:43,142 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 11799 transitions. [2021-10-13 22:32:43,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 11799 transitions. [2021-10-13 22:32:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:43,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:43,146 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:43,168 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 22:32:43,347 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 22:32:43,347 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:43,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1789920991, now seen corresponding path program 36 times [2021-10-13 22:32:43,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:43,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664691536] [2021-10-13 22:32:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:43,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:43,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:43,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664691536] [2021-10-13 22:32:43,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664691536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:43,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32189700] [2021-10-13 22:32:43,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:43,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:43,462 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 22:32:43,463 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 22:32:45,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:32:45,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:45,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:45,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:45,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32189700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:45,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:45,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:45,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815454823] [2021-10-13 22:32:45,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:45,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:45,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:45,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:45,922 INFO L87 Difference]: Start difference. First operand 4297 states and 11799 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:46,225 INFO L93 Difference]: Finished difference Result 6557 states and 16849 transitions. [2021-10-13 22:32:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:32:46,225 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:46,233 INFO L225 Difference]: With dead ends: 6557 [2021-10-13 22:32:46,233 INFO L226 Difference]: Without dead ends: 6405 [2021-10-13 22:32:46,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 308.2ms TimeCoverageRelationStatistics Valid=299, Invalid=823, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:32:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-10-13 22:32:46,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 4362. [2021-10-13 22:32:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 2.7376748452189865) internal successors, (11939), 4361 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 11939 transitions. [2021-10-13 22:32:46,289 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 11939 transitions. Word has length 62 [2021-10-13 22:32:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:46,289 INFO L470 AbstractCegarLoop]: Abstraction has 4362 states and 11939 transitions. [2021-10-13 22:32:46,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 11939 transitions. [2021-10-13 22:32:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:46,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:46,293 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:46,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-13 22:32:46,494 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 22:32:46,494 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1316592773, now seen corresponding path program 37 times [2021-10-13 22:32:46,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:46,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059732532] [2021-10-13 22:32:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:46,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:46,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:46,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059732532] [2021-10-13 22:32:46,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059732532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:46,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261084224] [2021-10-13 22:32:46,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:32:46,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:46,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:46,613 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 22:32:46,613 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 22:32:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:48,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:48,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:49,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261084224] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:49,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:49,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:49,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039012315] [2021-10-13 22:32:49,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:49,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:49,076 INFO L87 Difference]: Start difference. First operand 4362 states and 11939 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:49,354 INFO L93 Difference]: Finished difference Result 6582 states and 16904 transitions. [2021-10-13 22:32:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:32:49,355 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:49,366 INFO L225 Difference]: With dead ends: 6582 [2021-10-13 22:32:49,366 INFO L226 Difference]: Without dead ends: 6430 [2021-10-13 22:32:49,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 287.3ms TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:32:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2021-10-13 22:32:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 4352. [2021-10-13 22:32:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 2.7382210985980233) internal successors, (11914), 4351 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 11914 transitions. [2021-10-13 22:32:49,443 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 11914 transitions. Word has length 62 [2021-10-13 22:32:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:49,443 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 11914 transitions. [2021-10-13 22:32:49,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 11914 transitions. [2021-10-13 22:32:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:49,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:49,449 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:32:49,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:49,663 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 22:32:49,663 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:49,664 INFO L82 PathProgramCache]: Analyzing trace with hash -264374867, now seen corresponding path program 38 times [2021-10-13 22:32:49,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:49,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862194045] [2021-10-13 22:32:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:49,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:49,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:49,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862194045] [2021-10-13 22:32:49,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862194045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:49,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468365816] [2021-10-13 22:32:49,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:32:49,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:49,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:49,801 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 22:32:49,824 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 22:32:51,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:32:51,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:51,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:51,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:52,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468365816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:52,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:52,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:52,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081360594] [2021-10-13 22:32:52,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:52,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:52,366 INFO L87 Difference]: Start difference. First operand 4352 states and 11914 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:52,740 INFO L93 Difference]: Finished difference Result 6718 states and 17176 transitions. [2021-10-13 22:32:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:32:52,740 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:52,749 INFO L225 Difference]: With dead ends: 6718 [2021-10-13 22:32:52,749 INFO L226 Difference]: Without dead ends: 6566 [2021-10-13 22:32:52,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 356.7ms TimeCoverageRelationStatistics Valid=368, Invalid=1114, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:32:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2021-10-13 22:32:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 4352. [2021-10-13 22:32:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 2.7382210985980233) internal successors, (11914), 4351 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 11914 transitions. [2021-10-13 22:32:52,805 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 11914 transitions. Word has length 62 [2021-10-13 22:32:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:52,805 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 11914 transitions. [2021-10-13 22:32:52,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 11914 transitions. [2021-10-13 22:32:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:52,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:52,810 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:52,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-13 22:32:53,010 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 22:32:53,010 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:53,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1985257381, now seen corresponding path program 39 times [2021-10-13 22:32:53,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:53,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717769935] [2021-10-13 22:32:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:53,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:53,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:53,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717769935] [2021-10-13 22:32:53,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717769935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:53,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510799803] [2021-10-13 22:32:53,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:32:53,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:53,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:53,153 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 22:32:53,163 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 22:32:55,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:32:55,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:55,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:55,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:55,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510799803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:55,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:55,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:55,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011374555] [2021-10-13 22:32:55,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:55,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:55,727 INFO L87 Difference]: Start difference. First operand 4352 states and 11914 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:56,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:56,070 INFO L93 Difference]: Finished difference Result 6708 states and 17146 transitions. [2021-10-13 22:32:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:32:56,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:56,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:56,079 INFO L225 Difference]: With dead ends: 6708 [2021-10-13 22:32:56,079 INFO L226 Difference]: Without dead ends: 6556 [2021-10-13 22:32:56,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 364.5ms TimeCoverageRelationStatistics Valid=366, Invalid=1040, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:32:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2021-10-13 22:32:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 4392. [2021-10-13 22:32:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 2.7326349350945116) internal successors, (11999), 4391 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 11999 transitions. [2021-10-13 22:32:56,135 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 11999 transitions. Word has length 62 [2021-10-13 22:32:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:56,135 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 11999 transitions. [2021-10-13 22:32:56,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 11999 transitions. [2021-10-13 22:32:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:56,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:56,139 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:32:56,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 22:32:56,340 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 22:32:56,340 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:56,340 INFO L82 PathProgramCache]: Analyzing trace with hash -640075361, now seen corresponding path program 40 times [2021-10-13 22:32:56,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:56,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956834899] [2021-10-13 22:32:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:56,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:56,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:56,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956834899] [2021-10-13 22:32:56,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956834899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:56,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049822742] [2021-10-13 22:32:56,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:32:56,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:56,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:56,468 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 22:32:56,468 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 22:32:58,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:32:58,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:32:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:32:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:32:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:59,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049822742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:59,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:32:59,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:32:59,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539655562] [2021-10-13 22:32:59,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:32:59,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:32:59,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:32:59,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:32:59,077 INFO L87 Difference]: Start difference. First operand 4392 states and 11999 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:32:59,515 INFO L93 Difference]: Finished difference Result 6825 states and 17469 transitions. [2021-10-13 22:32:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:32:59,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:32:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:32:59,524 INFO L225 Difference]: With dead ends: 6825 [2021-10-13 22:32:59,525 INFO L226 Difference]: Without dead ends: 6521 [2021-10-13 22:32:59,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 417.7ms TimeCoverageRelationStatistics Valid=440, Invalid=1366, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:32:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2021-10-13 22:32:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 4362. [2021-10-13 22:32:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 2.7376748452189865) internal successors, (11939), 4361 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:32:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 11939 transitions. [2021-10-13 22:32:59,581 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 11939 transitions. Word has length 62 [2021-10-13 22:32:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:32:59,581 INFO L470 AbstractCegarLoop]: Abstraction has 4362 states and 11939 transitions. [2021-10-13 22:32:59,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:32:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 11939 transitions. [2021-10-13 22:32:59,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:32:59,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:32:59,585 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:32:59,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-13 22:32:59,786 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 22:32:59,786 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:32:59,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:32:59,786 INFO L82 PathProgramCache]: Analyzing trace with hash -239152135, now seen corresponding path program 24 times [2021-10-13 22:32:59,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:32:59,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027639670] [2021-10-13 22:32:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:32:59,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:32:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:32:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:32:59,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:32:59,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027639670] [2021-10-13 22:32:59,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027639670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:32:59,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082509972] [2021-10-13 22:32:59,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:32:59,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:32:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:32:59,921 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 22:32:59,949 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 22:33:02,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:33:02,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:02,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:02,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:02,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082509972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:02,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:02,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:02,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85805470] [2021-10-13 22:33:02,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:02,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:02,545 INFO L87 Difference]: Start difference. First operand 4362 states and 11939 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:02,784 INFO L93 Difference]: Finished difference Result 6557 states and 16849 transitions. [2021-10-13 22:33:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:33:02,784 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:02,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:02,792 INFO L225 Difference]: With dead ends: 6557 [2021-10-13 22:33:02,792 INFO L226 Difference]: Without dead ends: 6405 [2021-10-13 22:33:02,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 260.4ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-10-13 22:33:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-10-13 22:33:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 4412. [2021-10-13 22:33:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 2.7315801405576967) internal successors, (12049), 4411 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 12049 transitions. [2021-10-13 22:33:02,846 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 12049 transitions. Word has length 62 [2021-10-13 22:33:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:02,846 INFO L470 AbstractCegarLoop]: Abstraction has 4412 states and 12049 transitions. [2021-10-13 22:33:02,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 12049 transitions. [2021-10-13 22:33:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:02,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:02,851 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:02,873 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 22:33:03,051 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 22:33:03,051 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:03,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:03,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2100285459, now seen corresponding path program 41 times [2021-10-13 22:33:03,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:03,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113410269] [2021-10-13 22:33:03,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:03,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:03,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:03,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113410269] [2021-10-13 22:33:03,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113410269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:03,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422332468] [2021-10-13 22:33:03,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:03,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:03,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:03,189 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 22:33:03,217 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 22:33:05,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:33:05,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:05,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:05,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:05,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422332468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:05,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:05,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:05,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79317780] [2021-10-13 22:33:05,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:05,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:05,932 INFO L87 Difference]: Start difference. First operand 4412 states and 12049 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:06,263 INFO L93 Difference]: Finished difference Result 6757 states and 17249 transitions. [2021-10-13 22:33:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:33:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:06,276 INFO L225 Difference]: With dead ends: 6757 [2021-10-13 22:33:06,276 INFO L226 Difference]: Without dead ends: 6605 [2021-10-13 22:33:06,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 323.1ms TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:33:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2021-10-13 22:33:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 4412. [2021-10-13 22:33:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 2.7315801405576967) internal successors, (12049), 4411 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 12049 transitions. [2021-10-13 22:33:06,354 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 12049 transitions. Word has length 62 [2021-10-13 22:33:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:06,354 INFO L470 AbstractCegarLoop]: Abstraction has 4412 states and 12049 transitions. [2021-10-13 22:33:06,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 12049 transitions. [2021-10-13 22:33:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:06,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:06,359 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:06,382 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 22:33:06,559 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 22:33:06,559 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1626957241, now seen corresponding path program 42 times [2021-10-13 22:33:06,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:06,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189765454] [2021-10-13 22:33:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:06,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:06,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:06,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189765454] [2021-10-13 22:33:06,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189765454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:06,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293908682] [2021-10-13 22:33:06,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:06,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:06,700 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 22:33:06,722 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 22:33:09,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:33:09,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:09,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:09,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:09,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293908682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:09,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:09,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:09,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913935750] [2021-10-13 22:33:09,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:09,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:09,472 INFO L87 Difference]: Start difference. First operand 4412 states and 12049 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:09,779 INFO L93 Difference]: Finished difference Result 6822 states and 17384 transitions. [2021-10-13 22:33:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:33:09,779 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:09,789 INFO L225 Difference]: With dead ends: 6822 [2021-10-13 22:33:09,789 INFO L226 Difference]: Without dead ends: 6670 [2021-10-13 22:33:09,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 308.3ms TimeCoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:33:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6670 states. [2021-10-13 22:33:09,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6670 to 4452. [2021-10-13 22:33:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4451 states have (on average 2.7261289597843184) internal successors, (12134), 4451 states have internal predecessors, (12134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 12134 transitions. [2021-10-13 22:33:09,858 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 12134 transitions. Word has length 62 [2021-10-13 22:33:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:09,858 INFO L470 AbstractCegarLoop]: Abstraction has 4452 states and 12134 transitions. [2021-10-13 22:33:09,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 12134 transitions. [2021-10-13 22:33:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:09,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:09,864 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:33:09,888 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 22:33:10,064 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 22:33:10,065 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1003654573, now seen corresponding path program 25 times [2021-10-13 22:33:10,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:10,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919038628] [2021-10-13 22:33:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:10,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:10,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:10,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919038628] [2021-10-13 22:33:10,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919038628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:10,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784695842] [2021-10-13 22:33:10,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:10,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:10,191 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 22:33:10,192 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 22:33:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:12,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:12,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:12,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784695842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:12,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:12,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:12,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128373102] [2021-10-13 22:33:12,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:12,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:12,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:12,906 INFO L87 Difference]: Start difference. First operand 4452 states and 12134 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:13,173 INFO L93 Difference]: Finished difference Result 6662 states and 17094 transitions. [2021-10-13 22:33:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:33:13,174 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:13,182 INFO L225 Difference]: With dead ends: 6662 [2021-10-13 22:33:13,183 INFO L226 Difference]: Without dead ends: 6510 [2021-10-13 22:33:13,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 266.3ms TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:33:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2021-10-13 22:33:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 4477. [2021-10-13 22:33:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 2.723190348525469) internal successors, (12189), 4476 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 12189 transitions. [2021-10-13 22:33:13,243 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 12189 transitions. Word has length 62 [2021-10-13 22:33:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:13,243 INFO L470 AbstractCegarLoop]: Abstraction has 4477 states and 12189 transitions. [2021-10-13 22:33:13,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 12189 transitions. [2021-10-13 22:33:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:13,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:13,247 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:33:13,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:13,448 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 22:33:13,448 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:13,449 INFO L82 PathProgramCache]: Analyzing trace with hash -717903719, now seen corresponding path program 26 times [2021-10-13 22:33:13,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:13,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663347242] [2021-10-13 22:33:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:13,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:13,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:13,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663347242] [2021-10-13 22:33:13,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663347242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:13,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424047135] [2021-10-13 22:33:13,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:13,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:13,584 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 22:33:13,585 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 22:33:16,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:16,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:16,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:16,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424047135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:16,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:16,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:16,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688201642] [2021-10-13 22:33:16,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:16,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:16,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:16,546 INFO L87 Difference]: Start difference. First operand 4477 states and 12189 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:16,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:16,892 INFO L93 Difference]: Finished difference Result 8204 states and 21465 transitions. [2021-10-13 22:33:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:33:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:16,903 INFO L225 Difference]: With dead ends: 8204 [2021-10-13 22:33:16,903 INFO L226 Difference]: Without dead ends: 8052 [2021-10-13 22:33:16,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 353.1ms TimeCoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:33:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8052 states. [2021-10-13 22:33:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8052 to 4792. [2021-10-13 22:33:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4792 states, 4791 states have (on average 2.7539135879774577) internal successors, (13194), 4791 states have internal predecessors, (13194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4792 states to 4792 states and 13194 transitions. [2021-10-13 22:33:16,972 INFO L78 Accepts]: Start accepts. Automaton has 4792 states and 13194 transitions. Word has length 62 [2021-10-13 22:33:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:16,972 INFO L470 AbstractCegarLoop]: Abstraction has 4792 states and 13194 transitions. [2021-10-13 22:33:16,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4792 states and 13194 transitions. [2021-10-13 22:33:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:16,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:16,977 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:33:17,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:17,177 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 22:33:17,177 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:17,178 INFO L82 PathProgramCache]: Analyzing trace with hash -58330979, now seen corresponding path program 27 times [2021-10-13 22:33:17,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:17,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741112449] [2021-10-13 22:33:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:17,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:17,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:17,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741112449] [2021-10-13 22:33:17,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741112449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:17,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978984084] [2021-10-13 22:33:17,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:17,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:17,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:17,299 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 22:33:17,301 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 22:33:19,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:33:19,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:19,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:19,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:20,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978984084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:20,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:20,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:33:20,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964348230] [2021-10-13 22:33:20,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:33:20,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:20,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:33:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:33:20,205 INFO L87 Difference]: Start difference. First operand 4792 states and 13194 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:33:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:21,106 INFO L93 Difference]: Finished difference Result 11099 states and 29190 transitions. [2021-10-13 22:33:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:33:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:33:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:21,122 INFO L225 Difference]: With dead ends: 11099 [2021-10-13 22:33:21,122 INFO L226 Difference]: Without dead ends: 10274 [2021-10-13 22:33:21,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 797.6ms TimeCoverageRelationStatistics Valid=717, Invalid=2475, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:33:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10274 states. [2021-10-13 22:33:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10274 to 4982. [2021-10-13 22:33:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 4981 states have (on average 2.770728769323429) internal successors, (13801), 4981 states have internal predecessors, (13801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 13801 transitions. [2021-10-13 22:33:21,252 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 13801 transitions. Word has length 62 [2021-10-13 22:33:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:21,252 INFO L470 AbstractCegarLoop]: Abstraction has 4982 states and 13801 transitions. [2021-10-13 22:33:21,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:33:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 13801 transitions. [2021-10-13 22:33:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:21,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:21,257 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:21,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:21,457 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 22:33:21,457 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:21,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1452408097, now seen corresponding path program 43 times [2021-10-13 22:33:21,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:21,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152967538] [2021-10-13 22:33:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:21,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:21,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:21,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152967538] [2021-10-13 22:33:21,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152967538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:21,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106003154] [2021-10-13 22:33:21,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:21,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:21,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:21,575 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 22:33:21,577 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 22:33:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:24,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106003154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:24,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:24,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:24,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585918498] [2021-10-13 22:33:24,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:24,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:24,482 INFO L87 Difference]: Start difference. First operand 4982 states and 13801 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:24,968 INFO L93 Difference]: Finished difference Result 8034 states and 21030 transitions. [2021-10-13 22:33:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:33:24,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:24,979 INFO L225 Difference]: With dead ends: 8034 [2021-10-13 22:33:24,979 INFO L226 Difference]: Without dead ends: 7882 [2021-10-13 22:33:24,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 482.9ms TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:33:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7882 states. [2021-10-13 22:33:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7882 to 5157. [2021-10-13 22:33:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 2.786268425135764) internal successors, (14366), 5156 states have internal predecessors, (14366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 14366 transitions. [2021-10-13 22:33:25,050 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 14366 transitions. Word has length 62 [2021-10-13 22:33:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:25,050 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 14366 transitions. [2021-10-13 22:33:25,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 14366 transitions. [2021-10-13 22:33:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:25,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:25,055 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:25,078 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 22:33:25,255 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 22:33:25,255 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1716505381, now seen corresponding path program 44 times [2021-10-13 22:33:25,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:25,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503841216] [2021-10-13 22:33:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:25,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:25,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:25,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503841216] [2021-10-13 22:33:25,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503841216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:25,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871271660] [2021-10-13 22:33:25,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:25,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:25,362 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 22:33:25,363 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 22:33:27,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:27,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:27,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:27,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:28,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871271660] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:28,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:28,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:28,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379419624] [2021-10-13 22:33:28,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:28,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:28,333 INFO L87 Difference]: Start difference. First operand 5157 states and 14366 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:28,886 INFO L93 Difference]: Finished difference Result 8575 states and 22880 transitions. [2021-10-13 22:33:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 22:33:28,886 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:28,899 INFO L225 Difference]: With dead ends: 8575 [2021-10-13 22:33:28,899 INFO L226 Difference]: Without dead ends: 8423 [2021-10-13 22:33:28,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 477.4ms TimeCoverageRelationStatistics Valid=415, Invalid=1225, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 22:33:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8423 states. [2021-10-13 22:33:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8423 to 5372. [2021-10-13 22:33:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5371 states have (on average 2.8041333085086575) internal successors, (15061), 5371 states have internal predecessors, (15061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 15061 transitions. [2021-10-13 22:33:28,982 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 15061 transitions. Word has length 62 [2021-10-13 22:33:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:28,982 INFO L470 AbstractCegarLoop]: Abstraction has 5372 states and 15061 transitions. [2021-10-13 22:33:28,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 15061 transitions. [2021-10-13 22:33:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:28,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:28,988 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:29,012 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 22:33:29,188 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 22:33:29,188 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1918889175, now seen corresponding path program 45 times [2021-10-13 22:33:29,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:29,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047037815] [2021-10-13 22:33:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:29,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:29,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:29,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047037815] [2021-10-13 22:33:29,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047037815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:29,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275265101] [2021-10-13 22:33:29,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:29,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:29,296 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 22:33:29,355 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 22:33:32,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:33:32,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:32,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:32,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275265101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:32,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:32,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:33:32,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362382724] [2021-10-13 22:33:32,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:33:32,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:33:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:33:32,516 INFO L87 Difference]: Start difference. First operand 5372 states and 15061 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:33:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:33,384 INFO L93 Difference]: Finished difference Result 10937 states and 29219 transitions. [2021-10-13 22:33:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 22:33:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:33:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:33,399 INFO L225 Difference]: With dead ends: 10937 [2021-10-13 22:33:33,400 INFO L226 Difference]: Without dead ends: 10379 [2021-10-13 22:33:33,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 759.7ms TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:33:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2021-10-13 22:33:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 4982. [2021-10-13 22:33:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 4981 states have (on average 2.770728769323429) internal successors, (13801), 4981 states have internal predecessors, (13801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 13801 transitions. [2021-10-13 22:33:33,489 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 13801 transitions. Word has length 62 [2021-10-13 22:33:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:33,490 INFO L470 AbstractCegarLoop]: Abstraction has 4982 states and 13801 transitions. [2021-10-13 22:33:33,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:33:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 13801 transitions. [2021-10-13 22:33:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:33,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:33,494 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:33,517 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 22:33:33,695 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 22:33:33,695 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:33,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:33,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1516775931, now seen corresponding path program 46 times [2021-10-13 22:33:33,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:33,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937540086] [2021-10-13 22:33:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:33,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:33,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:33,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937540086] [2021-10-13 22:33:33,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937540086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:33,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15893519] [2021-10-13 22:33:33,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:33,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:33,822 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 22:33:33,823 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 22:33:36,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:33:36,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:36,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:36,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15893519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:36,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:36,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:36,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755943381] [2021-10-13 22:33:36,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:36,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:36,752 INFO L87 Difference]: Start difference. First operand 4982 states and 13801 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:37,228 INFO L93 Difference]: Finished difference Result 8083 states and 20948 transitions. [2021-10-13 22:33:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:33:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:37,239 INFO L225 Difference]: With dead ends: 8083 [2021-10-13 22:33:37,240 INFO L226 Difference]: Without dead ends: 7931 [2021-10-13 22:33:37,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 431.5ms TimeCoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:33:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7931 states. [2021-10-13 22:33:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7931 to 5267. [2021-10-13 22:33:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 2.7916824914546146) internal successors, (14701), 5266 states have internal predecessors, (14701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 14701 transitions. [2021-10-13 22:33:37,346 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 14701 transitions. Word has length 62 [2021-10-13 22:33:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:37,346 INFO L470 AbstractCegarLoop]: Abstraction has 5267 states and 14701 transitions. [2021-10-13 22:33:37,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 14701 transitions. [2021-10-13 22:33:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:37,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:37,351 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:37,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-13 22:33:37,551 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 22:33:37,551 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1141075437, now seen corresponding path program 47 times [2021-10-13 22:33:37,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:37,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834332833] [2021-10-13 22:33:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:37,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:37,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:37,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834332833] [2021-10-13 22:33:37,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834332833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:37,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440108126] [2021-10-13 22:33:37,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:33:37,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:37,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:37,658 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 22:33:37,658 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 22:33:40,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:33:40,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:40,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:40,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:40,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440108126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:40,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:40,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:40,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015184202] [2021-10-13 22:33:40,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:40,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:40,697 INFO L87 Difference]: Start difference. First operand 5267 states and 14701 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:41,215 INFO L93 Difference]: Finished difference Result 8551 states and 21909 transitions. [2021-10-13 22:33:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:33:41,216 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:41,228 INFO L225 Difference]: With dead ends: 8551 [2021-10-13 22:33:41,228 INFO L226 Difference]: Without dead ends: 8399 [2021-10-13 22:33:41,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 542.3ms TimeCoverageRelationStatistics Valid=496, Invalid=1574, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:33:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2021-10-13 22:33:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 5307. [2021-10-13 22:33:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5307 states, 5306 states have (on average 2.795137580098002) internal successors, (14831), 5306 states have internal predecessors, (14831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 14831 transitions. [2021-10-13 22:33:41,308 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 14831 transitions. Word has length 62 [2021-10-13 22:33:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:41,308 INFO L470 AbstractCegarLoop]: Abstraction has 5307 states and 14831 transitions. [2021-10-13 22:33:41,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 14831 transitions. [2021-10-13 22:33:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:41,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:41,314 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:41,338 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 22:33:41,514 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 22:33:41,514 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1405118509, now seen corresponding path program 48 times [2021-10-13 22:33:41,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:41,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751128847] [2021-10-13 22:33:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:41,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:41,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:41,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751128847] [2021-10-13 22:33:41,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751128847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:41,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128135668] [2021-10-13 22:33:41,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:33:41,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:41,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:41,689 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 22:33:41,690 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 22:33:44,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 22:33:44,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:44,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:44,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:44,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128135668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:44,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:44,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:44,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214527907] [2021-10-13 22:33:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:44,744 INFO L87 Difference]: Start difference. First operand 5307 states and 14831 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:45,293 INFO L93 Difference]: Finished difference Result 8493 states and 22260 transitions. [2021-10-13 22:33:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:33:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:45,304 INFO L225 Difference]: With dead ends: 8493 [2021-10-13 22:33:45,304 INFO L226 Difference]: Without dead ends: 8341 [2021-10-13 22:33:45,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 493.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:33:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2021-10-13 22:33:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 5457. [2021-10-13 22:33:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 2.8117668621700878) internal successors, (15341), 5456 states have internal predecessors, (15341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 15341 transitions. [2021-10-13 22:33:45,382 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 15341 transitions. Word has length 62 [2021-10-13 22:33:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:45,382 INFO L470 AbstractCegarLoop]: Abstraction has 5457 states and 15341 transitions. [2021-10-13 22:33:45,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 15341 transitions. [2021-10-13 22:33:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:45,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:45,388 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:45,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-13 22:33:45,588 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 22:33:45,588 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1763794969, now seen corresponding path program 49 times [2021-10-13 22:33:45,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:45,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945366197] [2021-10-13 22:33:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:45,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:45,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:45,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945366197] [2021-10-13 22:33:45,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945366197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:45,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646716585] [2021-10-13 22:33:45,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:33:45,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:45,689 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 22:33:45,690 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 22:33:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:48,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:48,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:48,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646716585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:48,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:48,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:48,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929057368] [2021-10-13 22:33:48,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:48,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:48,729 INFO L87 Difference]: Start difference. First operand 5457 states and 15341 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:49,328 INFO L93 Difference]: Finished difference Result 9151 states and 24557 transitions. [2021-10-13 22:33:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 22:33:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:49,346 INFO L225 Difference]: With dead ends: 9151 [2021-10-13 22:33:49,346 INFO L226 Difference]: Without dead ends: 8999 [2021-10-13 22:33:49,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 518.9ms TimeCoverageRelationStatistics Valid=505, Invalid=1565, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:33:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2021-10-13 22:33:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 5577. [2021-10-13 22:33:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5576 states have (on average 2.8185078909612624) internal successors, (15716), 5576 states have internal predecessors, (15716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 15716 transitions. [2021-10-13 22:33:49,463 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 15716 transitions. Word has length 62 [2021-10-13 22:33:49,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:49,463 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 15716 transitions. [2021-10-13 22:33:49,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 15716 transitions. [2021-10-13 22:33:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:49,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:49,469 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:33:49,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-10-13 22:33:49,669 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 22:33:49,670 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:49,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1871599587, now seen corresponding path program 50 times [2021-10-13 22:33:49,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:49,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020337745] [2021-10-13 22:33:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:49,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:49,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:49,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020337745] [2021-10-13 22:33:49,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020337745] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:49,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327635610] [2021-10-13 22:33:49,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:33:49,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:49,802 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 22:33:49,803 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 22:33:52,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:33:52,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:52,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:52,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327635610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:53,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:53,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:33:53,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935071828] [2021-10-13 22:33:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:33:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:33:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:33:53,042 INFO L87 Difference]: Start difference. First operand 5577 states and 15716 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:33:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:53,949 INFO L93 Difference]: Finished difference Result 11499 states and 31025 transitions. [2021-10-13 22:33:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 22:33:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:33:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:53,966 INFO L225 Difference]: With dead ends: 11499 [2021-10-13 22:33:53,966 INFO L226 Difference]: Without dead ends: 10941 [2021-10-13 22:33:53,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 805.3ms TimeCoverageRelationStatistics Valid=913, Invalid=3247, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:33:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10941 states. [2021-10-13 22:33:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10941 to 5272. [2021-10-13 22:33:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 2.799089356858281) internal successors, (14754), 5271 states have internal predecessors, (14754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 14754 transitions. [2021-10-13 22:33:54,096 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 14754 transitions. Word has length 62 [2021-10-13 22:33:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:54,096 INFO L470 AbstractCegarLoop]: Abstraction has 5272 states and 14754 transitions. [2021-10-13 22:33:54,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:33:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 14754 transitions. [2021-10-13 22:33:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:54,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:54,101 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:54,126 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 22:33:54,302 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 22:33:54,302 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1292985753, now seen corresponding path program 51 times [2021-10-13 22:33:54,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:54,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551991101] [2021-10-13 22:33:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:54,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:54,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:54,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551991101] [2021-10-13 22:33:54,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551991101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:54,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329380672] [2021-10-13 22:33:54,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:33:54,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:54,421 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 22:33:54,422 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 22:33:57,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:33:57,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:33:57,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:33:57,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:33:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:57,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329380672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:57,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:33:57,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:33:57,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667167841] [2021-10-13 22:33:57,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:33:57,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:33:57,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:33:57,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:33:57,528 INFO L87 Difference]: Start difference. First operand 5272 states and 14754 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:33:58,222 INFO L93 Difference]: Finished difference Result 8760 states and 23515 transitions. [2021-10-13 22:33:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:33:58,223 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:33:58,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:33:58,234 INFO L225 Difference]: With dead ends: 8760 [2021-10-13 22:33:58,234 INFO L226 Difference]: Without dead ends: 8608 [2021-10-13 22:33:58,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 583.2ms TimeCoverageRelationStatistics Valid=602, Invalid=1848, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:33:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2021-10-13 22:33:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 5512. [2021-10-13 22:33:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5512 states, 5511 states have (on average 2.8132825258573764) internal successors, (15504), 5511 states have internal predecessors, (15504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:33:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 15504 transitions. [2021-10-13 22:33:58,312 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 15504 transitions. Word has length 62 [2021-10-13 22:33:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:33:58,312 INFO L470 AbstractCegarLoop]: Abstraction has 5512 states and 15504 transitions. [2021-10-13 22:33:58,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:33:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 15504 transitions. [2021-10-13 22:33:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:33:58,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:33:58,319 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:33:58,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-13 22:33:58,523 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 22:33:58,523 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:33:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:33:58,524 INFO L82 PathProgramCache]: Analyzing trace with hash -633413013, now seen corresponding path program 52 times [2021-10-13 22:33:58,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:33:58,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098201121] [2021-10-13 22:33:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:33:58,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:33:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:33:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:33:58,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:33:58,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098201121] [2021-10-13 22:33:58,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098201121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:33:58,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841361544] [2021-10-13 22:33:58,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:33:58,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:33:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:33:58,646 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 22:33:58,647 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 22:34:01,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:01,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:01,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:01,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:01,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841361544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:01,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:01,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:34:01,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848147170] [2021-10-13 22:34:01,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:34:01,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:34:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:34:01,943 INFO L87 Difference]: Start difference. First operand 5512 states and 15504 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:34:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:02,924 INFO L93 Difference]: Finished difference Result 11220 states and 30250 transitions. [2021-10-13 22:34:02,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 22:34:02,924 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:34:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:02,940 INFO L225 Difference]: With dead ends: 11220 [2021-10-13 22:34:02,940 INFO L226 Difference]: Without dead ends: 10662 [2021-10-13 22:34:02,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 884.4ms TimeCoverageRelationStatistics Valid=972, Invalid=3318, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 22:34:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-10-13 22:34:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 5134. [2021-10-13 22:34:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5133 states have (on average 2.7919345412039744) internal successors, (14331), 5133 states have internal predecessors, (14331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 14331 transitions. [2021-10-13 22:34:03,028 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 14331 transitions. Word has length 62 [2021-10-13 22:34:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 5134 states and 14331 transitions. [2021-10-13 22:34:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:34:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 14331 transitions. [2021-10-13 22:34:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:03,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:03,033 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:34:03,057 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 22:34:03,233 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 22:34:03,233 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1391689779, now seen corresponding path program 53 times [2021-10-13 22:34:03,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:03,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262972231] [2021-10-13 22:34:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:03,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:03,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:03,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262972231] [2021-10-13 22:34:03,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262972231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:03,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706992593] [2021-10-13 22:34:03,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:03,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:03,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:03,401 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 22:34:03,428 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 22:34:06,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:34:06,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:06,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:06,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706992593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:06,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:06,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:06,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432189317] [2021-10-13 22:34:06,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:06,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:06,612 INFO L87 Difference]: Start difference. First operand 5134 states and 14331 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:06,969 INFO L93 Difference]: Finished difference Result 7363 states and 19233 transitions. [2021-10-13 22:34:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:34:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:06,979 INFO L225 Difference]: With dead ends: 7363 [2021-10-13 22:34:06,979 INFO L226 Difference]: Without dead ends: 7211 [2021-10-13 22:34:06,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 367.5ms TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:34:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7211 states. [2021-10-13 22:34:07,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7211 to 5109. [2021-10-13 22:34:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7948316366483947) internal successors, (14276), 5108 states have internal predecessors, (14276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14276 transitions. [2021-10-13 22:34:07,094 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14276 transitions. Word has length 62 [2021-10-13 22:34:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:07,095 INFO L470 AbstractCegarLoop]: Abstraction has 5109 states and 14276 transitions. [2021-10-13 22:34:07,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14276 transitions. [2021-10-13 22:34:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:07,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:07,100 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:07,124 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 22:34:07,300 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 22:34:07,300 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:07,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:07,301 INFO L82 PathProgramCache]: Analyzing trace with hash 896489133, now seen corresponding path program 54 times [2021-10-13 22:34:07,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:07,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389689026] [2021-10-13 22:34:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:07,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:07,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:07,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389689026] [2021-10-13 22:34:07,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389689026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:07,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163748265] [2021-10-13 22:34:07,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:07,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:07,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:07,431 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 22:34:07,460 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 22:34:10,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:34:10,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:10,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:10,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:10,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163748265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:10,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:10,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:10,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652415969] [2021-10-13 22:34:10,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:10,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:10,695 INFO L87 Difference]: Start difference. First operand 5109 states and 14276 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:11,269 INFO L93 Difference]: Finished difference Result 8318 states and 21791 transitions. [2021-10-13 22:34:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:34:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:11,280 INFO L225 Difference]: With dead ends: 8318 [2021-10-13 22:34:11,280 INFO L226 Difference]: Without dead ends: 8166 [2021-10-13 22:34:11,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 482.6ms TimeCoverageRelationStatistics Valid=420, Invalid=1386, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:34:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8166 states. [2021-10-13 22:34:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8166 to 5134. [2021-10-13 22:34:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5133 states have (on average 2.809468147282291) internal successors, (14421), 5133 states have internal predecessors, (14421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 14421 transitions. [2021-10-13 22:34:11,353 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 14421 transitions. Word has length 62 [2021-10-13 22:34:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:11,353 INFO L470 AbstractCegarLoop]: Abstraction has 5134 states and 14421 transitions. [2021-10-13 22:34:11,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 14421 transitions. [2021-10-13 22:34:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:11,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:11,358 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:11,384 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 22:34:11,558 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 22:34:11,558 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:11,559 INFO L82 PathProgramCache]: Analyzing trace with hash -229564685, now seen corresponding path program 55 times [2021-10-13 22:34:11,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:11,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673381405] [2021-10-13 22:34:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:11,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:11,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:11,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673381405] [2021-10-13 22:34:11,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673381405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:11,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191989709] [2021-10-13 22:34:11,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:11,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:11,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:11,676 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 22:34:11,677 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 22:34:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:14,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:14,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191989709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:14,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:14,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:14,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628301597] [2021-10-13 22:34:14,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:14,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:14,981 INFO L87 Difference]: Start difference. First operand 5134 states and 14421 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:15,551 INFO L93 Difference]: Finished difference Result 8916 states and 24042 transitions. [2021-10-13 22:34:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 22:34:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:15,564 INFO L225 Difference]: With dead ends: 8916 [2021-10-13 22:34:15,564 INFO L226 Difference]: Without dead ends: 8764 [2021-10-13 22:34:15,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 535.9ms TimeCoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:34:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2021-10-13 22:34:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 5344. [2021-10-13 22:34:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 2.8141493542953397) internal successors, (15036), 5343 states have internal predecessors, (15036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 15036 transitions. [2021-10-13 22:34:15,643 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 15036 transitions. Word has length 62 [2021-10-13 22:34:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:15,643 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 15036 transitions. [2021-10-13 22:34:15,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 15036 transitions. [2021-10-13 22:34:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:15,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:15,648 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:15,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:15,848 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 22:34:15,849 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:15,849 INFO L82 PathProgramCache]: Analyzing trace with hash 430008055, now seen corresponding path program 56 times [2021-10-13 22:34:15,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:15,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258612241] [2021-10-13 22:34:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:15,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:15,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:15,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258612241] [2021-10-13 22:34:15,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258612241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:15,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048153608] [2021-10-13 22:34:15,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:15,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:15,955 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 22:34:15,957 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 22:34:18,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:18,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:18,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:18,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:19,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048153608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:19,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:19,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:34:19,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675132448] [2021-10-13 22:34:19,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:34:19,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:34:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:34:19,345 INFO L87 Difference]: Start difference. First operand 5344 states and 15036 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:34:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:20,320 INFO L93 Difference]: Finished difference Result 11325 states and 30520 transitions. [2021-10-13 22:34:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 22:34:20,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:34:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:20,339 INFO L225 Difference]: With dead ends: 11325 [2021-10-13 22:34:20,339 INFO L226 Difference]: Without dead ends: 10767 [2021-10-13 22:34:20,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 819.5ms TimeCoverageRelationStatistics Valid=861, Invalid=3171, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 22:34:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10767 states. [2021-10-13 22:34:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10767 to 4969. [2021-10-13 22:34:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4969 states, 4968 states have (on average 2.7844202898550723) internal successors, (13833), 4968 states have internal predecessors, (13833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 13833 transitions. [2021-10-13 22:34:20,474 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 13833 transitions. Word has length 62 [2021-10-13 22:34:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:20,474 INFO L470 AbstractCegarLoop]: Abstraction has 4969 states and 13833 transitions. [2021-10-13 22:34:20,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:34:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 13833 transitions. [2021-10-13 22:34:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:20,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:20,481 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:34:20,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-13 22:34:20,695 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 22:34:20,695 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:20,696 INFO L82 PathProgramCache]: Analyzing trace with hash -227142561, now seen corresponding path program 57 times [2021-10-13 22:34:20,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:20,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904572345] [2021-10-13 22:34:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:20,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:20,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:20,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904572345] [2021-10-13 22:34:20,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904572345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:20,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437997678] [2021-10-13 22:34:20,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:20,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:20,797 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 22:34:20,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 22:34:23,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:34:23,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:23,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:23,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:24,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437997678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:24,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:24,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:24,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568839892] [2021-10-13 22:34:24,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:24,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:24,230 INFO L87 Difference]: Start difference. First operand 4969 states and 13833 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:24,679 INFO L93 Difference]: Finished difference Result 7970 states and 20451 transitions. [2021-10-13 22:34:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 22:34:24,679 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:24,690 INFO L225 Difference]: With dead ends: 7970 [2021-10-13 22:34:24,690 INFO L226 Difference]: Without dead ends: 7818 [2021-10-13 22:34:24,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 447.3ms TimeCoverageRelationStatistics Valid=421, Invalid=1471, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:34:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2021-10-13 22:34:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 5119. [2021-10-13 22:34:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 2.776084407971864) internal successors, (14208), 5118 states have internal predecessors, (14208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 14208 transitions. [2021-10-13 22:34:24,758 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 14208 transitions. Word has length 62 [2021-10-13 22:34:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:24,758 INFO L470 AbstractCegarLoop]: Abstraction has 5119 states and 14208 transitions. [2021-10-13 22:34:24,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 14208 transitions. [2021-10-13 22:34:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:24,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:24,763 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:24,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-13 22:34:24,963 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 22:34:24,964 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:24,964 INFO L82 PathProgramCache]: Analyzing trace with hash -602843055, now seen corresponding path program 58 times [2021-10-13 22:34:24,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:24,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404370494] [2021-10-13 22:34:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:24,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:25,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:25,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404370494] [2021-10-13 22:34:25,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404370494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:25,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928309925] [2021-10-13 22:34:25,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:25,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:25,077 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 22:34:25,078 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 22:34:28,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:28,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:28,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:28,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:28,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928309925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:28,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:28,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:28,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846602225] [2021-10-13 22:34:28,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:28,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:28,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:28,514 INFO L87 Difference]: Start difference. First operand 5119 states and 14208 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:28,995 INFO L93 Difference]: Finished difference Result 8269 states and 21056 transitions. [2021-10-13 22:34:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:34:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:29,006 INFO L225 Difference]: With dead ends: 8269 [2021-10-13 22:34:29,006 INFO L226 Difference]: Without dead ends: 8117 [2021-10-13 22:34:29,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 450.7ms TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:34:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2021-10-13 22:34:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 5159. [2021-10-13 22:34:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 2.771616905777433) internal successors, (14296), 5158 states have internal predecessors, (14296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 14296 transitions. [2021-10-13 22:34:29,078 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 14296 transitions. Word has length 62 [2021-10-13 22:34:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:29,078 INFO L470 AbstractCegarLoop]: Abstraction has 5159 states and 14296 transitions. [2021-10-13 22:34:29,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 14296 transitions. [2021-10-13 22:34:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:29,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:29,083 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:34:29,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-13 22:34:29,283 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 22:34:29,284 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:29,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1613656697, now seen corresponding path program 59 times [2021-10-13 22:34:29,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:29,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420786057] [2021-10-13 22:34:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:29,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:29,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:29,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420786057] [2021-10-13 22:34:29,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420786057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:29,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808657278] [2021-10-13 22:34:29,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:29,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:29,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:29,384 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 22:34:29,385 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 22:34:32,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:34:32,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:32,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:32,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:32,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808657278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:32,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:32,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:32,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003597267] [2021-10-13 22:34:32,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:32,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:32,855 INFO L87 Difference]: Start difference. First operand 5159 states and 14296 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:33,412 INFO L93 Difference]: Finished difference Result 8354 states and 21547 transitions. [2021-10-13 22:34:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 22:34:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:33,423 INFO L225 Difference]: With dead ends: 8354 [2021-10-13 22:34:33,423 INFO L226 Difference]: Without dead ends: 8202 [2021-10-13 22:34:33,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 517.8ms TimeCoverageRelationStatistics Valid=555, Invalid=1895, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:34:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8202 states. [2021-10-13 22:34:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8202 to 5239. [2021-10-13 22:34:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 2.7714776632302405) internal successors, (14517), 5238 states have internal predecessors, (14517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 14517 transitions. [2021-10-13 22:34:33,495 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 14517 transitions. Word has length 62 [2021-10-13 22:34:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:33,495 INFO L470 AbstractCegarLoop]: Abstraction has 5239 states and 14517 transitions. [2021-10-13 22:34:33,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 14517 transitions. [2021-10-13 22:34:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:33,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:33,500 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:33,526 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 22:34:33,700 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 22:34:33,700 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1989357191, now seen corresponding path program 60 times [2021-10-13 22:34:33,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:33,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225837474] [2021-10-13 22:34:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:33,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:33,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:33,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225837474] [2021-10-13 22:34:33,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225837474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:33,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017769108] [2021-10-13 22:34:33,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:34:33,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:33,823 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 22:34:33,824 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 22:34:36,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:34:36,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:36,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:36,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:37,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017769108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:37,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:37,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:37,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382469333] [2021-10-13 22:34:37,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:37,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:37,357 INFO L87 Difference]: Start difference. First operand 5239 states and 14517 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:37,890 INFO L93 Difference]: Finished difference Result 8734 states and 22444 transitions. [2021-10-13 22:34:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:34:37,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:37,902 INFO L225 Difference]: With dead ends: 8734 [2021-10-13 22:34:37,902 INFO L226 Difference]: Without dead ends: 8582 [2021-10-13 22:34:37,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 485.1ms TimeCoverageRelationStatistics Valid=489, Invalid=1673, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:34:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2021-10-13 22:34:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 5309. [2021-10-13 22:34:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 2.784853051996986) internal successors, (14782), 5308 states have internal predecessors, (14782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 14782 transitions. [2021-10-13 22:34:37,983 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 14782 transitions. Word has length 62 [2021-10-13 22:34:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:37,983 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 14782 transitions. [2021-10-13 22:34:37,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 14782 transitions. [2021-10-13 22:34:37,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:37,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:37,989 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:34:38,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-13 22:34:38,197 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 22:34:38,197 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash -240583841, now seen corresponding path program 61 times [2021-10-13 22:34:38,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:38,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141449500] [2021-10-13 22:34:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:38,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:38,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:38,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141449500] [2021-10-13 22:34:38,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141449500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:38,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154187079] [2021-10-13 22:34:38,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:34:38,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:38,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:38,381 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 22:34:38,381 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 22:34:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:41,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:41,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154187079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:41,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:41,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:41,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293464093] [2021-10-13 22:34:41,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:41,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:41,927 INFO L87 Difference]: Start difference. First operand 5309 states and 14782 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:42,493 INFO L93 Difference]: Finished difference Result 8963 states and 23528 transitions. [2021-10-13 22:34:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 22:34:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:42,505 INFO L225 Difference]: With dead ends: 8963 [2021-10-13 22:34:42,506 INFO L226 Difference]: Without dead ends: 8811 [2021-10-13 22:34:42,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 606.8ms TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 22:34:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8811 states. [2021-10-13 22:34:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8811 to 5414. [2021-10-13 22:34:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 2.798448180306669) internal successors, (15148), 5413 states have internal predecessors, (15148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 15148 transitions. [2021-10-13 22:34:42,610 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 15148 transitions. Word has length 62 [2021-10-13 22:34:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:42,610 INFO L470 AbstractCegarLoop]: Abstraction has 5414 states and 15148 transitions. [2021-10-13 22:34:42,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 15148 transitions. [2021-10-13 22:34:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:42,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:42,616 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:34:42,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-13 22:34:42,816 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 22:34:42,816 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1366637659, now seen corresponding path program 62 times [2021-10-13 22:34:42,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:42,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080019366] [2021-10-13 22:34:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:42,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:42,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:42,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080019366] [2021-10-13 22:34:42,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080019366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:42,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766631930] [2021-10-13 22:34:42,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:34:42,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:42,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:42,925 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 22:34:42,926 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 22:34:46,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:34:46,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:46,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:46,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:46,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766631930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:46,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:46,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:46,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142914855] [2021-10-13 22:34:46,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:46,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:46,482 INFO L87 Difference]: Start difference. First operand 5414 states and 15148 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:47,071 INFO L93 Difference]: Finished difference Result 9466 states and 25357 transitions. [2021-10-13 22:34:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:34:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:47,084 INFO L225 Difference]: With dead ends: 9466 [2021-10-13 22:34:47,084 INFO L226 Difference]: Without dead ends: 9314 [2021-10-13 22:34:47,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 550.5ms TimeCoverageRelationStatistics Valid=618, Invalid=1932, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:34:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2021-10-13 22:34:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 5534. [2021-10-13 22:34:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5533 states have (on average 2.8055304536417855) internal successors, (15523), 5533 states have internal predecessors, (15523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 15523 transitions. [2021-10-13 22:34:47,167 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 15523 transitions. Word has length 62 [2021-10-13 22:34:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:47,167 INFO L470 AbstractCegarLoop]: Abstraction has 5534 states and 15523 transitions. [2021-10-13 22:34:47,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:47,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 15523 transitions. [2021-10-13 22:34:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:47,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:47,173 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:34:47,199 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 22:34:47,374 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 22:34:47,374 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash -707064919, now seen corresponding path program 63 times [2021-10-13 22:34:47,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:47,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596997918] [2021-10-13 22:34:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:47,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:47,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:47,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596997918] [2021-10-13 22:34:47,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596997918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:47,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442505350] [2021-10-13 22:34:47,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:34:47,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:47,518 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 22:34:47,519 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 22:34:50,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:34:50,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:50,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:50,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:51,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442505350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:51,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:51,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:34:51,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970977441] [2021-10-13 22:34:51,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:34:51,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:34:51,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:34:51,169 INFO L87 Difference]: Start difference. First operand 5534 states and 15523 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:34:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:52,097 INFO L93 Difference]: Finished difference Result 12070 states and 32260 transitions. [2021-10-13 22:34:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 22:34:52,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:34:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:52,114 INFO L225 Difference]: With dead ends: 12070 [2021-10-13 22:34:52,114 INFO L226 Difference]: Without dead ends: 11464 [2021-10-13 22:34:52,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 814.2ms TimeCoverageRelationStatistics Valid=887, Invalid=3273, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:34:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2021-10-13 22:34:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 5466. [2021-10-13 22:34:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 5465 states have (on average 2.77804208600183) internal successors, (15182), 5465 states have internal predecessors, (15182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 15182 transitions. [2021-10-13 22:34:52,233 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 15182 transitions. Word has length 62 [2021-10-13 22:34:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:52,233 INFO L470 AbstractCegarLoop]: Abstraction has 5466 states and 15182 transitions. [2021-10-13 22:34:52,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:34:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 15182 transitions. [2021-10-13 22:34:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:52,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:52,238 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:52,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-13 22:34:52,439 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 22:34:52,439 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash -128451085, now seen corresponding path program 64 times [2021-10-13 22:34:52,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:52,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010519896] [2021-10-13 22:34:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:52,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:52,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:52,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010519896] [2021-10-13 22:34:52,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010519896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:52,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183786637] [2021-10-13 22:34:52,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:34:52,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:52,551 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 22:34:52,551 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 22:34:55,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:34:55,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:34:55,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:34:55,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:34:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:56,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183786637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:56,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:34:56,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:34:56,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408098266] [2021-10-13 22:34:56,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:34:56,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:34:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:34:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:34:56,222 INFO L87 Difference]: Start difference. First operand 5466 states and 15182 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:34:56,994 INFO L93 Difference]: Finished difference Result 9743 states and 26042 transitions. [2021-10-13 22:34:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 22:34:56,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:34:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:34:57,008 INFO L225 Difference]: With dead ends: 9743 [2021-10-13 22:34:57,008 INFO L226 Difference]: Without dead ends: 9591 [2021-10-13 22:34:57,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 706.6ms TimeCoverageRelationStatistics Valid=815, Invalid=2607, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:34:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9591 states. [2021-10-13 22:34:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9591 to 5706. [2021-10-13 22:34:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 5705 states have (on average 2.792638036809816) internal successors, (15932), 5705 states have internal predecessors, (15932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:34:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 15932 transitions. [2021-10-13 22:34:57,112 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 15932 transitions. Word has length 62 [2021-10-13 22:34:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:34:57,113 INFO L470 AbstractCegarLoop]: Abstraction has 5706 states and 15932 transitions. [2021-10-13 22:34:57,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:34:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 15932 transitions. [2021-10-13 22:34:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:34:57,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:34:57,118 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:34:57,147 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 22:34:57,320 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 22:34:57,320 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:34:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:34:57,321 INFO L82 PathProgramCache]: Analyzing trace with hash 531121655, now seen corresponding path program 65 times [2021-10-13 22:34:57,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:34:57,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033539618] [2021-10-13 22:34:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:34:57,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:34:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:34:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:34:57,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:34:57,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033539618] [2021-10-13 22:34:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033539618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:34:57,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132068384] [2021-10-13 22:34:57,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:34:57,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:34:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:34:57,487 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 22:34:57,487 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 22:35:00,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:35:00,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:00,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:00,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:01,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132068384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:01,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:01,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:01,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045835282] [2021-10-13 22:35:01,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:01,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:01,234 INFO L87 Difference]: Start difference. First operand 5706 states and 15932 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:02,299 INFO L93 Difference]: Finished difference Result 11653 states and 31282 transitions. [2021-10-13 22:35:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-13 22:35:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:35:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:02,315 INFO L225 Difference]: With dead ends: 11653 [2021-10-13 22:35:02,315 INFO L226 Difference]: Without dead ends: 11095 [2021-10-13 22:35:02,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1918 ImplicationChecksByTransitivity, 991.6ms TimeCoverageRelationStatistics Valid=1206, Invalid=4344, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 22:35:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11095 states. [2021-10-13 22:35:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11095 to 5246. [2021-10-13 22:35:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 2.7639656816015252) internal successors, (14497), 5245 states have internal predecessors, (14497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 14497 transitions. [2021-10-13 22:35:02,404 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 14497 transitions. Word has length 62 [2021-10-13 22:35:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:02,404 INFO L470 AbstractCegarLoop]: Abstraction has 5246 states and 14497 transitions. [2021-10-13 22:35:02,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 14497 transitions. [2021-10-13 22:35:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:02,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:02,409 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:02,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-13 22:35:02,609 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 22:35:02,609 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:02,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:02,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1042940369, now seen corresponding path program 66 times [2021-10-13 22:35:02,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:02,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394144973] [2021-10-13 22:35:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:02,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:02,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:02,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394144973] [2021-10-13 22:35:02,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394144973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:02,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596060711] [2021-10-13 22:35:02,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:02,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:02,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:02,713 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 22:35:02,713 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 22:35:06,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:35:06,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:06,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:06,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:06,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596060711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:06,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:06,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:35:06,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634640296] [2021-10-13 22:35:06,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:06,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:06,484 INFO L87 Difference]: Start difference. First operand 5246 states and 14497 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:35:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:07,362 INFO L93 Difference]: Finished difference Result 9798 states and 25382 transitions. [2021-10-13 22:35:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 22:35:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:35:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:07,375 INFO L225 Difference]: With dead ends: 9798 [2021-10-13 22:35:07,375 INFO L226 Difference]: Without dead ends: 9646 [2021-10-13 22:35:07,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 780.1ms TimeCoverageRelationStatistics Valid=835, Invalid=2587, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:35:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9646 states. [2021-10-13 22:35:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9646 to 5296. [2021-10-13 22:35:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 2.7756373937677052) internal successors, (14697), 5295 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 14697 transitions. [2021-10-13 22:35:07,459 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 14697 transitions. Word has length 62 [2021-10-13 22:35:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:07,459 INFO L470 AbstractCegarLoop]: Abstraction has 5296 states and 14697 transitions. [2021-10-13 22:35:07,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:35:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 14697 transitions. [2021-10-13 22:35:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:07,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:07,463 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:07,490 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 22:35:07,664 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 22:35:07,664 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash -83113449, now seen corresponding path program 67 times [2021-10-13 22:35:07,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:07,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000091949] [2021-10-13 22:35:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:07,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:07,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:07,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000091949] [2021-10-13 22:35:07,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000091949] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:07,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019057325] [2021-10-13 22:35:07,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:07,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:07,827 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 22:35:07,828 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 22:35:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:11,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:11,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:11,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019057325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:11,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:11,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:35:11,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685189485] [2021-10-13 22:35:11,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:11,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:11,569 INFO L87 Difference]: Start difference. First operand 5296 states and 14697 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:35:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:12,343 INFO L93 Difference]: Finished difference Result 10040 states and 26744 transitions. [2021-10-13 22:35:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 22:35:12,343 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:35:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:12,358 INFO L225 Difference]: With dead ends: 10040 [2021-10-13 22:35:12,358 INFO L226 Difference]: Without dead ends: 9888 [2021-10-13 22:35:12,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 709.0ms TimeCoverageRelationStatistics Valid=746, Invalid=2334, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:35:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9888 states. [2021-10-13 22:35:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9888 to 5416. [2021-10-13 22:35:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5416 states, 5415 states have (on average 2.7833795013850415) internal successors, (15072), 5415 states have internal predecessors, (15072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 15072 transitions. [2021-10-13 22:35:12,487 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 15072 transitions. Word has length 62 [2021-10-13 22:35:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:12,487 INFO L470 AbstractCegarLoop]: Abstraction has 5416 states and 15072 transitions. [2021-10-13 22:35:12,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:35:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 15072 transitions. [2021-10-13 22:35:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:12,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:12,493 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:12,519 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 22:35:12,693 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 22:35:12,693 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash 576459291, now seen corresponding path program 68 times [2021-10-13 22:35:12,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:12,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026536686] [2021-10-13 22:35:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:12,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:12,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:12,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026536686] [2021-10-13 22:35:12,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026536686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:12,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144317572] [2021-10-13 22:35:12,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:12,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:12,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:12,803 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 22:35:12,803 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 22:35:16,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:16,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:16,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:16,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144317572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:16,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:16,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:16,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736972010] [2021-10-13 22:35:16,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:16,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:16,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:16,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:16,647 INFO L87 Difference]: Start difference. First operand 5416 states and 15072 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:18,034 INFO L93 Difference]: Finished difference Result 12400 states and 33239 transitions. [2021-10-13 22:35:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 22:35:18,035 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:35:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:18,055 INFO L225 Difference]: With dead ends: 12400 [2021-10-13 22:35:18,055 INFO L226 Difference]: Without dead ends: 11842 [2021-10-13 22:35:18,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 1162.6ms TimeCoverageRelationStatistics Valid=1196, Invalid=4206, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 22:35:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2021-10-13 22:35:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 5316. [2021-10-13 22:35:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 2.7650047036688616) internal successors, (14696), 5315 states have internal predecessors, (14696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 14696 transitions. [2021-10-13 22:35:18,181 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 14696 transitions. Word has length 62 [2021-10-13 22:35:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:18,182 INFO L470 AbstractCegarLoop]: Abstraction has 5316 states and 14696 transitions. [2021-10-13 22:35:18,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 14696 transitions. [2021-10-13 22:35:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:18,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:18,187 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:35:18,214 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 22:35:18,388 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 22:35:18,388 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2145924133, now seen corresponding path program 69 times [2021-10-13 22:35:18,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:18,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420018772] [2021-10-13 22:35:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:18,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:18,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:18,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420018772] [2021-10-13 22:35:18,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420018772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:18,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636969799] [2021-10-13 22:35:18,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:18,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:18,503 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 22:35:18,504 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 22:35:22,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 22:35:22,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:22,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:22,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:22,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636969799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:22,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:22,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:22,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329912159] [2021-10-13 22:35:22,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:22,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:22,481 INFO L87 Difference]: Start difference. First operand 5316 states and 14696 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:23,621 INFO L93 Difference]: Finished difference Result 12250 states and 32660 transitions. [2021-10-13 22:35:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 22:35:23,621 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:35:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:23,638 INFO L225 Difference]: With dead ends: 12250 [2021-10-13 22:35:23,638 INFO L226 Difference]: Without dead ends: 11398 [2021-10-13 22:35:23,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1789 ImplicationChecksByTransitivity, 1016.1ms TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 22:35:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11398 states. [2021-10-13 22:35:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11398 to 5406. [2021-10-13 22:35:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 2.7796484736355227) internal successors, (15024), 5405 states have internal predecessors, (15024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 15024 transitions. [2021-10-13 22:35:23,736 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 15024 transitions. Word has length 62 [2021-10-13 22:35:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:23,736 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 15024 transitions. [2021-10-13 22:35:23,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 15024 transitions. [2021-10-13 22:35:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:23,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:23,741 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 22:35:23,771 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 22:35:23,942 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 22:35:23,942 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:23,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1060539167, now seen corresponding path program 70 times [2021-10-13 22:35:23,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:23,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39318152] [2021-10-13 22:35:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:23,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:24,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:24,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39318152] [2021-10-13 22:35:24,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39318152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:24,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538292122] [2021-10-13 22:35:24,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:24,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:24,136 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 22:35:24,137 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 22:35:27,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:27,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:27,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:27,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:28,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538292122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:28,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:28,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-10-13 22:35:28,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035779160] [2021-10-13 22:35:28,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 22:35:28,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 22:35:28,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-13 22:35:28,070 INFO L87 Difference]: Start difference. First operand 5406 states and 15024 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:35:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:28,450 INFO L93 Difference]: Finished difference Result 7948 states and 20781 transitions. [2021-10-13 22:35:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:35:28,451 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 62 [2021-10-13 22:35:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:28,465 INFO L225 Difference]: With dead ends: 7948 [2021-10-13 22:35:28,465 INFO L226 Difference]: Without dead ends: 7796 [2021-10-13 22:35:28,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 369.8ms TimeCoverageRelationStatistics Valid=304, Invalid=956, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:35:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2021-10-13 22:35:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 5381. [2021-10-13 22:35:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 5380 states have (on average 2.782342007434944) internal successors, (14969), 5380 states have internal predecessors, (14969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 14969 transitions. [2021-10-13 22:35:28,545 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 14969 transitions. Word has length 62 [2021-10-13 22:35:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:28,545 INFO L470 AbstractCegarLoop]: Abstraction has 5381 states and 14969 transitions. [2021-10-13 22:35:28,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 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 22:35:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 14969 transitions. [2021-10-13 22:35:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 22:35:28,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:28,552 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:35:28,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:28,767 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 22:35:28,767 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:28,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1134647527, now seen corresponding path program 71 times [2021-10-13 22:35:28,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:28,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616909945] [2021-10-13 22:35:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:28,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:28,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:28,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616909945] [2021-10-13 22:35:28,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616909945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:28,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125799242] [2021-10-13 22:35:28,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:35:28,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:28,963 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 22:35:28,963 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 22:35:32,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:35:32,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:32,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 22:35:32,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:32,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125799242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:32,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:32,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 22:35:32,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998560684] [2021-10-13 22:35:32,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:35:32,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:32,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:35:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:35:32,933 INFO L87 Difference]: Start difference. First operand 5381 states and 14969 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:34,034 INFO L93 Difference]: Finished difference Result 11639 states and 31175 transitions. [2021-10-13 22:35:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 22:35:34,034 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 62 [2021-10-13 22:35:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:34,050 INFO L225 Difference]: With dead ends: 11639 [2021-10-13 22:35:34,050 INFO L226 Difference]: Without dead ends: 11081 [2021-10-13 22:35:34,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 948.7ms TimeCoverageRelationStatistics Valid=961, Invalid=3461, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 22:35:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11081 states. [2021-10-13 22:35:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11081 to 5401. [2021-10-13 22:35:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 5400 states have (on average 2.7890740740740743) internal successors, (15061), 5400 states have internal predecessors, (15061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 15061 transitions. [2021-10-13 22:35:34,136 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 15061 transitions. Word has length 62 [2021-10-13 22:35:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:34,136 INFO L470 AbstractCegarLoop]: Abstraction has 5401 states and 15061 transitions. [2021-10-13 22:35:34,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 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 22:35:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 15061 transitions. [2021-10-13 22:35:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:35:34,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:34,141 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:35:34,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-13 22:35:34,341 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 22:35:34,341 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1097377418, now seen corresponding path program 72 times [2021-10-13 22:35:34,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:34,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445990516] [2021-10-13 22:35:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:34,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:34,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:34,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445990516] [2021-10-13 22:35:34,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445990516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:34,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102287085] [2021-10-13 22:35:34,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:35:34,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:34,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:34,493 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 22:35:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-13 22:35:38,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:35:38,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:38,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:35:38,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:38,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102287085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:38,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:38,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:35:38,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197394320] [2021-10-13 22:35:38,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:35:38,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:35:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:35:38,897 INFO L87 Difference]: Start difference. First operand 5401 states and 15061 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:39,256 INFO L93 Difference]: Finished difference Result 7956 states and 20861 transitions. [2021-10-13 22:35:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:35:39,256 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:35:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:39,267 INFO L225 Difference]: With dead ends: 7956 [2021-10-13 22:35:39,267 INFO L226 Difference]: Without dead ends: 7804 [2021-10-13 22:35:39,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 408.9ms TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:35:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2021-10-13 22:35:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 5491. [2021-10-13 22:35:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 5490 states have (on average 2.7794171220400727) internal successors, (15259), 5490 states have internal predecessors, (15259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 15259 transitions. [2021-10-13 22:35:39,375 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 15259 transitions. Word has length 67 [2021-10-13 22:35:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:39,375 INFO L470 AbstractCegarLoop]: Abstraction has 5491 states and 15259 transitions. [2021-10-13 22:35:39,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 15259 transitions. [2021-10-13 22:35:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:35:39,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:39,380 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, 1, 1] [2021-10-13 22:35:39,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-13 22:35:39,581 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 22:35:39,581 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash 428168706, now seen corresponding path program 73 times [2021-10-13 22:35:39,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:39,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982786054] [2021-10-13 22:35:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:39,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:39,707 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 22:35:39,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:39,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982786054] [2021-10-13 22:35:39,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982786054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:39,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983922334] [2021-10-13 22:35:39,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:35:39,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:39,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:39,708 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:39,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-13 22:35:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:43,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:35:43,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:43,971 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 22:35:43,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983922334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:43,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:43,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:35:43,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22743579] [2021-10-13 22:35:43,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:35:43,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:43,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:35:43,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:35:43,972 INFO L87 Difference]: Start difference. First operand 5491 states and 15259 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:44,394 INFO L93 Difference]: Finished difference Result 8082 states and 21111 transitions. [2021-10-13 22:35:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:35:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:44,403 INFO L225 Difference]: With dead ends: 8082 [2021-10-13 22:35:44,404 INFO L226 Difference]: Without dead ends: 7930 [2021-10-13 22:35:44,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 454.3ms TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:35:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7930 states. [2021-10-13 22:35:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7930 to 5591. [2021-10-13 22:35:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5590 states have (on average 2.7690518783542037) internal successors, (15479), 5590 states have internal predecessors, (15479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 15479 transitions. [2021-10-13 22:35:44,472 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 15479 transitions. Word has length 67 [2021-10-13 22:35:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:44,472 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 15479 transitions. [2021-10-13 22:35:44,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 15479 transitions. [2021-10-13 22:35:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:35:44,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:44,477 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:35:44,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:44,677 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 22:35:44,678 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:44,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:44,678 INFO L82 PathProgramCache]: Analyzing trace with hash 52468212, now seen corresponding path program 74 times [2021-10-13 22:35:44,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:44,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730446825] [2021-10-13 22:35:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:44,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:44,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:44,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730446825] [2021-10-13 22:35:44,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730446825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:44,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304175516] [2021-10-13 22:35:44,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:35:44,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:44,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:44,859 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:35:44,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-13 22:35:48,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:35:48,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:48,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:35:48,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:35:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304175516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:49,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:49,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:35:49,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114343224] [2021-10-13 22:35:49,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:35:49,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:35:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:35:49,215 INFO L87 Difference]: Start difference. First operand 5591 states and 15479 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:49,646 INFO L93 Difference]: Finished difference Result 8212 states and 21381 transitions. [2021-10-13 22:35:49,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:35:49,647 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:35:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:49,656 INFO L225 Difference]: With dead ends: 8212 [2021-10-13 22:35:49,656 INFO L226 Difference]: Without dead ends: 8060 [2021-10-13 22:35:49,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 450.7ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:35:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-10-13 22:35:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 5591. [2021-10-13 22:35:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5590 states have (on average 2.7690518783542037) internal successors, (15479), 5590 states have internal predecessors, (15479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 15479 transitions. [2021-10-13 22:35:49,724 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 15479 transitions. Word has length 67 [2021-10-13 22:35:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:49,724 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 15479 transitions. [2021-10-13 22:35:49,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 15479 transitions. [2021-10-13 22:35:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:35:49,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:49,730 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, 1, 1] [2021-10-13 22:35:49,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-13 22:35:49,930 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 22:35:49,930 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1437248536, now seen corresponding path program 75 times [2021-10-13 22:35:49,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:49,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984498880] [2021-10-13 22:35:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:49,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:50,068 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 22:35:50,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:50,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984498880] [2021-10-13 22:35:50,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984498880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:50,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619308428] [2021-10-13 22:35:50,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:35:50,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:50,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:50,071 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 22:35:50,100 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 22:35:53,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:35:53,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:53,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:35:53,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:54,548 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 22:35:54,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619308428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:54,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:54,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:35:54,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580675946] [2021-10-13 22:35:54,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:35:54,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:35:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:35:54,549 INFO L87 Difference]: Start difference. First operand 5591 states and 15479 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:35:55,050 INFO L93 Difference]: Finished difference Result 8136 states and 21241 transitions. [2021-10-13 22:35:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:35:55,051 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:35:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:35:55,061 INFO L225 Difference]: With dead ends: 8136 [2021-10-13 22:35:55,062 INFO L226 Difference]: Without dead ends: 7984 [2021-10-13 22:35:55,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 530.3ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:35:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7984 states. [2021-10-13 22:35:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7984 to 5566. [2021-10-13 22:35:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5565 states have (on average 2.7716082659478887) internal successors, (15424), 5565 states have internal predecessors, (15424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 15424 transitions. [2021-10-13 22:35:55,136 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 15424 transitions. Word has length 67 [2021-10-13 22:35:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:35:55,136 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 15424 transitions. [2021-10-13 22:35:55,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:35:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 15424 transitions. [2021-10-13 22:35:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:35:55,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:35:55,141 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, 1, 1] [2021-10-13 22:35:55,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-13 22:35:55,342 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 22:35:55,342 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:35:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:35:55,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2128302326, now seen corresponding path program 76 times [2021-10-13 22:35:55,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:35:55,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957242254] [2021-10-13 22:35:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:35:55,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:35:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:35:55,469 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 22:35:55,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:35:55,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957242254] [2021-10-13 22:35:55,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957242254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:55,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293190174] [2021-10-13 22:35:55,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:35:55,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:35:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:35:55,470 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 22:35:55,471 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 22:35:59,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:35:59,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:35:59,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:35:59,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:35:59,761 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 22:35:59,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293190174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:35:59,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:35:59,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:35:59,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935623623] [2021-10-13 22:35:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:35:59,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:35:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:35:59,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:35:59,762 INFO L87 Difference]: Start difference. First operand 5566 states and 15424 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:00,268 INFO L93 Difference]: Finished difference Result 8155 states and 21254 transitions. [2021-10-13 22:36:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 22:36:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:00,280 INFO L225 Difference]: With dead ends: 8155 [2021-10-13 22:36:00,281 INFO L226 Difference]: Without dead ends: 8003 [2021-10-13 22:36:00,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 528.0ms TimeCoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:36:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8003 states. [2021-10-13 22:36:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8003 to 5716. [2021-10-13 22:36:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5715 states have (on average 2.7566054243219598) internal successors, (15754), 5715 states have internal predecessors, (15754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 15754 transitions. [2021-10-13 22:36:00,360 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 15754 transitions. Word has length 67 [2021-10-13 22:36:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:00,361 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 15754 transitions. [2021-10-13 22:36:00,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 15754 transitions. [2021-10-13 22:36:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:00,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:00,367 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, 1, 1] [2021-10-13 22:36:00,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:00,571 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 22:36:00,572 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:00,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1752601832, now seen corresponding path program 77 times [2021-10-13 22:36:00,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:00,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549405828] [2021-10-13 22:36:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:00,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:00,702 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 22:36:00,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:00,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549405828] [2021-10-13 22:36:00,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549405828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:00,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327767988] [2021-10-13 22:36:00,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:00,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:00,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:00,703 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 22:36:00,704 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 22:36:04,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:36:04,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:04,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:04,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:05,085 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 22:36:05,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327767988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:05,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:05,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:05,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247071547] [2021-10-13 22:36:05,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:05,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:05,086 INFO L87 Difference]: Start difference. First operand 5716 states and 15754 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:05,519 INFO L93 Difference]: Finished difference Result 8396 states and 21749 transitions. [2021-10-13 22:36:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 22:36:05,520 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:05,531 INFO L225 Difference]: With dead ends: 8396 [2021-10-13 22:36:05,531 INFO L226 Difference]: Without dead ends: 8244 [2021-10-13 22:36:05,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 435.0ms TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:36:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2021-10-13 22:36:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 5741. [2021-10-13 22:36:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5740 states have (on average 2.7541811846689894) internal successors, (15809), 5740 states have internal predecessors, (15809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 15809 transitions. [2021-10-13 22:36:05,606 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 15809 transitions. Word has length 67 [2021-10-13 22:36:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:05,606 INFO L470 AbstractCegarLoop]: Abstraction has 5741 states and 15809 transitions. [2021-10-13 22:36:05,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 15809 transitions. [2021-10-13 22:36:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:05,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:05,611 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 22:36:05,639 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 22:36:05,812 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 22:36:05,812 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:05,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2131533842, now seen corresponding path program 28 times [2021-10-13 22:36:05,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:05,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993195328] [2021-10-13 22:36:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:05,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:05,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:05,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993195328] [2021-10-13 22:36:05,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993195328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:05,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43906491] [2021-10-13 22:36:05,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:05,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:05,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:05,911 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 22:36:05,911 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 22:36:09,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:09,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:09,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 22:36:09,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:10,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43906491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:36:10,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 22:36:10,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-10-13 22:36:10,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173666315] [2021-10-13 22:36:10,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 22:36:10,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 22:36:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-13 22:36:10,020 INFO L87 Difference]: Start difference. First operand 5741 states and 15809 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 22:36:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:10,211 INFO L93 Difference]: Finished difference Result 9401 states and 26271 transitions. [2021-10-13 22:36:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 22:36:10,211 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 67 [2021-10-13 22:36:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:10,227 INFO L225 Difference]: With dead ends: 9401 [2021-10-13 22:36:10,228 INFO L226 Difference]: Without dead ends: 8298 [2021-10-13 22:36:10,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-10-13 22:36:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-10-13 22:36:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 8103. [2021-10-13 22:36:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 8102 states have (on average 2.8035053073315233) internal successors, (22714), 8102 states have internal predecessors, (22714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 22714 transitions. [2021-10-13 22:36:10,366 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 22714 transitions. Word has length 67 [2021-10-13 22:36:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:10,366 INFO L470 AbstractCegarLoop]: Abstraction has 8103 states and 22714 transitions. [2021-10-13 22:36:10,366 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 22:36:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 22714 transitions. [2021-10-13 22:36:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:10,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:10,378 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, 1, 1] [2021-10-13 22:36:10,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:10,603 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 22:36:10,603 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1509692112, now seen corresponding path program 78 times [2021-10-13 22:36:10,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:10,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123612670] [2021-10-13 22:36:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:10,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:10,729 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 22:36:10,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:10,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123612670] [2021-10-13 22:36:10,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123612670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:10,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452524474] [2021-10-13 22:36:10,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:10,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:10,730 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 22:36:10,731 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 22:36:14,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:36:14,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:14,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:14,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:15,372 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 22:36:15,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452524474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:15,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:15,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:15,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804717476] [2021-10-13 22:36:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:15,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:15,373 INFO L87 Difference]: Start difference. First operand 8103 states and 22714 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:15,757 INFO L93 Difference]: Finished difference Result 9964 states and 26497 transitions. [2021-10-13 22:36:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:36:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:15,773 INFO L225 Difference]: With dead ends: 9964 [2021-10-13 22:36:15,773 INFO L226 Difference]: Without dead ends: 9780 [2021-10-13 22:36:15,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 406.6ms TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:36:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9780 states. [2021-10-13 22:36:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9780 to 8128. [2021-10-13 22:36:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 8127 states have (on average 2.801648824904639) internal successors, (22769), 8127 states have internal predecessors, (22769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 22769 transitions. [2021-10-13 22:36:15,909 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 22769 transitions. Word has length 67 [2021-10-13 22:36:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:15,911 INFO L470 AbstractCegarLoop]: Abstraction has 8128 states and 22769 transitions. [2021-10-13 22:36:15,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 22769 transitions. [2021-10-13 22:36:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:15,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:15,923 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, 1, 1] [2021-10-13 22:36:16,042 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 22:36:16,139 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 22:36:16,139 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:16,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1133991618, now seen corresponding path program 79 times [2021-10-13 22:36:16,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:16,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343155585] [2021-10-13 22:36:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:16,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:16,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:16,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343155585] [2021-10-13 22:36:16,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343155585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:16,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691866641] [2021-10-13 22:36:16,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:16,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:16,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:16,302 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 22:36:16,303 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 22:36:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:20,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:20,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:20,774 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 22:36:20,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691866641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:20,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:20,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:20,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860548428] [2021-10-13 22:36:20,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:20,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:20,776 INFO L87 Difference]: Start difference. First operand 8128 states and 22769 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:21,177 INFO L93 Difference]: Finished difference Result 10053 states and 26694 transitions. [2021-10-13 22:36:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:36:21,177 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:21,194 INFO L225 Difference]: With dead ends: 10053 [2021-10-13 22:36:21,194 INFO L226 Difference]: Without dead ends: 9785 [2021-10-13 22:36:21,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 443.8ms TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:36:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9785 states. [2021-10-13 22:36:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9785 to 8103. [2021-10-13 22:36:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 8102 states have (on average 2.802888175759072) internal successors, (22709), 8102 states have internal predecessors, (22709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 22709 transitions. [2021-10-13 22:36:21,384 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 22709 transitions. Word has length 67 [2021-10-13 22:36:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:21,384 INFO L470 AbstractCegarLoop]: Abstraction has 8103 states and 22709 transitions. [2021-10-13 22:36:21,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 22709 transitions. [2021-10-13 22:36:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:21,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:21,393 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, 1, 1] [2021-10-13 22:36:21,422 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 22:36:21,595 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 22:36:21,595 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1893907118, now seen corresponding path program 80 times [2021-10-13 22:36:21,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:21,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393689216] [2021-10-13 22:36:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:21,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:21,808 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 22:36:21,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:21,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393689216] [2021-10-13 22:36:21,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393689216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:21,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585556377] [2021-10-13 22:36:21,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:21,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:21,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:21,821 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 22:36:21,822 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 22:36:25,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:36:25,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:25,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:26,600 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 22:36:26,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585556377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:26,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:26,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:26,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204027732] [2021-10-13 22:36:26,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:26,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:26,601 INFO L87 Difference]: Start difference. First operand 8103 states and 22709 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:26,954 INFO L93 Difference]: Finished difference Result 9934 states and 26488 transitions. [2021-10-13 22:36:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:36:26,954 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:26,968 INFO L225 Difference]: With dead ends: 9934 [2021-10-13 22:36:26,969 INFO L226 Difference]: Without dead ends: 9710 [2021-10-13 22:36:26,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 424.4ms TimeCoverageRelationStatistics Valid=354, Invalid=978, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 22:36:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9710 states. [2021-10-13 22:36:27,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9710 to 8053. [2021-10-13 22:36:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8053 states, 8052 states have (on average 2.8066318926974665) internal successors, (22599), 8052 states have internal predecessors, (22599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 22599 transitions. [2021-10-13 22:36:27,086 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 22599 transitions. Word has length 67 [2021-10-13 22:36:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:27,087 INFO L470 AbstractCegarLoop]: Abstraction has 8053 states and 22599 transitions. [2021-10-13 22:36:27,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 22599 transitions. [2021-10-13 22:36:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:27,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:27,097 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:36:27,128 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 22:36:27,298 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 22:36:27,298 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:27,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1653608066, now seen corresponding path program 81 times [2021-10-13 22:36:27,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:27,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660747399] [2021-10-13 22:36:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:27,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:27,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:27,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660747399] [2021-10-13 22:36:27,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660747399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:27,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718006058] [2021-10-13 22:36:27,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:36:27,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:27,513 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 22:36:27,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-13 22:36:31,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 22:36:31,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:31,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:31,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:32,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718006058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:32,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:32,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:32,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147156160] [2021-10-13 22:36:32,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:32,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:32,158 INFO L87 Difference]: Start difference. First operand 8053 states and 22599 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:32,539 INFO L93 Difference]: Finished difference Result 9939 states and 26519 transitions. [2021-10-13 22:36:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:36:32,540 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:32,554 INFO L225 Difference]: With dead ends: 9939 [2021-10-13 22:36:32,555 INFO L226 Difference]: Without dead ends: 9635 [2021-10-13 22:36:32,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 445.2ms TimeCoverageRelationStatistics Valid=436, Invalid=1124, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:36:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2021-10-13 22:36:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 8253. [2021-10-13 22:36:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 2.790717401841978) internal successors, (23029), 8252 states have internal predecessors, (23029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 23029 transitions. [2021-10-13 22:36:32,666 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 23029 transitions. Word has length 67 [2021-10-13 22:36:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:32,667 INFO L470 AbstractCegarLoop]: Abstraction has 8253 states and 23029 transitions. [2021-10-13 22:36:32,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 23029 transitions. [2021-10-13 22:36:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:32,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:32,676 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, 1, 1] [2021-10-13 22:36:32,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:32,876 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 22:36:32,876 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:32,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1277907572, now seen corresponding path program 82 times [2021-10-13 22:36:32,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:32,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003983401] [2021-10-13 22:36:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:32,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:33,083 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 22:36:33,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:33,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003983401] [2021-10-13 22:36:33,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003983401] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:33,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273899371] [2021-10-13 22:36:33,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:36:33,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:33,084 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 22:36:33,085 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 22:36:37,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:36:37,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:37,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:37,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:37,767 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 22:36:37,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273899371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:37,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:37,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:37,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107173881] [2021-10-13 22:36:37,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:37,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:37,768 INFO L87 Difference]: Start difference. First operand 8253 states and 23029 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:38,206 INFO L93 Difference]: Finished difference Result 10509 states and 27707 transitions. [2021-10-13 22:36:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:36:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:38,219 INFO L225 Difference]: With dead ends: 10509 [2021-10-13 22:36:38,219 INFO L226 Difference]: Without dead ends: 10205 [2021-10-13 22:36:38,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 447.4ms TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:36:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10205 states. [2021-10-13 22:36:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10205 to 8253. [2021-10-13 22:36:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 2.790717401841978) internal successors, (23029), 8252 states have internal predecessors, (23029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 23029 transitions. [2021-10-13 22:36:38,316 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 23029 transitions. Word has length 67 [2021-10-13 22:36:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:38,316 INFO L470 AbstractCegarLoop]: Abstraction has 8253 states and 23029 transitions. [2021-10-13 22:36:38,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 23029 transitions. [2021-10-13 22:36:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:38,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:38,325 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, 1, 1] [2021-10-13 22:36:38,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-13 22:36:38,525 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 22:36:38,526 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:38,526 INFO L82 PathProgramCache]: Analyzing trace with hash 863728080, now seen corresponding path program 83 times [2021-10-13 22:36:38,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:38,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404760412] [2021-10-13 22:36:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:38,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:38,687 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 22:36:38,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:38,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404760412] [2021-10-13 22:36:38,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404760412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:38,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559827175] [2021-10-13 22:36:38,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:36:38,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:38,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:38,689 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 22:36:38,689 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 22:36:42,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 22:36:42,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:42,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:42,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:43,453 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 22:36:43,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559827175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:43,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:43,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:43,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888183130] [2021-10-13 22:36:43,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:43,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:43,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:43,454 INFO L87 Difference]: Start difference. First operand 8253 states and 23029 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:43,901 INFO L93 Difference]: Finished difference Result 10649 states and 27987 transitions. [2021-10-13 22:36:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:36:43,902 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:43,915 INFO L225 Difference]: With dead ends: 10649 [2021-10-13 22:36:43,915 INFO L226 Difference]: Without dead ends: 10345 [2021-10-13 22:36:43,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 472.5ms TimeCoverageRelationStatistics Valid=522, Invalid=1284, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:36:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10345 states. [2021-10-13 22:36:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10345 to 8428. [2021-10-13 22:36:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 2.7772635576124363) internal successors, (23404), 8427 states have internal predecessors, (23404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 23404 transitions. [2021-10-13 22:36:44,029 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 23404 transitions. Word has length 67 [2021-10-13 22:36:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:44,029 INFO L470 AbstractCegarLoop]: Abstraction has 8428 states and 23404 transitions. [2021-10-13 22:36:44,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 23404 transitions. [2021-10-13 22:36:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:44,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:44,038 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, 1, 1] [2021-10-13 22:36:44,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-10-13 22:36:44,238 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 22:36:44,239 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:44,239 INFO L82 PathProgramCache]: Analyzing trace with hash 488027586, now seen corresponding path program 84 times [2021-10-13 22:36:44,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:44,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908338765] [2021-10-13 22:36:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:44,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:44,363 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 22:36:44,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:44,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908338765] [2021-10-13 22:36:44,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908338765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:44,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712995142] [2021-10-13 22:36:44,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:36:44,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:44,364 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 22:36:44,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-13 22:36:48,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:36:48,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:36:48,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:48,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:49,056 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 22:36:49,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712995142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:49,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:49,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:49,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228580427] [2021-10-13 22:36:49,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:49,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:49,057 INFO L87 Difference]: Start difference. First operand 8428 states and 23404 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:49,498 INFO L93 Difference]: Finished difference Result 10483 states and 27613 transitions. [2021-10-13 22:36:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:36:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:49,513 INFO L225 Difference]: With dead ends: 10483 [2021-10-13 22:36:49,513 INFO L226 Difference]: Without dead ends: 10135 [2021-10-13 22:36:49,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 536.1ms TimeCoverageRelationStatistics Valid=523, Invalid=1283, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:36:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2021-10-13 22:36:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 8428. [2021-10-13 22:36:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 2.7772635576124363) internal successors, (23404), 8427 states have internal predecessors, (23404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 23404 transitions. [2021-10-13 22:36:49,619 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 23404 transitions. Word has length 67 [2021-10-13 22:36:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:49,620 INFO L470 AbstractCegarLoop]: Abstraction has 8428 states and 23404 transitions. [2021-10-13 22:36:49,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 23404 transitions. [2021-10-13 22:36:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:49,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:49,628 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, 1, 1] [2021-10-13 22:36:49,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-10-13 22:36:49,828 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 22:36:49,829 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash -889204762, now seen corresponding path program 85 times [2021-10-13 22:36:49,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:49,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696513434] [2021-10-13 22:36:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:49,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:49,954 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 22:36:49,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:49,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696513434] [2021-10-13 22:36:49,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696513434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:49,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458618882] [2021-10-13 22:36:49,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:36:49,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:49,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:49,956 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:49,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-13 22:36:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:54,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:36:54,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:36:54,755 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 22:36:54,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458618882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:54,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:36:54,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:36:54,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758067677] [2021-10-13 22:36:54,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:36:54,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:36:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:36:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:36:54,756 INFO L87 Difference]: Start difference. First operand 8428 states and 23404 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:36:55,160 INFO L93 Difference]: Finished difference Result 10478 states and 27598 transitions. [2021-10-13 22:36:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:36:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:36:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:36:55,174 INFO L225 Difference]: With dead ends: 10478 [2021-10-13 22:36:55,174 INFO L226 Difference]: Without dead ends: 10145 [2021-10-13 22:36:55,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 444.1ms TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:36:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10145 states. [2021-10-13 22:36:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10145 to 8378. [2021-10-13 22:36:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8378 states, 8377 states have (on average 2.7807090843977558) internal successors, (23294), 8377 states have internal predecessors, (23294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8378 states to 8378 states and 23294 transitions. [2021-10-13 22:36:55,295 INFO L78 Accepts]: Start accepts. Automaton has 8378 states and 23294 transitions. Word has length 67 [2021-10-13 22:36:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:36:55,295 INFO L470 AbstractCegarLoop]: Abstraction has 8378 states and 23294 transitions. [2021-10-13 22:36:55,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:36:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8378 states and 23294 transitions. [2021-10-13 22:36:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:36:55,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:36:55,304 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:36:55,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-13 22:36:55,505 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 22:36:55,505 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:36:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:36:55,505 INFO L82 PathProgramCache]: Analyzing trace with hash 946247994, now seen corresponding path program 86 times [2021-10-13 22:36:55,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:36:55,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148873747] [2021-10-13 22:36:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:36:55,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:36:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:36:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:36:55,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:36:55,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148873747] [2021-10-13 22:36:55,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148873747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:36:55,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644922644] [2021-10-13 22:36:55,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:36:55,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:36:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:36:55,759 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 22:36:55,759 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 22:37:00,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:00,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:00,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:00,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:00,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644922644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:00,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:00,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:00,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694700643] [2021-10-13 22:37:00,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:00,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:00,639 INFO L87 Difference]: Start difference. First operand 8378 states and 23294 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:01,027 INFO L93 Difference]: Finished difference Result 9797 states and 26144 transitions. [2021-10-13 22:37:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:37:01,028 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:01,041 INFO L225 Difference]: With dead ends: 9797 [2021-10-13 22:37:01,041 INFO L226 Difference]: Without dead ends: 9655 [2021-10-13 22:37:01,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 567.8ms TimeCoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2021-10-13 22:37:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 8303. [2021-10-13 22:37:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8303 states, 8302 states have (on average 2.78776198506384) internal successors, (23144), 8302 states have internal predecessors, (23144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8303 states to 8303 states and 23144 transitions. [2021-10-13 22:37:01,158 INFO L78 Accepts]: Start accepts. Automaton has 8303 states and 23144 transitions. Word has length 67 [2021-10-13 22:37:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:01,158 INFO L470 AbstractCegarLoop]: Abstraction has 8303 states and 23144 transitions. [2021-10-13 22:37:01,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8303 states and 23144 transitions. [2021-10-13 22:37:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:01,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:01,167 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, 1, 1] [2021-10-13 22:37:01,197 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 22:37:01,367 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 22:37:01,367 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash -858321184, now seen corresponding path program 87 times [2021-10-13 22:37:01,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:01,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796709374] [2021-10-13 22:37:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:01,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:01,557 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 22:37:01,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:01,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796709374] [2021-10-13 22:37:01,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796709374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:01,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941945596] [2021-10-13 22:37:01,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:01,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:01,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:01,558 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 22:37:01,559 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 22:37:05,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:37:05,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:05,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:06,393 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 22:37:06,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941945596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:06,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:06,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:06,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637303027] [2021-10-13 22:37:06,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:06,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:06,394 INFO L87 Difference]: Start difference. First operand 8303 states and 23144 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:06,794 INFO L93 Difference]: Finished difference Result 10099 states and 26887 transitions. [2021-10-13 22:37:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 22:37:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:06,808 INFO L225 Difference]: With dead ends: 10099 [2021-10-13 22:37:06,808 INFO L226 Difference]: Without dead ends: 9795 [2021-10-13 22:37:06,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 451.6ms TimeCoverageRelationStatistics Valid=386, Invalid=1020, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2021-10-13 22:37:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 8278. [2021-10-13 22:37:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8278 states, 8277 states have (on average 2.789537271958439) internal successors, (23089), 8277 states have internal predecessors, (23089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8278 states to 8278 states and 23089 transitions. [2021-10-13 22:37:06,997 INFO L78 Accepts]: Start accepts. Automaton has 8278 states and 23089 transitions. Word has length 67 [2021-10-13 22:37:06,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:06,998 INFO L470 AbstractCegarLoop]: Abstraction has 8278 states and 23089 transitions. [2021-10-13 22:37:06,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 8278 states and 23089 transitions. [2021-10-13 22:37:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:07,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:07,006 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, 1, 1] [2021-10-13 22:37:07,040 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 22:37:07,216 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 22:37:07,216 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:07,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:07,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1648201170, now seen corresponding path program 88 times [2021-10-13 22:37:07,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:07,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504007195] [2021-10-13 22:37:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:07,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:07,346 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 22:37:07,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:07,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504007195] [2021-10-13 22:37:07,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504007195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:07,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162895182] [2021-10-13 22:37:07,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:07,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:07,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:07,347 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 22:37:07,348 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 22:37:11,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:11,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:11,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:11,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:12,345 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 22:37:12,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162895182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:12,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:12,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:12,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977557041] [2021-10-13 22:37:12,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:12,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:12,347 INFO L87 Difference]: Start difference. First operand 8278 states and 23089 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:12,797 INFO L93 Difference]: Finished difference Result 10058 states and 26763 transitions. [2021-10-13 22:37:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:37:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:12,816 INFO L225 Difference]: With dead ends: 10058 [2021-10-13 22:37:12,817 INFO L226 Difference]: Without dead ends: 9695 [2021-10-13 22:37:12,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 483.6ms TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9695 states. [2021-10-13 22:37:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9695 to 8228. [2021-10-13 22:37:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 8227 states have (on average 2.7925124589765407) internal successors, (22974), 8227 states have internal predecessors, (22974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 22974 transitions. [2021-10-13 22:37:12,954 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 22974 transitions. Word has length 67 [2021-10-13 22:37:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:12,954 INFO L470 AbstractCegarLoop]: Abstraction has 8228 states and 22974 transitions. [2021-10-13 22:37:12,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 22974 transitions. [2021-10-13 22:37:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:12,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:12,964 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, 1, 1] [2021-10-13 22:37:12,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:13,164 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 22:37:13,165 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:13,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1982553662, now seen corresponding path program 89 times [2021-10-13 22:37:13,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:13,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567632993] [2021-10-13 22:37:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:13,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:13,323 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 22:37:13,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:13,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567632993] [2021-10-13 22:37:13,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567632993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:13,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759399693] [2021-10-13 22:37:13,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:13,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:13,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:13,325 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 22:37:13,325 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 22:37:17,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:37:17,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:17,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:17,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:18,330 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 22:37:18,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759399693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:18,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:18,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:18,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857477425] [2021-10-13 22:37:18,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:18,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:18,332 INFO L87 Difference]: Start difference. First operand 8228 states and 22974 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:18,645 INFO L93 Difference]: Finished difference Result 9694 states and 26003 transitions. [2021-10-13 22:37:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:37:18,645 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:18,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:18,658 INFO L225 Difference]: With dead ends: 9694 [2021-10-13 22:37:18,658 INFO L226 Difference]: Without dead ends: 9470 [2021-10-13 22:37:18,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 382.7ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 22:37:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2021-10-13 22:37:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 8128. [2021-10-13 22:37:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 8127 states have (on average 2.799803125384521) internal successors, (22754), 8127 states have internal predecessors, (22754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 22754 transitions. [2021-10-13 22:37:18,763 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 22754 transitions. Word has length 67 [2021-10-13 22:37:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:18,763 INFO L470 AbstractCegarLoop]: Abstraction has 8128 states and 22754 transitions. [2021-10-13 22:37:18,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 22754 transitions. [2021-10-13 22:37:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:18,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:18,772 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:37:18,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-13 22:37:18,972 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 22:37:18,972 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:18,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1733536500, now seen corresponding path program 90 times [2021-10-13 22:37:18,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:18,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006020106] [2021-10-13 22:37:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:18,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:19,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:19,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006020106] [2021-10-13 22:37:19,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006020106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:19,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832687359] [2021-10-13 22:37:19,127 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:19,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:19,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:19,128 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 22:37:19,129 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 22:37:23,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:37:23,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:23,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:24,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832687359] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:24,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:24,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:24,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118878614] [2021-10-13 22:37:24,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:24,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:24,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:24,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:24,209 INFO L87 Difference]: Start difference. First operand 8128 states and 22754 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:24,447 INFO L93 Difference]: Finished difference Result 10092 states and 26709 transitions. [2021-10-13 22:37:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 22:37:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:24,460 INFO L225 Difference]: With dead ends: 10092 [2021-10-13 22:37:24,460 INFO L226 Difference]: Without dead ends: 9965 [2021-10-13 22:37:24,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 294.6ms TimeCoverageRelationStatistics Valid=291, Invalid=765, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 22:37:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2021-10-13 22:37:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 8178. [2021-10-13 22:37:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 8177 states have (on average 2.794912559618442) internal successors, (22854), 8177 states have internal predecessors, (22854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 22854 transitions. [2021-10-13 22:37:24,626 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 22854 transitions. Word has length 67 [2021-10-13 22:37:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:24,626 INFO L470 AbstractCegarLoop]: Abstraction has 8178 states and 22854 transitions. [2021-10-13 22:37:24,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 22854 transitions. [2021-10-13 22:37:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:24,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:24,634 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, 1, 1] [2021-10-13 22:37:24,664 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 22:37:24,834 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 22:37:24,834 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:24,835 INFO L82 PathProgramCache]: Analyzing trace with hash -207990376, now seen corresponding path program 91 times [2021-10-13 22:37:24,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:24,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822247742] [2021-10-13 22:37:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:24,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:24,960 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 22:37:24,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:24,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822247742] [2021-10-13 22:37:24,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822247742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:24,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354770731] [2021-10-13 22:37:24,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:37:24,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:24,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:24,961 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 22:37:24,962 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 22:37:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:29,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:30,033 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 22:37:30,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354770731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:30,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:30,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:30,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640767899] [2021-10-13 22:37:30,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:30,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:30,034 INFO L87 Difference]: Start difference. First operand 8178 states and 22854 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:30,411 INFO L93 Difference]: Finished difference Result 10604 states and 27818 transitions. [2021-10-13 22:37:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:37:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:30,426 INFO L225 Difference]: With dead ends: 10604 [2021-10-13 22:37:30,426 INFO L226 Difference]: Without dead ends: 10380 [2021-10-13 22:37:30,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 386.6ms TimeCoverageRelationStatistics Valid=366, Invalid=1040, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:30,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2021-10-13 22:37:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 8228. [2021-10-13 22:37:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 8227 states have (on average 2.790689194116932) internal successors, (22959), 8227 states have internal predecessors, (22959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 22959 transitions. [2021-10-13 22:37:30,534 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 22959 transitions. Word has length 67 [2021-10-13 22:37:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:30,534 INFO L470 AbstractCegarLoop]: Abstraction has 8228 states and 22959 transitions. [2021-10-13 22:37:30,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 22959 transitions. [2021-10-13 22:37:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:30,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:30,543 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:37:30,573 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 22:37:30,744 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 22:37:30,745 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:30,745 INFO L82 PathProgramCache]: Analyzing trace with hash -583690870, now seen corresponding path program 92 times [2021-10-13 22:37:30,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:30,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348993370] [2021-10-13 22:37:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:30,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:30,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:30,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348993370] [2021-10-13 22:37:30,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348993370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:30,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518380038] [2021-10-13 22:37:30,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:37:30,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:30,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:30,951 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 22:37:30,952 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 22:37:35,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:37:35,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:35,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:35,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:37:36,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518380038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:36,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:36,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:36,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580277850] [2021-10-13 22:37:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:36,051 INFO L87 Difference]: Start difference. First operand 8228 states and 22959 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:36,451 INFO L93 Difference]: Finished difference Result 10077 states and 26679 transitions. [2021-10-13 22:37:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 22:37:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:36,467 INFO L225 Difference]: With dead ends: 10077 [2021-10-13 22:37:36,467 INFO L226 Difference]: Without dead ends: 9950 [2021-10-13 22:37:36,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 412.7ms TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2021-10-13 22:37:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 8228. [2021-10-13 22:37:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 8227 states have (on average 2.790689194116932) internal successors, (22959), 8227 states have internal predecessors, (22959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 22959 transitions. [2021-10-13 22:37:36,615 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 22959 transitions. Word has length 67 [2021-10-13 22:37:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:36,615 INFO L470 AbstractCegarLoop]: Abstraction has 8228 states and 22959 transitions. [2021-10-13 22:37:36,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 22959 transitions. [2021-10-13 22:37:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:36,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:36,624 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, 1, 1] [2021-10-13 22:37:36,655 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 22:37:36,825 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 22:37:36,825 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2073407618, now seen corresponding path program 93 times [2021-10-13 22:37:36,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:36,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096529705] [2021-10-13 22:37:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:36,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:36,945 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 22:37:36,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:36,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096529705] [2021-10-13 22:37:36,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096529705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:36,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624064816] [2021-10-13 22:37:36,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:37:36,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:36,947 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 22:37:36,947 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 22:37:41,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:37:41,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:41,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:41,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:42,163 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 22:37:42,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624064816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:42,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:42,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:42,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353042861] [2021-10-13 22:37:42,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:42,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:42,165 INFO L87 Difference]: Start difference. First operand 8228 states and 22959 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:42,668 INFO L93 Difference]: Finished difference Result 10553 states and 27694 transitions. [2021-10-13 22:37:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 22:37:42,669 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:42,689 INFO L225 Difference]: With dead ends: 10553 [2021-10-13 22:37:42,689 INFO L226 Difference]: Without dead ends: 10300 [2021-10-13 22:37:42,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 467.2ms TimeCoverageRelationStatistics Valid=378, Invalid=1028, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 22:37:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10300 states. [2021-10-13 22:37:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10300 to 8178. [2021-10-13 22:37:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 8177 states have (on average 2.794912559618442) internal successors, (22854), 8177 states have internal predecessors, (22854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 22854 transitions. [2021-10-13 22:37:42,860 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 22854 transitions. Word has length 67 [2021-10-13 22:37:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:42,860 INFO L470 AbstractCegarLoop]: Abstraction has 8178 states and 22854 transitions. [2021-10-13 22:37:42,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:42,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 22854 transitions. [2021-10-13 22:37:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:42,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:42,873 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, 1, 1] [2021-10-13 22:37:42,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-13 22:37:43,099 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 22:37:43,099 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:43,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1492143244, now seen corresponding path program 94 times [2021-10-13 22:37:43,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:43,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563724109] [2021-10-13 22:37:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:43,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:43,345 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 22:37:43,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:43,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563724109] [2021-10-13 22:37:43,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563724109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:43,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902521510] [2021-10-13 22:37:43,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:37:43,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:43,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:43,347 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 22:37:43,389 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 22:37:48,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:37:48,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:48,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:48,495 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 22:37:48,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902521510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:48,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:48,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:48,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732807048] [2021-10-13 22:37:48,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:48,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:48,496 INFO L87 Difference]: Start difference. First operand 8178 states and 22854 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:48,955 INFO L93 Difference]: Finished difference Result 10888 states and 28472 transitions. [2021-10-13 22:37:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:37:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:48,970 INFO L225 Difference]: With dead ends: 10888 [2021-10-13 22:37:48,970 INFO L226 Difference]: Without dead ends: 10505 [2021-10-13 22:37:48,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 472.3ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:37:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10505 states. [2021-10-13 22:37:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10505 to 8278. [2021-10-13 22:37:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8278 states, 8277 states have (on average 2.787725021142926) internal successors, (23074), 8277 states have internal predecessors, (23074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8278 states to 8278 states and 23074 transitions. [2021-10-13 22:37:49,077 INFO L78 Accepts]: Start accepts. Automaton has 8278 states and 23074 transitions. Word has length 67 [2021-10-13 22:37:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:49,078 INFO L470 AbstractCegarLoop]: Abstraction has 8278 states and 23074 transitions. [2021-10-13 22:37:49,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8278 states and 23074 transitions. [2021-10-13 22:37:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:49,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:49,086 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, 1, 1] [2021-10-13 22:37:49,117 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 22:37:49,287 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 22:37:49,287 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1116442750, now seen corresponding path program 95 times [2021-10-13 22:37:49,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:49,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125015398] [2021-10-13 22:37:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:49,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:49,491 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 22:37:49,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:49,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125015398] [2021-10-13 22:37:49,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125015398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:49,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500573400] [2021-10-13 22:37:49,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:37:49,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:49,498 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 22:37:49,527 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 22:37:54,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:37:54,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:37:54,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:37:54,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:37:54,780 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 22:37:54,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500573400] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:54,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:37:54,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:37:54,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426803476] [2021-10-13 22:37:54,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:37:54,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:37:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:37:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:37:54,782 INFO L87 Difference]: Start difference. First operand 8278 states and 23074 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:37:55,217 INFO L93 Difference]: Finished difference Result 10858 states and 28333 transitions. [2021-10-13 22:37:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:37:55,218 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:37:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:37:55,231 INFO L225 Difference]: With dead ends: 10858 [2021-10-13 22:37:55,231 INFO L226 Difference]: Without dead ends: 10525 [2021-10-13 22:37:55,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 464.9ms TimeCoverageRelationStatistics Valid=463, Invalid=1259, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:37:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10525 states. [2021-10-13 22:37:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10525 to 8253. [2021-10-13 22:37:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 2.790111488124091) internal successors, (23024), 8252 states have internal predecessors, (23024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 23024 transitions. [2021-10-13 22:37:55,342 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 23024 transitions. Word has length 67 [2021-10-13 22:37:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:37:55,342 INFO L470 AbstractCegarLoop]: Abstraction has 8253 states and 23024 transitions. [2021-10-13 22:37:55,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:37:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 23024 transitions. [2021-10-13 22:37:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:37:55,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:37:55,351 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, 1, 1] [2021-10-13 22:37:55,384 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 22:37:55,552 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 22:37:55,552 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:37:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:37:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash 873533030, now seen corresponding path program 96 times [2021-10-13 22:37:55,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:37:55,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495670995] [2021-10-13 22:37:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:37:55,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:37:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:37:55,768 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 22:37:55,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:37:55,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495670995] [2021-10-13 22:37:55,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495670995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:37:55,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759924700] [2021-10-13 22:37:55,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:37:55,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:37:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:37:55,771 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 22:37:55,815 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 22:38:00,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:38:00,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:00,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:00,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:01,019 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 22:38:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759924700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:01,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:01,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:01,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585537949] [2021-10-13 22:38:01,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:01,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:01,021 INFO L87 Difference]: Start difference. First operand 8253 states and 23024 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:01,473 INFO L93 Difference]: Finished difference Result 10354 states and 27277 transitions. [2021-10-13 22:38:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 22:38:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:01,488 INFO L225 Difference]: With dead ends: 10354 [2021-10-13 22:38:01,488 INFO L226 Difference]: Without dead ends: 10170 [2021-10-13 22:38:01,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 476.0ms TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 22:38:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states. [2021-10-13 22:38:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 8278. [2021-10-13 22:38:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8278 states, 8277 states have (on average 2.788329104748097) internal successors, (23079), 8277 states have internal predecessors, (23079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8278 states to 8278 states and 23079 transitions. [2021-10-13 22:38:01,741 INFO L78 Accepts]: Start accepts. Automaton has 8278 states and 23079 transitions. Word has length 67 [2021-10-13 22:38:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:01,741 INFO L470 AbstractCegarLoop]: Abstraction has 8278 states and 23079 transitions. [2021-10-13 22:38:01,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8278 states and 23079 transitions. [2021-10-13 22:38:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:01,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:01,749 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, 1, 1] [2021-10-13 22:38:01,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:01,950 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 22:38:01,951 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:01,951 INFO L82 PathProgramCache]: Analyzing trace with hash 497832536, now seen corresponding path program 97 times [2021-10-13 22:38:01,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:01,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703312558] [2021-10-13 22:38:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:01,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:02,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:02,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703312558] [2021-10-13 22:38:02,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703312558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:02,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792931985] [2021-10-13 22:38:02,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:02,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:02,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:02,179 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 22:38:02,203 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 22:38:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:06,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:06,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:07,556 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 22:38:07,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792931985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:07,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:07,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:07,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640566575] [2021-10-13 22:38:07,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:07,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:07,557 INFO L87 Difference]: Start difference. First operand 8278 states and 23079 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:08,118 INFO L93 Difference]: Finished difference Result 10393 states and 27349 transitions. [2021-10-13 22:38:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:38:08,118 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:08,133 INFO L225 Difference]: With dead ends: 10393 [2021-10-13 22:38:08,133 INFO L226 Difference]: Without dead ends: 10125 [2021-10-13 22:38:08,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 564.9ms TimeCoverageRelationStatistics Valid=505, Invalid=1475, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:38:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2021-10-13 22:38:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 8253. [2021-10-13 22:38:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 2.7895055744062045) internal successors, (23019), 8252 states have internal predecessors, (23019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 23019 transitions. [2021-10-13 22:38:08,243 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 23019 transitions. Word has length 67 [2021-10-13 22:38:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:08,243 INFO L470 AbstractCegarLoop]: Abstraction has 8253 states and 23019 transitions. [2021-10-13 22:38:08,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 23019 transitions. [2021-10-13 22:38:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:08,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:08,252 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, 1, 1] [2021-10-13 22:38:08,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-13 22:38:08,452 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 22:38:08,452 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1257748036, now seen corresponding path program 98 times [2021-10-13 22:38:08,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:08,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369662230] [2021-10-13 22:38:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:08,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:08,652 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 22:38:08,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:08,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369662230] [2021-10-13 22:38:08,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369662230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:08,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569186527] [2021-10-13 22:38:08,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:08,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:08,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:08,655 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 22:38:08,707 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 22:38:13,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:13,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:13,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:13,975 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 22:38:13,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569186527] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:13,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:13,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:13,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255880094] [2021-10-13 22:38:13,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:13,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:13,976 INFO L87 Difference]: Start difference. First operand 8253 states and 23019 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:14,336 INFO L93 Difference]: Finished difference Result 10189 states and 26988 transitions. [2021-10-13 22:38:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:38:14,337 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:14,351 INFO L225 Difference]: With dead ends: 10189 [2021-10-13 22:38:14,351 INFO L226 Difference]: Without dead ends: 9965 [2021-10-13 22:38:14,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 388.2ms TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:38:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2021-10-13 22:38:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 8103. [2021-10-13 22:38:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 8102 states have (on average 2.8022710441866208) internal successors, (22704), 8102 states have internal predecessors, (22704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 22704 transitions. [2021-10-13 22:38:14,539 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 22704 transitions. Word has length 67 [2021-10-13 22:38:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:14,540 INFO L470 AbstractCegarLoop]: Abstraction has 8103 states and 22704 transitions. [2021-10-13 22:38:14,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 22704 transitions. [2021-10-13 22:38:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:14,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:14,600 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:38:14,633 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 22:38:14,801 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 22:38:14,801 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1661305408, now seen corresponding path program 99 times [2021-10-13 22:38:14,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:14,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731556541] [2021-10-13 22:38:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:14,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:15,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:15,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731556541] [2021-10-13 22:38:15,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731556541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:15,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340934488] [2021-10-13 22:38:15,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:15,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:15,080 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 22:38:15,082 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 22:38:19,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:38:19,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:19,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:19,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:20,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340934488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:20,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:20,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:20,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037084058] [2021-10-13 22:38:20,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:20,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:20,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:20,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:20,464 INFO L87 Difference]: Start difference. First operand 8103 states and 22704 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:20,760 INFO L93 Difference]: Finished difference Result 9917 states and 26359 transitions. [2021-10-13 22:38:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 22:38:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:20,774 INFO L225 Difference]: With dead ends: 9917 [2021-10-13 22:38:20,774 INFO L226 Difference]: Without dead ends: 9790 [2021-10-13 22:38:20,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 333.6ms TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 22:38:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9790 states. [2021-10-13 22:38:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 8128. [2021-10-13 22:38:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 8127 states have (on average 2.799803125384521) internal successors, (22754), 8127 states have internal predecessors, (22754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 22754 transitions. [2021-10-13 22:38:20,901 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 22754 transitions. Word has length 67 [2021-10-13 22:38:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:20,901 INFO L470 AbstractCegarLoop]: Abstraction has 8128 states and 22754 transitions. [2021-10-13 22:38:20,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 22754 transitions. [2021-10-13 22:38:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:20,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:20,910 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, 1, 1] [2021-10-13 22:38:20,930 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 22:38:21,111 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 22:38:21,111 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash -135759284, now seen corresponding path program 100 times [2021-10-13 22:38:21,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:21,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324393378] [2021-10-13 22:38:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:21,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:21,345 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 22:38:21,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:21,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324393378] [2021-10-13 22:38:21,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324393378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:21,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85476420] [2021-10-13 22:38:21,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:38:21,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:21,346 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 22:38:21,376 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 22:38:26,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:38:26,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:26,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:26,730 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 22:38:26,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85476420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:26,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:26,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:26,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947783624] [2021-10-13 22:38:26,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:26,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:26,731 INFO L87 Difference]: Start difference. First operand 8128 states and 22754 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:27,197 INFO L93 Difference]: Finished difference Result 10449 states and 27503 transitions. [2021-10-13 22:38:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:38:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:27,210 INFO L225 Difference]: With dead ends: 10449 [2021-10-13 22:38:27,210 INFO L226 Difference]: Without dead ends: 10225 [2021-10-13 22:38:27,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 394.9ms TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:38:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10225 states. [2021-10-13 22:38:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10225 to 8178. [2021-10-13 22:38:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 8177 states have (on average 2.7955240308181484) internal successors, (22859), 8177 states have internal predecessors, (22859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 22859 transitions. [2021-10-13 22:38:27,349 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 22859 transitions. Word has length 67 [2021-10-13 22:38:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:27,350 INFO L470 AbstractCegarLoop]: Abstraction has 8178 states and 22859 transitions. [2021-10-13 22:38:27,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 22859 transitions. [2021-10-13 22:38:27,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:27,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:27,359 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:38:27,393 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 22:38:27,559 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 22:38:27,559 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:27,560 INFO L82 PathProgramCache]: Analyzing trace with hash -511459778, now seen corresponding path program 101 times [2021-10-13 22:38:27,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:27,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892719432] [2021-10-13 22:38:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:27,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:27,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:27,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892719432] [2021-10-13 22:38:27,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892719432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:27,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777253425] [2021-10-13 22:38:27,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:38:27,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:27,835 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 22:38:27,858 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 22:38:32,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:38:32,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:32,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:32,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:33,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777253425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:33,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:33,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:33,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640891337] [2021-10-13 22:38:33,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:33,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:33,279 INFO L87 Difference]: Start difference. First operand 8178 states and 22859 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:33,666 INFO L93 Difference]: Finished difference Result 9942 states and 26399 transitions. [2021-10-13 22:38:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 22:38:33,666 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:33,681 INFO L225 Difference]: With dead ends: 9942 [2021-10-13 22:38:33,682 INFO L226 Difference]: Without dead ends: 9815 [2021-10-13 22:38:33,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 426.4ms TimeCoverageRelationStatistics Valid=391, Invalid=1091, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:38:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2021-10-13 22:38:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 8178. [2021-10-13 22:38:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 8177 states have (on average 2.7955240308181484) internal successors, (22859), 8177 states have internal predecessors, (22859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 22859 transitions. [2021-10-13 22:38:33,940 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 22859 transitions. Word has length 67 [2021-10-13 22:38:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:33,940 INFO L470 AbstractCegarLoop]: Abstraction has 8178 states and 22859 transitions. [2021-10-13 22:38:33,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 22859 transitions. [2021-10-13 22:38:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:33,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:33,947 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, 1, 1] [2021-10-13 22:38:33,979 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 22:38:34,148 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 22:38:34,148 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2001176526, now seen corresponding path program 102 times [2021-10-13 22:38:34,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:34,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333252065] [2021-10-13 22:38:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:34,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:34,343 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 22:38:34,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:34,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333252065] [2021-10-13 22:38:34,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333252065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:34,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027209512] [2021-10-13 22:38:34,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:38:34,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:34,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:34,345 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 22:38:34,387 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 22:38:39,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:38:39,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:39,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:39,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:39,941 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 22:38:39,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027209512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:39,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:39,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:39,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341951014] [2021-10-13 22:38:39,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:39,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:39,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:39,943 INFO L87 Difference]: Start difference. First operand 8178 states and 22859 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:40,478 INFO L93 Difference]: Finished difference Result 10413 states and 27404 transitions. [2021-10-13 22:38:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:38:40,478 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:40,491 INFO L225 Difference]: With dead ends: 10413 [2021-10-13 22:38:40,491 INFO L226 Difference]: Without dead ends: 10160 [2021-10-13 22:38:40,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 509.3ms TimeCoverageRelationStatistics Valid=384, Invalid=1098, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:38:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10160 states. [2021-10-13 22:38:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10160 to 8128. [2021-10-13 22:38:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 8127 states have (on average 2.799803125384521) internal successors, (22754), 8127 states have internal predecessors, (22754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 22754 transitions. [2021-10-13 22:38:40,591 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 22754 transitions. Word has length 67 [2021-10-13 22:38:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:40,591 INFO L470 AbstractCegarLoop]: Abstraction has 8128 states and 22754 transitions. [2021-10-13 22:38:40,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 22754 transitions. [2021-10-13 22:38:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:40,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:40,600 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:38:40,632 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 22:38:40,800 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 22:38:40,800 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1971669876, now seen corresponding path program 103 times [2021-10-13 22:38:40,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:40,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598918144] [2021-10-13 22:38:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:40,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:41,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:41,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598918144] [2021-10-13 22:38:41,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598918144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:41,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402987047] [2021-10-13 22:38:41,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:38:41,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:41,015 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 22:38:41,016 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 22:38:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:46,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402987047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:46,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:46,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:46,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270612890] [2021-10-13 22:38:46,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:46,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:46,597 INFO L87 Difference]: Start difference. First operand 8128 states and 22754 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:46,879 INFO L93 Difference]: Finished difference Result 9802 states and 26124 transitions. [2021-10-13 22:38:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 22:38:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:46,893 INFO L225 Difference]: With dead ends: 9802 [2021-10-13 22:38:46,893 INFO L226 Difference]: Without dead ends: 9675 [2021-10-13 22:38:46,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 309.8ms TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 22:38:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9675 states. [2021-10-13 22:38:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9675 to 8103. [2021-10-13 22:38:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 8102 states have (on average 2.8022710441866208) internal successors, (22704), 8102 states have internal predecessors, (22704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 22704 transitions. [2021-10-13 22:38:47,133 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 22704 transitions. Word has length 67 [2021-10-13 22:38:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:47,134 INFO L470 AbstractCegarLoop]: Abstraction has 8103 states and 22704 transitions. [2021-10-13 22:38:47,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:47,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 22704 transitions. [2021-10-13 22:38:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:47,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:47,141 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:38:47,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2021-10-13 22:38:47,341 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 22:38:47,342 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1323792514, now seen corresponding path program 104 times [2021-10-13 22:38:47,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:47,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154360376] [2021-10-13 22:38:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:47,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:47,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:47,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154360376] [2021-10-13 22:38:47,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154360376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:47,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961300844] [2021-10-13 22:38:47,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:38:47,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:47,538 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 22:38:47,566 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 22:38:52,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:38:52,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:52,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:38:52,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:38:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:53,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961300844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:53,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:38:53,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:38:53,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201173760] [2021-10-13 22:38:53,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:38:53,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:38:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:38:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:38:53,224 INFO L87 Difference]: Start difference. First operand 8103 states and 22704 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:38:53,712 INFO L93 Difference]: Finished difference Result 11707 states and 30509 transitions. [2021-10-13 22:38:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:38:53,712 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:38:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:38:53,768 INFO L225 Difference]: With dead ends: 11707 [2021-10-13 22:38:53,769 INFO L226 Difference]: Without dead ends: 11580 [2021-10-13 22:38:53,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 415.7ms TimeCoverageRelationStatistics Valid=382, Invalid=1100, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 22:38:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11580 states. [2021-10-13 22:38:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 8153. [2021-10-13 22:38:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 8152 states have (on average 2.8083905789990187) internal successors, (22894), 8152 states have internal predecessors, (22894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 22894 transitions. [2021-10-13 22:38:53,880 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 22894 transitions. Word has length 67 [2021-10-13 22:38:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:38:53,880 INFO L470 AbstractCegarLoop]: Abstraction has 8153 states and 22894 transitions. [2021-10-13 22:38:53,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:38:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 22894 transitions. [2021-10-13 22:38:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:38:53,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:38:53,889 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:38:53,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2021-10-13 22:38:54,089 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 22:38:54,090 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:38:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:38:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1845120964, now seen corresponding path program 105 times [2021-10-13 22:38:54,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:38:54,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414178477] [2021-10-13 22:38:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:38:54,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:38:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:38:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:38:54,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:38:54,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414178477] [2021-10-13 22:38:54,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414178477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:38:54,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643328511] [2021-10-13 22:38:54,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:38:54,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:38:54,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:38:54,319 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 22:38:54,319 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 22:38:59,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 22:38:59,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:38:59,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 22:38:59,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:00,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643328511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:00,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:00,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:00,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068788002] [2021-10-13 22:39:00,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:00,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:00,049 INFO L87 Difference]: Start difference. First operand 8153 states and 22894 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:00,674 INFO L93 Difference]: Finished difference Result 12407 states and 33004 transitions. [2021-10-13 22:39:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 22:39:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:00,691 INFO L225 Difference]: With dead ends: 12407 [2021-10-13 22:39:00,691 INFO L226 Difference]: Without dead ends: 12280 [2021-10-13 22:39:00,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 634.7ms TimeCoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 22:39:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2021-10-13 22:39:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 8273. [2021-10-13 22:39:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8273 states, 8272 states have (on average 2.8111702127659575) internal successors, (23254), 8272 states have internal predecessors, (23254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8273 states to 8273 states and 23254 transitions. [2021-10-13 22:39:00,858 INFO L78 Accepts]: Start accepts. Automaton has 8273 states and 23254 transitions. Word has length 67 [2021-10-13 22:39:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:00,858 INFO L470 AbstractCegarLoop]: Abstraction has 8273 states and 23254 transitions. [2021-10-13 22:39:00,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8273 states and 23254 transitions. [2021-10-13 22:39:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:00,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:00,868 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:39:00,901 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 22:39:01,068 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 22:39:01,068 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1790273592, now seen corresponding path program 106 times [2021-10-13 22:39:01,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:01,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547645906] [2021-10-13 22:39:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:01,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:01,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:01,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547645906] [2021-10-13 22:39:01,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547645906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:01,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234290518] [2021-10-13 22:39:01,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:01,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:01,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:01,293 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 22:39:01,320 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 22:39:06,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:06,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:06,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:06,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:06,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234290518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:06,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:06,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:06,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859424328] [2021-10-13 22:39:06,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:06,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:06,969 INFO L87 Difference]: Start difference. First operand 8273 states and 23254 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:07,779 INFO L93 Difference]: Finished difference Result 16782 states and 44270 transitions. [2021-10-13 22:39:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 22:39:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:07,801 INFO L225 Difference]: With dead ends: 16782 [2021-10-13 22:39:07,802 INFO L226 Difference]: Without dead ends: 15915 [2021-10-13 22:39:07,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 668.4ms TimeCoverageRelationStatistics Valid=706, Invalid=2264, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 22:39:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15915 states. [2021-10-13 22:39:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15915 to 8078. [2021-10-13 22:39:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8078 states, 8077 states have (on average 2.8047542404358055) internal successors, (22654), 8077 states have internal predecessors, (22654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8078 states to 8078 states and 22654 transitions. [2021-10-13 22:39:07,982 INFO L78 Accepts]: Start accepts. Automaton has 8078 states and 22654 transitions. Word has length 67 [2021-10-13 22:39:07,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:07,983 INFO L470 AbstractCegarLoop]: Abstraction has 8078 states and 22654 transitions. [2021-10-13 22:39:07,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:07,983 INFO L276 IsEmpty]: Start isEmpty. Operand 8078 states and 22654 transitions. [2021-10-13 22:39:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:07,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:07,992 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, 1, 1] [2021-10-13 22:39:08,026 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 22:39:08,192 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 22:39:08,192 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:08,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1645391514, now seen corresponding path program 107 times [2021-10-13 22:39:08,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:08,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124963363] [2021-10-13 22:39:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:08,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:08,394 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 22:39:08,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:08,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124963363] [2021-10-13 22:39:08,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124963363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:08,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285551720] [2021-10-13 22:39:08,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:39:08,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:08,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:08,396 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 22:39:08,423 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 22:39:13,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:39:13,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:13,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:13,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:14,334 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 22:39:14,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285551720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:14,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:14,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:14,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443561026] [2021-10-13 22:39:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:14,335 INFO L87 Difference]: Start difference. First operand 8078 states and 22654 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:14,852 INFO L93 Difference]: Finished difference Result 12389 states and 31853 transitions. [2021-10-13 22:39:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:39:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:14,868 INFO L225 Difference]: With dead ends: 12389 [2021-10-13 22:39:14,869 INFO L226 Difference]: Without dead ends: 12165 [2021-10-13 22:39:14,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 501.6ms TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 22:39:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12165 states. [2021-10-13 22:39:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12165 to 8378. [2021-10-13 22:39:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8378 states, 8377 states have (on average 2.8105527038319207) internal successors, (23544), 8377 states have internal predecessors, (23544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8378 states to 8378 states and 23544 transitions. [2021-10-13 22:39:14,989 INFO L78 Accepts]: Start accepts. Automaton has 8378 states and 23544 transitions. Word has length 67 [2021-10-13 22:39:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:14,989 INFO L470 AbstractCegarLoop]: Abstraction has 8378 states and 23544 transitions. [2021-10-13 22:39:14,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8378 states and 23544 transitions. [2021-10-13 22:39:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:14,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:14,998 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:39:15,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2021-10-13 22:39:15,199 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 22:39:15,199 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:15,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1269691020, now seen corresponding path program 108 times [2021-10-13 22:39:15,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:15,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225625667] [2021-10-13 22:39:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:15,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:15,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:15,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225625667] [2021-10-13 22:39:15,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225625667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:15,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747112124] [2021-10-13 22:39:15,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:15,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:15,459 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 22:39:15,459 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 22:39:20,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 22:39:20,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:21,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747112124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:21,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:21,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:21,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655336141] [2021-10-13 22:39:21,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:21,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:21,187 INFO L87 Difference]: Start difference. First operand 8378 states and 23544 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:21,739 INFO L93 Difference]: Finished difference Result 10987 states and 28894 transitions. [2021-10-13 22:39:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:39:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:21,755 INFO L225 Difference]: With dead ends: 10987 [2021-10-13 22:39:21,755 INFO L226 Difference]: Without dead ends: 10860 [2021-10-13 22:39:21,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 562.8ms TimeCoverageRelationStatistics Valid=482, Invalid=1498, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:39:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2021-10-13 22:39:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 8353. [2021-10-13 22:39:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8353 states, 8352 states have (on average 2.812978927203065) internal successors, (23494), 8352 states have internal predecessors, (23494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 23494 transitions. [2021-10-13 22:39:21,870 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 23494 transitions. Word has length 67 [2021-10-13 22:39:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:21,870 INFO L470 AbstractCegarLoop]: Abstraction has 8353 states and 23494 transitions. [2021-10-13 22:39:21,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 23494 transitions. [2021-10-13 22:39:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:21,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:21,879 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, 1, 1] [2021-10-13 22:39:21,914 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 22:39:22,080 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 22:39:22,080 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:22,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1276502926, now seen corresponding path program 109 times [2021-10-13 22:39:22,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:22,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508219141] [2021-10-13 22:39:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:22,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:22,361 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 22:39:22,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:22,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508219141] [2021-10-13 22:39:22,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508219141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:22,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342444295] [2021-10-13 22:39:22,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:39:22,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:22,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:22,367 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 22:39:22,368 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 22:39:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:27,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:27,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:28,159 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 22:39:28,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342444295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:28,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:28,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:28,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300250705] [2021-10-13 22:39:28,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:28,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:28,160 INFO L87 Difference]: Start difference. First operand 8353 states and 23494 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:28,816 INFO L93 Difference]: Finished difference Result 12979 states and 33773 transitions. [2021-10-13 22:39:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 22:39:28,817 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:28,834 INFO L225 Difference]: With dead ends: 12979 [2021-10-13 22:39:28,834 INFO L226 Difference]: Without dead ends: 12755 [2021-10-13 22:39:28,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 579.1ms TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:39:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12755 states. [2021-10-13 22:39:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12755 to 8503. [2021-10-13 22:39:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8502 states have (on average 2.8215713949658903) internal successors, (23989), 8502 states have internal predecessors, (23989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 23989 transitions. [2021-10-13 22:39:28,999 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 23989 transitions. Word has length 67 [2021-10-13 22:39:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:28,999 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 23989 transitions. [2021-10-13 22:39:28,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 23989 transitions. [2021-10-13 22:39:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:29,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:29,009 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, 1, 1] [2021-10-13 22:39:29,042 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 22:39:29,209 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 22:39:29,209 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:29,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1892410552, now seen corresponding path program 110 times [2021-10-13 22:39:29,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:29,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269592185] [2021-10-13 22:39:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:29,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:29,495 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 22:39:29,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:29,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269592185] [2021-10-13 22:39:29,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269592185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:29,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385381636] [2021-10-13 22:39:29,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:39:29,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:29,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:29,515 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 22:39:29,571 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 22:39:35,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:39:35,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:35,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:35,509 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 22:39:35,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385381636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:35,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:35,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:35,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550764448] [2021-10-13 22:39:35,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:35,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:35,510 INFO L87 Difference]: Start difference. First operand 8503 states and 23989 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:36,097 INFO L93 Difference]: Finished difference Result 13604 states and 36203 transitions. [2021-10-13 22:39:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:39:36,097 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:36,118 INFO L225 Difference]: With dead ends: 13604 [2021-10-13 22:39:36,118 INFO L226 Difference]: Without dead ends: 13380 [2021-10-13 22:39:36,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 569.4ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:39:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13380 states. [2021-10-13 22:39:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13380 to 8743. [2021-10-13 22:39:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8743 states, 8742 states have (on average 2.8299016243422557) internal successors, (24739), 8742 states have internal predecessors, (24739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8743 states to 8743 states and 24739 transitions. [2021-10-13 22:39:36,441 INFO L78 Accepts]: Start accepts. Automaton has 8743 states and 24739 transitions. Word has length 67 [2021-10-13 22:39:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:36,441 INFO L470 AbstractCegarLoop]: Abstraction has 8743 states and 24739 transitions. [2021-10-13 22:39:36,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8743 states and 24739 transitions. [2021-10-13 22:39:36,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:36,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:36,450 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, 1, 1] [2021-10-13 22:39:36,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2021-10-13 22:39:36,651 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 22:39:36,651 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1742984004, now seen corresponding path program 111 times [2021-10-13 22:39:36,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:36,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028847195] [2021-10-13 22:39:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:36,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:36,945 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 22:39:36,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:36,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028847195] [2021-10-13 22:39:36,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028847195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:36,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231574792] [2021-10-13 22:39:36,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:39:36,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:36,947 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 22:39:36,948 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 22:39:42,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:39:42,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:42,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:42,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:42,849 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 22:39:42,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231574792] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:42,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:42,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:42,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130350392] [2021-10-13 22:39:42,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:42,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:42,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:42,850 INFO L87 Difference]: Start difference. First operand 8743 states and 24739 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:43,946 INFO L93 Difference]: Finished difference Result 18909 states and 50257 transitions. [2021-10-13 22:39:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 22:39:43,947 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:43,974 INFO L225 Difference]: With dead ends: 18909 [2021-10-13 22:39:43,975 INFO L226 Difference]: Without dead ends: 17820 [2021-10-13 22:39:43,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 1039.9ms TimeCoverageRelationStatistics Valid=830, Invalid=2710, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:39:43,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17820 states. [2021-10-13 22:39:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17820 to 8511. [2021-10-13 22:39:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 8510 states have (on average 2.8138660399529964) internal successors, (23946), 8510 states have internal predecessors, (23946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 23946 transitions. [2021-10-13 22:39:44,131 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 23946 transitions. Word has length 67 [2021-10-13 22:39:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:44,132 INFO L470 AbstractCegarLoop]: Abstraction has 8511 states and 23946 transitions. [2021-10-13 22:39:44,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 23946 transitions. [2021-10-13 22:39:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:44,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:44,141 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:39:44,175 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 22:39:44,341 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 22:39:44,341 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1164370170, now seen corresponding path program 112 times [2021-10-13 22:39:44,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:44,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952930097] [2021-10-13 22:39:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:44,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:44,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:44,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952930097] [2021-10-13 22:39:44,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952930097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:44,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631771162] [2021-10-13 22:39:44,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:39:44,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:44,580 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 22:39:44,581 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 22:39:50,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:39:50,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:50,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:50,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631771162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:50,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:50,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:50,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779135664] [2021-10-13 22:39:50,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:50,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:50,627 INFO L87 Difference]: Start difference. First operand 8511 states and 23946 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:51,302 INFO L93 Difference]: Finished difference Result 12692 states and 33909 transitions. [2021-10-13 22:39:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 22:39:51,303 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:51,321 INFO L225 Difference]: With dead ends: 12692 [2021-10-13 22:39:51,321 INFO L226 Difference]: Without dead ends: 12565 [2021-10-13 22:39:51,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 639.5ms TimeCoverageRelationStatistics Valid=558, Invalid=1604, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:39:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12565 states. [2021-10-13 22:39:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12565 to 8706. [2021-10-13 22:39:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8706 states, 8705 states have (on average 2.819758759333716) internal successors, (24546), 8705 states have internal predecessors, (24546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8706 states to 8706 states and 24546 transitions. [2021-10-13 22:39:51,448 INFO L78 Accepts]: Start accepts. Automaton has 8706 states and 24546 transitions. Word has length 67 [2021-10-13 22:39:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:51,448 INFO L470 AbstractCegarLoop]: Abstraction has 8706 states and 24546 transitions. [2021-10-13 22:39:51,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 8706 states and 24546 transitions. [2021-10-13 22:39:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:51,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:51,517 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:39:51,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2021-10-13 22:39:51,717 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 22:39:51,717 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash -504797430, now seen corresponding path program 113 times [2021-10-13 22:39:51,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:51,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263469180] [2021-10-13 22:39:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:51,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:51,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:51,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263469180] [2021-10-13 22:39:51,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263469180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:51,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682255724] [2021-10-13 22:39:51,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:39:51,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:51,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:51,940 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 22:39:51,983 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 22:39:57,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-13 22:39:57,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:39:57,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:39:57,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:39:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:39:57,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682255724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:57,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:39:57,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:39:57,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555985301] [2021-10-13 22:39:57,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:39:57,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:39:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:39:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:39:57,960 INFO L87 Difference]: Start difference. First operand 8706 states and 24546 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:39:59,002 INFO L93 Difference]: Finished difference Result 16347 states and 43105 transitions. [2021-10-13 22:39:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 22:39:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:39:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:39:59,025 INFO L225 Difference]: With dead ends: 16347 [2021-10-13 22:39:59,025 INFO L226 Difference]: Without dead ends: 15480 [2021-10-13 22:39:59,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 895.5ms TimeCoverageRelationStatistics Valid=820, Invalid=2602, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 22:39:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15480 states. [2021-10-13 22:39:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15480 to 8511. [2021-10-13 22:39:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 8510 states have (on average 2.8138660399529964) internal successors, (23946), 8510 states have internal predecessors, (23946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 23946 transitions. [2021-10-13 22:39:59,162 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 23946 transitions. Word has length 67 [2021-10-13 22:39:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:39:59,162 INFO L470 AbstractCegarLoop]: Abstraction has 8511 states and 23946 transitions. [2021-10-13 22:39:59,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:39:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 23946 transitions. [2021-10-13 22:39:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:39:59,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:39:59,171 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, 1, 1] [2021-10-13 22:39:59,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2021-10-13 22:39:59,371 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 22:39:59,371 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:39:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:39:59,372 INFO L82 PathProgramCache]: Analyzing trace with hash -729326886, now seen corresponding path program 114 times [2021-10-13 22:39:59,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:39:59,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881459888] [2021-10-13 22:39:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:39:59,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:39:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:39:59,596 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 22:39:59,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:39:59,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881459888] [2021-10-13 22:39:59,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881459888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:39:59,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406251643] [2021-10-13 22:39:59,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:39:59,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:39:59,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:39:59,598 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 22:39:59,599 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 22:40:05,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:40:05,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:05,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:05,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:05,907 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 22:40:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406251643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:05,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:05,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374809960] [2021-10-13 22:40:05,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:05,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:05,924 INFO L87 Difference]: Start difference. First operand 8511 states and 23946 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:06,421 INFO L93 Difference]: Finished difference Result 11508 states and 30084 transitions. [2021-10-13 22:40:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 22:40:06,421 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:06,438 INFO L225 Difference]: With dead ends: 11508 [2021-10-13 22:40:06,438 INFO L226 Difference]: Without dead ends: 11255 [2021-10-13 22:40:06,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 478.9ms TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 22:40:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11255 states. [2021-10-13 22:40:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11255 to 8486. [2021-10-13 22:40:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8485 states have (on average 2.8162639952857984) internal successors, (23896), 8485 states have internal predecessors, (23896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 23896 transitions. [2021-10-13 22:40:06,704 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 23896 transitions. Word has length 67 [2021-10-13 22:40:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:06,704 INFO L470 AbstractCegarLoop]: Abstraction has 8486 states and 23896 transitions. [2021-10-13 22:40:06,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 23896 transitions. [2021-10-13 22:40:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:06,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:06,713 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, 1, 1] [2021-10-13 22:40:06,750 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 22:40:06,914 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 22:40:06,914 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1025104716, now seen corresponding path program 115 times [2021-10-13 22:40:06,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:06,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932389151] [2021-10-13 22:40:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:06,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:07,127 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 22:40:07,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:07,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932389151] [2021-10-13 22:40:07,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932389151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:07,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680948469] [2021-10-13 22:40:07,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:07,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:07,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:07,128 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 22:40:07,156 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 22:40:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:12,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:12,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:13,294 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 22:40:13,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680948469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:13,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:13,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:13,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450670528] [2021-10-13 22:40:13,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:13,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:13,295 INFO L87 Difference]: Start difference. First operand 8486 states and 23896 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:13,903 INFO L93 Difference]: Finished difference Result 13273 states and 34444 transitions. [2021-10-13 22:40:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 22:40:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:13,929 INFO L225 Difference]: With dead ends: 13273 [2021-10-13 22:40:13,929 INFO L226 Difference]: Without dead ends: 13020 [2021-10-13 22:40:13,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 575.2ms TimeCoverageRelationStatistics Valid=484, Invalid=1496, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 22:40:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13020 states. [2021-10-13 22:40:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13020 to 8626. [2021-10-13 22:40:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8626 states, 8625 states have (on average 2.8180869565217392) internal successors, (24306), 8625 states have internal predecessors, (24306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8626 states to 8626 states and 24306 transitions. [2021-10-13 22:40:14,235 INFO L78 Accepts]: Start accepts. Automaton has 8626 states and 24306 transitions. Word has length 67 [2021-10-13 22:40:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:14,235 INFO L470 AbstractCegarLoop]: Abstraction has 8626 states and 24306 transitions. [2021-10-13 22:40:14,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8626 states and 24306 transitions. [2021-10-13 22:40:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:14,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:14,244 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, 1, 1] [2021-10-13 22:40:14,282 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 22:40:14,444 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 22:40:14,445 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:14,445 INFO L82 PathProgramCache]: Analyzing trace with hash -100949102, now seen corresponding path program 116 times [2021-10-13 22:40:14,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:14,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226049820] [2021-10-13 22:40:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:14,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:14,657 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 22:40:14,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:14,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226049820] [2021-10-13 22:40:14,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226049820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:14,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423094213] [2021-10-13 22:40:14,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:40:14,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:14,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:14,659 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 22:40:14,687 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 22:40:20,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:40:20,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:20,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:20,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:20,929 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 22:40:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423094213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:20,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:20,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:20,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69270950] [2021-10-13 22:40:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:20,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:20,930 INFO L87 Difference]: Start difference. First operand 8626 states and 24306 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:21,660 INFO L93 Difference]: Finished difference Result 13768 states and 36874 transitions. [2021-10-13 22:40:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 22:40:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:21,682 INFO L225 Difference]: With dead ends: 13768 [2021-10-13 22:40:21,682 INFO L226 Difference]: Without dead ends: 13545 [2021-10-13 22:40:21,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 684.1ms TimeCoverageRelationStatistics Valid=526, Invalid=1544, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 22:40:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2021-10-13 22:40:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 8866. [2021-10-13 22:40:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 8865 states have (on average 2.824703891708968) internal successors, (25041), 8865 states have internal predecessors, (25041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 25041 transitions. [2021-10-13 22:40:21,835 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 25041 transitions. Word has length 67 [2021-10-13 22:40:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:21,835 INFO L470 AbstractCegarLoop]: Abstraction has 8866 states and 25041 transitions. [2021-10-13 22:40:21,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 25041 transitions. [2021-10-13 22:40:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:21,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:21,846 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, 1, 1] [2021-10-13 22:40:21,881 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 22:40:22,046 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 22:40:22,046 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:22,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:22,047 INFO L82 PathProgramCache]: Analyzing trace with hash 558623638, now seen corresponding path program 117 times [2021-10-13 22:40:22,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:22,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063684912] [2021-10-13 22:40:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:22,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:22,275 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 22:40:22,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:22,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063684912] [2021-10-13 22:40:22,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063684912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:22,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660353439] [2021-10-13 22:40:22,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:40:22,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:22,277 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 22:40:22,278 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 22:40:27,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:40:27,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:27,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:27,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:28,509 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 22:40:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660353439] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:28,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:28,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:28,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491581334] [2021-10-13 22:40:28,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:28,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:28,510 INFO L87 Difference]: Start difference. First operand 8866 states and 25041 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:29,657 INFO L93 Difference]: Finished difference Result 18174 states and 48283 transitions. [2021-10-13 22:40:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:40:29,658 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:29,682 INFO L225 Difference]: With dead ends: 18174 [2021-10-13 22:40:29,683 INFO L226 Difference]: Without dead ends: 17070 [2021-10-13 22:40:29,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 942.6ms TimeCoverageRelationStatistics Valid=821, Invalid=2719, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 22:40:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17070 states. [2021-10-13 22:40:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17070 to 8486. [2021-10-13 22:40:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8485 states have (on average 2.8139068945197407) internal successors, (23876), 8485 states have internal predecessors, (23876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 23876 transitions. [2021-10-13 22:40:29,833 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 23876 transitions. Word has length 67 [2021-10-13 22:40:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:29,833 INFO L470 AbstractCegarLoop]: Abstraction has 8486 states and 23876 transitions. [2021-10-13 22:40:29,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 23876 transitions. [2021-10-13 22:40:29,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:29,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:29,844 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, 1, 1] [2021-10-13 22:40:29,882 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 22:40:30,044 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 22:40:30,044 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash -98526978, now seen corresponding path program 118 times [2021-10-13 22:40:30,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:30,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383199636] [2021-10-13 22:40:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:30,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:30,296 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 22:40:30,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:30,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383199636] [2021-10-13 22:40:30,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383199636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:30,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301985830] [2021-10-13 22:40:30,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:40:30,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:30,304 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 22:40:30,331 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 22:40:35,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:40:35,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:35,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:35,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:36,452 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 22:40:36,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301985830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:36,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:36,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:36,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084589123] [2021-10-13 22:40:36,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:36,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:36,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:36,453 INFO L87 Difference]: Start difference. First operand 8486 states and 23876 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:37,146 INFO L93 Difference]: Finished difference Result 12808 states and 32837 transitions. [2021-10-13 22:40:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 22:40:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:37,164 INFO L225 Difference]: With dead ends: 12808 [2021-10-13 22:40:37,164 INFO L226 Difference]: Without dead ends: 12425 [2021-10-13 22:40:37,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 576.6ms TimeCoverageRelationStatistics Valid=591, Invalid=1959, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:40:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12425 states. [2021-10-13 22:40:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12425 to 8496. [2021-10-13 22:40:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8496 states, 8495 states have (on average 2.8150676868746323) internal successors, (23914), 8495 states have internal predecessors, (23914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8496 states to 8496 states and 23914 transitions. [2021-10-13 22:40:37,325 INFO L78 Accepts]: Start accepts. Automaton has 8496 states and 23914 transitions. Word has length 67 [2021-10-13 22:40:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:37,325 INFO L470 AbstractCegarLoop]: Abstraction has 8496 states and 23914 transitions. [2021-10-13 22:40:37,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8496 states and 23914 transitions. [2021-10-13 22:40:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:37,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:37,334 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, 1, 1] [2021-10-13 22:40:37,369 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 22:40:37,534 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 22:40:37,534 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash -474227472, now seen corresponding path program 119 times [2021-10-13 22:40:37,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:37,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230311459] [2021-10-13 22:40:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:37,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:37,750 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 22:40:37,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:37,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230311459] [2021-10-13 22:40:37,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230311459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:37,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863931947] [2021-10-13 22:40:37,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:40:37,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:37,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:37,755 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 22:40:37,771 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 22:40:43,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:40:43,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:43,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:43,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:44,007 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 22:40:44,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863931947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:44,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:44,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:44,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631889722] [2021-10-13 22:40:44,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:44,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:44,008 INFO L87 Difference]: Start difference. First operand 8496 states and 23914 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:44,519 INFO L93 Difference]: Finished difference Result 12768 states and 32718 transitions. [2021-10-13 22:40:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:40:44,520 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:44,538 INFO L225 Difference]: With dead ends: 12768 [2021-10-13 22:40:44,538 INFO L226 Difference]: Without dead ends: 12435 [2021-10-13 22:40:44,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 491.2ms TimeCoverageRelationStatistics Valid=517, Invalid=1645, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 22:40:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12435 states. [2021-10-13 22:40:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12435 to 8471. [2021-10-13 22:40:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8471 states, 8470 states have (on average 2.8174734356552538) internal successors, (23864), 8470 states have internal predecessors, (23864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 23864 transitions. [2021-10-13 22:40:44,810 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 23864 transitions. Word has length 67 [2021-10-13 22:40:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 8471 states and 23864 transitions. [2021-10-13 22:40:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 23864 transitions. [2021-10-13 22:40:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:44,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:44,818 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, 1, 1] [2021-10-13 22:40:44,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2021-10-13 22:40:45,019 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 22:40:45,019 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1485041114, now seen corresponding path program 120 times [2021-10-13 22:40:45,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:45,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079889123] [2021-10-13 22:40:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:45,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:45,238 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 22:40:45,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:45,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079889123] [2021-10-13 22:40:45,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079889123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:45,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681773554] [2021-10-13 22:40:45,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:40:45,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:45,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:45,240 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 22:40:45,241 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 22:40:51,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 22:40:51,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:40:51,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:51,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:51,646 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 22:40:51,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681773554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:51,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:51,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:51,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904153463] [2021-10-13 22:40:51,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:51,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:51,647 INFO L87 Difference]: Start difference. First operand 8471 states and 23864 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:40:52,383 INFO L93 Difference]: Finished difference Result 13188 states and 33996 transitions. [2021-10-13 22:40:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 22:40:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:40:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:40:52,403 INFO L225 Difference]: With dead ends: 13188 [2021-10-13 22:40:52,403 INFO L226 Difference]: Without dead ends: 12845 [2021-10-13 22:40:52,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 685.2ms TimeCoverageRelationStatistics Valid=744, Invalid=2336, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:40:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12845 states. [2021-10-13 22:40:52,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12845 to 8746. [2021-10-13 22:40:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8746 states, 8745 states have (on average 2.8272155517438535) internal successors, (24724), 8745 states have internal predecessors, (24724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8746 states to 8746 states and 24724 transitions. [2021-10-13 22:40:52,701 INFO L78 Accepts]: Start accepts. Automaton has 8746 states and 24724 transitions. Word has length 67 [2021-10-13 22:40:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:40:52,701 INFO L470 AbstractCegarLoop]: Abstraction has 8746 states and 24724 transitions. [2021-10-13 22:40:52,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:40:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 8746 states and 24724 transitions. [2021-10-13 22:40:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:40:52,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:40:52,711 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, 1, 1] [2021-10-13 22:40:52,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2021-10-13 22:40:52,911 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 22:40:52,911 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:40:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:40:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1860741608, now seen corresponding path program 121 times [2021-10-13 22:40:52,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:40:52,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437086457] [2021-10-13 22:40:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:40:52,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:40:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:53,135 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 22:40:53,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:40:53,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437086457] [2021-10-13 22:40:53,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437086457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:53,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436477830] [2021-10-13 22:40:53,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 22:40:53,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:40:53,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:40:53,137 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 22:40:53,138 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 22:40:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:40:59,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:40:59,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:40:59,492 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 22:40:59,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436477830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:40:59,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:40:59,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:40:59,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696949010] [2021-10-13 22:40:59,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:40:59,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:40:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:40:59,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:40:59,493 INFO L87 Difference]: Start difference. First operand 8746 states and 24724 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:00,208 INFO L93 Difference]: Finished difference Result 13488 states and 34803 transitions. [2021-10-13 22:41:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 22:41:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:00,225 INFO L225 Difference]: With dead ends: 13488 [2021-10-13 22:41:00,225 INFO L226 Difference]: Without dead ends: 13140 [2021-10-13 22:41:00,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 573.2ms TimeCoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 22:41:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13140 states. [2021-10-13 22:41:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13140 to 8966. [2021-10-13 22:41:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8966 states, 8965 states have (on average 2.830340211935304) internal successors, (25374), 8965 states have internal predecessors, (25374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8966 states to 8966 states and 25374 transitions. [2021-10-13 22:41:00,360 INFO L78 Accepts]: Start accepts. Automaton has 8966 states and 25374 transitions. Word has length 67 [2021-10-13 22:41:00,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:00,360 INFO L470 AbstractCegarLoop]: Abstraction has 8966 states and 25374 transitions. [2021-10-13 22:41:00,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 8966 states and 25374 transitions. [2021-10-13 22:41:00,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:00,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:00,371 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, 1, 1] [2021-10-13 22:41:00,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:00,571 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 22:41:00,572 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:00,572 INFO L82 PathProgramCache]: Analyzing trace with hash -111968258, now seen corresponding path program 122 times [2021-10-13 22:41:00,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:00,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265216050] [2021-10-13 22:41:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:00,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:00,870 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 22:41:00,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:00,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265216050] [2021-10-13 22:41:00,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265216050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:00,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966423039] [2021-10-13 22:41:00,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 22:41:00,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:00,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:00,871 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 22:41:00,899 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 22:41:06,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 22:41:06,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:06,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:06,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:07,202 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 22:41:07,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966423039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:07,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:07,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:07,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972391962] [2021-10-13 22:41:07,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:07,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:07,204 INFO L87 Difference]: Start difference. First operand 8966 states and 25374 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:08,025 INFO L93 Difference]: Finished difference Result 14133 states and 36777 transitions. [2021-10-13 22:41:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:41:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:08,044 INFO L225 Difference]: With dead ends: 14133 [2021-10-13 22:41:08,044 INFO L226 Difference]: Without dead ends: 13750 [2021-10-13 22:41:08,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 687.8ms TimeCoverageRelationStatistics Valid=772, Invalid=2308, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 22:41:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13750 states. [2021-10-13 22:41:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13750 to 9266. [2021-10-13 22:41:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9265 states have (on average 2.847166756610901) internal successors, (26379), 9265 states have internal predecessors, (26379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 26379 transitions. [2021-10-13 22:41:08,224 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 26379 transitions. Word has length 67 [2021-10-13 22:41:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:08,224 INFO L470 AbstractCegarLoop]: Abstraction has 9266 states and 26379 transitions. [2021-10-13 22:41:08,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 26379 transitions. [2021-10-13 22:41:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:08,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:08,235 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, 1, 1] [2021-10-13 22:41:08,271 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 22:41:08,435 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 22:41:08,436 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:08,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:08,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1238022076, now seen corresponding path program 123 times [2021-10-13 22:41:08,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:08,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503057622] [2021-10-13 22:41:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:08,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:08,662 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 22:41:08,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:08,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503057622] [2021-10-13 22:41:08,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503057622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:08,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152993426] [2021-10-13 22:41:08,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 22:41:08,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:08,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:08,667 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 22:41:08,669 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 22:41:14,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 22:41:14,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:14,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 22:41:14,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:15,363 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 22:41:15,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152993426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:15,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:15,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2021-10-13 22:41:15,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518122583] [2021-10-13 22:41:15,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 22:41:15,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 22:41:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-13 22:41:15,364 INFO L87 Difference]: Start difference. First operand 9266 states and 26379 transitions. Second operand has 21 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:16,127 INFO L93 Difference]: Finished difference Result 13624 states and 36361 transitions. [2021-10-13 22:41:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 22:41:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:16,148 INFO L225 Difference]: With dead ends: 13624 [2021-10-13 22:41:16,148 INFO L226 Difference]: Without dead ends: 13360 [2021-10-13 22:41:16,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 682.6ms TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 22:41:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13360 states. [2021-10-13 22:41:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13360 to 9506. [2021-10-13 22:41:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9506 states, 9505 states have (on average 2.8541820094687007) internal successors, (27129), 9505 states have internal predecessors, (27129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9506 states to 9506 states and 27129 transitions. [2021-10-13 22:41:16,290 INFO L78 Accepts]: Start accepts. Automaton has 9506 states and 27129 transitions. Word has length 67 [2021-10-13 22:41:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 9506 states and 27129 transitions. [2021-10-13 22:41:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 9506 states and 27129 transitions. [2021-10-13 22:41:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:16,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:16,301 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, 1, 1] [2021-10-13 22:41:16,337 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 22:41:16,501 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 22:41:16,502 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash -578449336, now seen corresponding path program 124 times [2021-10-13 22:41:16,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:16,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080992442] [2021-10-13 22:41:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:16,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:16,817 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 22:41:16,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:16,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080992442] [2021-10-13 22:41:16,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080992442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:16,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538304517] [2021-10-13 22:41:16,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 22:41:16,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:16,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:16,819 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 22:41:16,845 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 22:41:22,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 22:41:22,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:22,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:22,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:23,316 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 22:41:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538304517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:23,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362859119] [2021-10-13 22:41:23,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:23,317 INFO L87 Difference]: Start difference. First operand 9506 states and 27129 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:24,394 INFO L93 Difference]: Finished difference Result 20707 states and 55436 transitions. [2021-10-13 22:41:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 22:41:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:24,421 INFO L225 Difference]: With dead ends: 20707 [2021-10-13 22:41:24,422 INFO L226 Difference]: Without dead ends: 19145 [2021-10-13 22:41:24,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 899.3ms TimeCoverageRelationStatistics Valid=957, Invalid=3203, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 22:41:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19145 states. [2021-10-13 22:41:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19145 to 9091. [2021-10-13 22:41:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9091 states, 9090 states have (on average 2.828272827282728) internal successors, (25709), 9090 states have internal predecessors, (25709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9091 states to 9091 states and 25709 transitions. [2021-10-13 22:41:24,579 INFO L78 Accepts]: Start accepts. Automaton has 9091 states and 25709 transitions. Word has length 67 [2021-10-13 22:41:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:24,579 INFO L470 AbstractCegarLoop]: Abstraction has 9091 states and 25709 transitions. [2021-10-13 22:41:24,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9091 states and 25709 transitions. [2021-10-13 22:41:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:24,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:24,589 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, 1, 1] [2021-10-13 22:41:24,625 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 22:41:24,789 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 22:41:24,790 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:24,790 INFO L82 PathProgramCache]: Analyzing trace with hash 164498, now seen corresponding path program 125 times [2021-10-13 22:41:24,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:24,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746392778] [2021-10-13 22:41:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:24,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:25,040 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 22:41:25,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:25,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746392778] [2021-10-13 22:41:25,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746392778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:25,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672764991] [2021-10-13 22:41:25,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 22:41:25,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:25,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:25,042 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 22:41:25,043 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 22:41:31,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 22:41:31,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 22:41:31,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 22:41:31,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 22:41:31,491 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 22:41:31,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672764991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:31,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 22:41:31,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-13 22:41:31,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206949367] [2021-10-13 22:41:31,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 22:41:31,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:41:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 22:41:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 22:41:31,492 INFO L87 Difference]: Start difference. First operand 9091 states and 25709 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 22:41:32,330 INFO L93 Difference]: Finished difference Result 15438 states and 41478 transitions. [2021-10-13 22:41:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 22:41:32,331 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 22:41:32,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 22:41:32,352 INFO L225 Difference]: With dead ends: 15438 [2021-10-13 22:41:32,352 INFO L226 Difference]: Without dead ends: 15105 [2021-10-13 22:41:32,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 693.5ms TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 22:41:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15105 states. [2021-10-13 22:41:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15105 to 9721. [2021-10-13 22:41:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 9720 states have (on average 2.847119341563786) internal successors, (27674), 9720 states have internal predecessors, (27674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 27674 transitions. [2021-10-13 22:41:32,550 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 27674 transitions. Word has length 67 [2021-10-13 22:41:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 22:41:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 9721 states and 27674 transitions. [2021-10-13 22:41:32,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:41:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 27674 transitions. [2021-10-13 22:41:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 22:41:32,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 22:41:32,561 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, 1, 1] [2021-10-13 22:41:32,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2021-10-13 22:41:32,762 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 22:41:32,762 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 22:41:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:41:32,762 INFO L82 PathProgramCache]: Analyzing trace with hash 659737238, now seen corresponding path program 126 times [2021-10-13 22:41:32,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:41:32,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105694043] [2021-10-13 22:41:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:41:32,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:41:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:41:32,992 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 22:41:32,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:41:32,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105694043] [2021-10-13 22:41:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105694043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 22:41:32,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054748906] [2021-10-13 22:41:32,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 22:41:32,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 22:41:32,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:41:32,994 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 22:41:32,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 22:41:36,871 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 22:41:36,900 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 22:41:37,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:41:37,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2021-10-13 22:41:37,936 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 22:41:38,105 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 22:41:38,106 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 68 with TraceHistMax 4,while executing Executor. [2021-10-13 22:41:38,107 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:41:38,107 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 22:41:38,114 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:41:38,114 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:41:38,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:41:38 BasicIcfg [2021-10-13 22:41:38,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:41:38,117 INFO L168 Benchmark]: Toolchain (without parser) took 665319.05 ms. Allocated memory was 185.6 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 128.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 622.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:41:38,117 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 185.6 MB. Free memory is still 145.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:41:38,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.20 ms. Allocated memory is still 185.6 MB. Free memory was 127.8 MB in the beginning and 146.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:41:38,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.62 ms. Allocated memory is still 185.6 MB. Free memory was 146.6 MB in the beginning and 144.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:41:38,118 INFO L168 Benchmark]: Boogie Preprocessor took 33.49 ms. Allocated memory is still 185.6 MB. Free memory was 144.9 MB in the beginning and 143.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:41:38,118 INFO L168 Benchmark]: RCFGBuilder took 359.16 ms. Allocated memory is still 185.6 MB. Free memory was 143.5 MB in the beginning and 132.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:41:38,118 INFO L168 Benchmark]: TraceAbstraction took 664419.44 ms. Allocated memory was 185.6 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 131.6 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 625.8 MB. Max. memory is 8.0 GB. [2021-10-13 22:41:38,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 185.6 MB. Free memory is still 145.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 447.20 ms. Allocated memory is still 185.6 MB. Free memory was 127.8 MB in the beginning and 146.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.62 ms. Allocated memory is still 185.6 MB. Free memory was 146.6 MB in the beginning and 144.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.49 ms. Allocated memory is still 185.6 MB. Free memory was 144.9 MB in the beginning and 143.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 359.16 ms. Allocated memory is still 185.6 MB. Free memory was 143.5 MB in the beginning and 132.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 664419.44 ms. Allocated memory was 185.6 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 131.6 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 625.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 68 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 722]: 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 68 with TraceHistMax 4,while executing Executor. - TimeoutResultAtElement [Line: 721]: 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 68 with TraceHistMax 4,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 664295.1ms, OverallIterations: 162, TraceHistogramMax: 6, EmptinessCheckTime: 1064.3ms, AutomataDifference: 78443.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 91.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14643 SDtfs, 130122 SDslu, 167858 SDs, 0 SdLazy, 26948 SolverSat, 10443 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14587.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14537 GetRequests, 8295 SyntacticMatches, 48 SemanticMatches, 6194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80387 ImplicationChecksByTransitivity, 71799.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9721occurred in iteration=161, InterpolantAutomatonStates: 5087, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15931.9ms AutomataMinimizationTime, 161 MinimizatonAttempts, 431897 StatesRemovedByMinimization, 161 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1284.8ms SsaConstructionTime, 3265.0ms SatisfiabilityAnalysisTime, 84286.7ms InterpolantComputationTime, 19205 NumberOfCodeBlocks, 19201 NumberOfCodeBlocksAsserted, 592 NumberOfCheckSat, 18890 ConstructedInterpolants, 5 QuantifiedInterpolants, 157458 SizeOfPredicates, 316 NumberOfNonLiveVariables, 23571 ConjunctsInSsa, 1993 ConjunctsInUnsatCore, 315 InterpolantComputations, 8 PerfectInterpolantSequences, 103/7084 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