/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:45:41,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:45:41,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:45:41,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 10:45:41,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 10:45:41,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 10:45:41,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 10:45:41,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 10:45:41,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 10:45:41,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 10:45:41,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 10:45:41,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 10:45:41,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:45:41,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:45:41,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:45:41,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:45:41,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:45:41,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:45:41,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:45:41,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:45:41,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:45:41,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:45:41,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:45:41,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:45:41,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:45:41,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:45:41,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:45:41,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:45:41,636 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-Separate.epf [2021-06-05 10:45:41,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:45:41,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:45:41,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:45:41,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:45:41,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:45:41,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:45:41,656 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:45:41,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:45:41,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:45:41,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:45:41,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:45:41,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:45:41,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:45:41,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:45:41,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:45:41,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:45:41,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:45:41,659 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:45:41,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:45:41,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:45:41,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:45:41,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:45:41,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:45:41,919 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:45:41,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-06-05 10:45:41,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22a02271/6b3defd25e784a4da7d9d96fb8fcce91/FLAGb9c44d961 [2021-06-05 10:45:42,448 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:45:42,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-06-05 10:45:42,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22a02271/6b3defd25e784a4da7d9d96fb8fcce91/FLAGb9c44d961 [2021-06-05 10:45:42,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22a02271/6b3defd25e784a4da7d9d96fb8fcce91 [2021-06-05 10:45:42,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:45:42,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:45:42,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:45:42,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:45:42,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:45:42,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:45:42" (1/1) ... [2021-06-05 10:45:42,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679e092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:42, skipping insertion in model container [2021-06-05 10:45:42,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:45:42" (1/1) ... [2021-06-05 10:45:42,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:45:43,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:45:43,113 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2021-06-05 10:45:43,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:45:43,333 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:45:43,340 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2021-06-05 10:45:43,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:45:43,510 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:45:43,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43 WrapperNode [2021-06-05 10:45:43,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:45:43,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:45:43,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:45:43,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:45:43,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:45:43,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:45:43,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:45:43,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:45:43,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... [2021-06-05 10:45:43,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:45:43,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:45:43,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:45:43,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:45:43,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:45:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:45:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:45:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 10:45:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:45:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-05 10:45:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2021-06-05 10:45:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2021-06-05 10:45:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:45:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:45:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:45:43,647 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 10:45:43,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:45:43,952 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:45:43,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:45:43 BoogieIcfgContainer [2021-06-05 10:45:43,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:45:43,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:45:43,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:45:43,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:45:43,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:45:42" (1/3) ... [2021-06-05 10:45:43,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf8ab67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:45:43, skipping insertion in model container [2021-06-05 10:45:43,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:45:43" (2/3) ... [2021-06-05 10:45:43,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf8ab67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:45:43, skipping insertion in model container [2021-06-05 10:45:43,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:45:43" (3/3) ... [2021-06-05 10:45:43,961 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2021-06-05 10:45:43,967 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:45:43,967 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:45:43,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:45:43,967 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:45:43,991 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,992 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,993 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,994 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,995 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,996 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,996 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,996 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,996 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,996 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,997 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,998 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,998 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,999 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:43,999 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,000 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,000 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,000 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,000 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,000 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,000 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,001 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:45:44,008 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 10:45:44,022 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 10:45:44,047 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:45:44,047 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:45:44,047 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:45:44,047 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:45:44,047 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:45:44,048 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:45:44,048 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:45:44,048 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:45:44,058 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 90 transitions, 188 flow [2021-06-05 10:45:44,083 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 355 states, 353 states have (on average 2.028328611898017) internal successors, (716), 354 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 353 states have (on average 2.028328611898017) internal successors, (716), 354 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:45:44,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:44,107 INFO L521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:44,108 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:44,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1593361763, now seen corresponding path program 1 times [2021-06-05 10:45:44,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:44,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736456744] [2021-06-05 10:45:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:44,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:44,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736456744] [2021-06-05 10:45:44,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736456744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:45:44,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:45:44,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 10:45:44,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963082866] [2021-06-05 10:45:44,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 10:45:44,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:44,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 10:45:44,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 10:45:44,288 INFO L87 Difference]: Start difference. First operand has 355 states, 353 states have (on average 2.028328611898017) internal successors, (716), 354 states have internal predecessors, (716), 0 states have call successors, (0), 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 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:44,300 INFO L93 Difference]: Finished difference Result 347 states and 653 transitions. [2021-06-05 10:45:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 10:45:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 10:45:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:44,309 INFO L225 Difference]: With dead ends: 347 [2021-06-05 10:45:44,309 INFO L226 Difference]: Without dead ends: 292 [2021-06-05 10:45:44,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 10:45:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-06-05 10:45:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-06-05 10:45:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.8694158075601375) internal successors, (544), 291 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 544 transitions. [2021-06-05 10:45:44,344 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 544 transitions. Word has length 53 [2021-06-05 10:45:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:44,344 INFO L482 AbstractCegarLoop]: Abstraction has 292 states and 544 transitions. [2021-06-05 10:45:44,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 544 transitions. [2021-06-05 10:45:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:45:44,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:44,346 INFO L521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:44,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:45:44,346 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:44,347 INFO L82 PathProgramCache]: Analyzing trace with hash -436565571, now seen corresponding path program 1 times [2021-06-05 10:45:44,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:44,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645024003] [2021-06-05 10:45:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:44,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:44,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645024003] [2021-06-05 10:45:44,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645024003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:45:44,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:45:44,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 10:45:44,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729720383] [2021-06-05 10:45:44,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 10:45:44,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:44,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 10:45:44,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 10:45:44,433 INFO L87 Difference]: Start difference. First operand 292 states and 544 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:44,477 INFO L93 Difference]: Finished difference Result 432 states and 824 transitions. [2021-06-05 10:45:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 10:45:44,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 10:45:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:44,479 INFO L225 Difference]: With dead ends: 432 [2021-06-05 10:45:44,480 INFO L226 Difference]: Without dead ends: 432 [2021-06-05 10:45:44,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 10:45:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-06-05 10:45:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 306. [2021-06-05 10:45:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.8754098360655738) internal successors, (572), 305 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 572 transitions. [2021-06-05 10:45:44,501 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 572 transitions. Word has length 53 [2021-06-05 10:45:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:44,502 INFO L482 AbstractCegarLoop]: Abstraction has 306 states and 572 transitions. [2021-06-05 10:45:44,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 572 transitions. [2021-06-05 10:45:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-06-05 10:45:44,506 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:44,506 INFO L521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:44,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:45:44,506 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1947629737, now seen corresponding path program 1 times [2021-06-05 10:45:44,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:44,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282981964] [2021-06-05 10:45:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:44,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:44,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282981964] [2021-06-05 10:45:44,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282981964] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:45:44,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:45:44,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 10:45:44,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389167260] [2021-06-05 10:45:44,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 10:45:44,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 10:45:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 10:45:44,578 INFO L87 Difference]: Start difference. First operand 306 states and 572 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:44,591 INFO L93 Difference]: Finished difference Result 439 states and 838 transitions. [2021-06-05 10:45:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 10:45:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-06-05 10:45:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:44,593 INFO L225 Difference]: With dead ends: 439 [2021-06-05 10:45:44,593 INFO L226 Difference]: Without dead ends: 439 [2021-06-05 10:45:44,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 10:45:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-06-05 10:45:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 325. [2021-06-05 10:45:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.882716049382716) internal successors, (610), 324 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 610 transitions. [2021-06-05 10:45:44,605 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 610 transitions. Word has length 64 [2021-06-05 10:45:44,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:44,605 INFO L482 AbstractCegarLoop]: Abstraction has 325 states and 610 transitions. [2021-06-05 10:45:44,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 610 transitions. [2021-06-05 10:45:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-06-05 10:45:44,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:44,606 INFO L521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:44,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:45:44,606 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:44,607 INFO L82 PathProgramCache]: Analyzing trace with hash 673821708, now seen corresponding path program 1 times [2021-06-05 10:45:44,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:44,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524099311] [2021-06-05 10:45:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:44,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:44,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524099311] [2021-06-05 10:45:44,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524099311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:44,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829391117] [2021-06-05 10:45:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:44,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 10:45:44,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:44,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 10:45:44,894 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 10:45:44,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 10:45:44,896 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 10:45:44,896 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-06-05 10:45:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:44,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829391117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:45:44,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 10:45:44,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 10:45:44,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087383795] [2021-06-05 10:45:44,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 10:45:44,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 10:45:44,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:45:44,976 INFO L87 Difference]: Start difference. First operand 325 states and 610 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:44,996 INFO L93 Difference]: Finished difference Result 307 states and 565 transitions. [2021-06-05 10:45:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 10:45:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-06-05 10:45:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:45,001 INFO L225 Difference]: With dead ends: 307 [2021-06-05 10:45:45,001 INFO L226 Difference]: Without dead ends: 307 [2021-06-05 10:45:45,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:45:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-06-05 10:45:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-06-05 10:45:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.84640522875817) internal successors, (565), 306 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 565 transitions. [2021-06-05 10:45:45,023 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 565 transitions. Word has length 72 [2021-06-05 10:45:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:45,023 INFO L482 AbstractCegarLoop]: Abstraction has 307 states and 565 transitions. [2021-06-05 10:45:45,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 565 transitions. [2021-06-05 10:45:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-06-05 10:45:45,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:45,024 INFO L521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:45,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:45,229 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1055514508, now seen corresponding path program 2 times [2021-06-05 10:45:45,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:45,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740531004] [2021-06-05 10:45:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:45,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:45,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740531004] [2021-06-05 10:45:45,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740531004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:45,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662486972] [2021-06-05 10:45:45,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:45,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:45:45,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:45,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 10:45:45,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:45:45,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662486972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:45,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:45,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-05 10:45:45,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345158295] [2021-06-05 10:45:45,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:45:45,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:45,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:45:45,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:45:45,508 INFO L87 Difference]: Start difference. First operand 307 states and 565 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:45,801 INFO L93 Difference]: Finished difference Result 1009 states and 1897 transitions. [2021-06-05 10:45:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 10:45:45,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-06-05 10:45:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:45,804 INFO L225 Difference]: With dead ends: 1009 [2021-06-05 10:45:45,804 INFO L226 Difference]: Without dead ends: 1009 [2021-06-05 10:45:45,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-06-05 10:45:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-06-05 10:45:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 658. [2021-06-05 10:45:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.887366818873668) internal successors, (1240), 657 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1240 transitions. [2021-06-05 10:45:45,821 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1240 transitions. Word has length 72 [2021-06-05 10:45:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:45,822 INFO L482 AbstractCegarLoop]: Abstraction has 658 states and 1240 transitions. [2021-06-05 10:45:45,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1240 transitions. [2021-06-05 10:45:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-06-05 10:45:45,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:45,824 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:46,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:46,041 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 881659993, now seen corresponding path program 3 times [2021-06-05 10:45:46,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:46,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252043238] [2021-06-05 10:45:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 10:45:46,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:46,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252043238] [2021-06-05 10:45:46,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252043238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:46,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43215298] [2021-06-05 10:45:46,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:46,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 10:45:46,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:46,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 10:45:46,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 10:45:46,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43215298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:46,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:46,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 10:45:46,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787913024] [2021-06-05 10:45:46,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 10:45:46,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:46,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 10:45:46,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 10:45:46,339 INFO L87 Difference]: Start difference. First operand 658 states and 1240 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:46,390 INFO L93 Difference]: Finished difference Result 1046 states and 1980 transitions. [2021-06-05 10:45:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:45:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-06-05 10:45:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:46,394 INFO L225 Difference]: With dead ends: 1046 [2021-06-05 10:45:46,394 INFO L226 Difference]: Without dead ends: 1046 [2021-06-05 10:45:46,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:45:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-06-05 10:45:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 875. [2021-06-05 10:45:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.894736842105263) internal successors, (1656), 874 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1656 transitions. [2021-06-05 10:45:46,409 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1656 transitions. Word has length 91 [2021-06-05 10:45:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:46,410 INFO L482 AbstractCegarLoop]: Abstraction has 875 states and 1656 transitions. [2021-06-05 10:45:46,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1656 transitions. [2021-06-05 10:45:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-06-05 10:45:46,412 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:46,412 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:46,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:46,626 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -911400325, now seen corresponding path program 4 times [2021-06-05 10:45:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:46,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209110501] [2021-06-05 10:45:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 10:45:46,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:46,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209110501] [2021-06-05 10:45:46,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209110501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:46,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950898204] [2021-06-05 10:45:46,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:46,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:45:46,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 10:45:46,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 10:45:46,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950898204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:46,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:46,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 10:45:46,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152857465] [2021-06-05 10:45:46,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 10:45:46,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 10:45:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 10:45:46,945 INFO L87 Difference]: Start difference. First operand 875 states and 1656 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:46,992 INFO L93 Difference]: Finished difference Result 1341 states and 2534 transitions. [2021-06-05 10:45:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:45:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-06-05 10:45:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:46,995 INFO L225 Difference]: With dead ends: 1341 [2021-06-05 10:45:46,995 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 10:45:46,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:45:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 10:45:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1149. [2021-06-05 10:45:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.896341463414634) internal successors, (2177), 1148 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 2177 transitions. [2021-06-05 10:45:47,013 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 2177 transitions. Word has length 102 [2021-06-05 10:45:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:47,013 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 2177 transitions. [2021-06-05 10:45:47,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 2177 transitions. [2021-06-05 10:45:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 10:45:47,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:47,015 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:47,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:47,236 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1460877338, now seen corresponding path program 5 times [2021-06-05 10:45:47,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:47,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484136900] [2021-06-05 10:45:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 10:45:47,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:47,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484136900] [2021-06-05 10:45:47,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484136900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:47,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23627836] [2021-06-05 10:45:47,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:47,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 10:45:47,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:47,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 10:45:47,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 10:45:47,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23627836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:47,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:47,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 10:45:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493121062] [2021-06-05 10:45:47,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 10:45:47,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 10:45:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:45:47,478 INFO L87 Difference]: Start difference. First operand 1149 states and 2177 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:47,544 INFO L93 Difference]: Finished difference Result 1615 states and 3055 transitions. [2021-06-05 10:45:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 10:45:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 10:45:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:47,549 INFO L225 Difference]: With dead ends: 1615 [2021-06-05 10:45:47,549 INFO L226 Difference]: Without dead ends: 1615 [2021-06-05 10:45:47,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 10:45:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-06-05 10:45:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1423. [2021-06-05 10:45:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 1.8973277074542898) internal successors, (2698), 1422 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 2698 transitions. [2021-06-05 10:45:47,571 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 2698 transitions. Word has length 110 [2021-06-05 10:45:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:47,571 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 2698 transitions. [2021-06-05 10:45:47,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 2698 transitions. [2021-06-05 10:45:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-06-05 10:45:47,573 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:47,573 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:47,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:47,789 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:47,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:47,789 INFO L82 PathProgramCache]: Analyzing trace with hash -313404847, now seen corresponding path program 6 times [2021-06-05 10:45:47,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:47,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991187393] [2021-06-05 10:45:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 52 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 10:45:47,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:47,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991187393] [2021-06-05 10:45:47,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991187393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:47,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447991531] [2021-06-05 10:45:47,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:47,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 10:45:47,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 10:45:47,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-05 10:45:48,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447991531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:48,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:48,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 10:45:48,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316989791] [2021-06-05 10:45:48,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 10:45:48,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:48,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 10:45:48,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-05 10:45:48,175 INFO L87 Difference]: Start difference. First operand 1423 states and 2698 transitions. Second operand has 18 states, 18 states have (on average 8.777777777777779) internal successors, (158), 18 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:50,316 INFO L93 Difference]: Finished difference Result 2733 states and 5156 transitions. [2021-06-05 10:45:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-06-05 10:45:50,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.777777777777779) internal successors, (158), 18 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-06-05 10:45:50,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:50,323 INFO L225 Difference]: With dead ends: 2733 [2021-06-05 10:45:50,323 INFO L226 Difference]: Without dead ends: 2733 [2021-06-05 10:45:50,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11215 ImplicationChecksByTransitivity, 1899.5ms TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2021-06-05 10:45:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2021-06-05 10:45:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2124. [2021-06-05 10:45:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2123 states have (on average 1.8973151201130476) internal successors, (4028), 2123 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 4028 transitions. [2021-06-05 10:45:50,361 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 4028 transitions. Word has length 118 [2021-06-05 10:45:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:50,361 INFO L482 AbstractCegarLoop]: Abstraction has 2124 states and 4028 transitions. [2021-06-05 10:45:50,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 8.777777777777779) internal successors, (158), 18 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:50,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 4028 transitions. [2021-06-05 10:45:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-06-05 10:45:50,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:50,365 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:50,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:50,584 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:50,584 INFO L82 PathProgramCache]: Analyzing trace with hash 44909880, now seen corresponding path program 7 times [2021-06-05 10:45:50,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:50,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921962122] [2021-06-05 10:45:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 37 proven. 85 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 10:45:50,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:50,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921962122] [2021-06-05 10:45:50,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921962122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:50,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131301132] [2021-06-05 10:45:50,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:50,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 10:45:50,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 37 proven. 85 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 10:45:50,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131301132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:50,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:50,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 10:45:50,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859653954] [2021-06-05 10:45:50,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 10:45:50,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:50,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 10:45:50,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:45:50,899 INFO L87 Difference]: Start difference. First operand 2124 states and 4028 transitions. Second operand has 15 states, 15 states have (on average 8.866666666666667) internal successors, (133), 15 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:51,001 INFO L93 Difference]: Finished difference Result 2708 states and 5124 transitions. [2021-06-05 10:45:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 10:45:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.866666666666667) internal successors, (133), 15 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-06-05 10:45:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:51,008 INFO L225 Difference]: With dead ends: 2708 [2021-06-05 10:45:51,008 INFO L226 Difference]: Without dead ends: 2708 [2021-06-05 10:45:51,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-06-05 10:45:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2021-06-05 10:45:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2468. [2021-06-05 10:45:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.8970409404134576) internal successors, (4680), 2467 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 4680 transitions. [2021-06-05 10:45:51,046 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 4680 transitions. Word has length 137 [2021-06-05 10:45:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:51,046 INFO L482 AbstractCegarLoop]: Abstraction has 2468 states and 4680 transitions. [2021-06-05 10:45:51,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 8.866666666666667) internal successors, (133), 15 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 4680 transitions. [2021-06-05 10:45:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 10:45:51,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:51,051 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:51,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 10:45:51,261 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash -120582163, now seen corresponding path program 8 times [2021-06-05 10:45:51,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:51,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330514381] [2021-06-05 10:45:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 37 proven. 126 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 10:45:51,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:51,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330514381] [2021-06-05 10:45:51,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330514381] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:51,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006619763] [2021-06-05 10:45:51,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:51,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:45:51,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:51,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 10:45:51,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 37 proven. 126 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 10:45:51,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006619763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:51,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:51,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 10:45:51,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947523200] [2021-06-05 10:45:51,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 10:45:51,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 10:45:51,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-05 10:45:51,620 INFO L87 Difference]: Start difference. First operand 2468 states and 4680 transitions. Second operand has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:51,749 INFO L93 Difference]: Finished difference Result 3052 states and 5776 transitions. [2021-06-05 10:45:51,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 10:45:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 10:45:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:51,757 INFO L225 Difference]: With dead ends: 3052 [2021-06-05 10:45:51,757 INFO L226 Difference]: Without dead ends: 3052 [2021-06-05 10:45:51,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 160.5ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-06-05 10:45:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-06-05 10:45:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2812. [2021-06-05 10:45:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 1.896833866951263) internal successors, (5332), 2811 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 5332 transitions. [2021-06-05 10:45:51,799 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 5332 transitions. Word has length 145 [2021-06-05 10:45:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:51,800 INFO L482 AbstractCegarLoop]: Abstraction has 2812 states and 5332 transitions. [2021-06-05 10:45:51,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 5332 transitions. [2021-06-05 10:45:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-06-05 10:45:51,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:51,804 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:52,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-05 10:45:52,024 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:52,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2132060766, now seen corresponding path program 9 times [2021-06-05 10:45:52,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:52,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082460490] [2021-06-05 10:45:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 37 proven. 175 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 10:45:52,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:52,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082460490] [2021-06-05 10:45:52,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082460490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:52,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696236990] [2021-06-05 10:45:52,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:52,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 10:45:52,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:52,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 10:45:52,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-06-05 10:45:52,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696236990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:52,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:52,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2021-06-05 10:45:52,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938199015] [2021-06-05 10:45:52,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 10:45:52,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 10:45:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-06-05 10:45:52,462 INFO L87 Difference]: Start difference. First operand 2812 states and 5332 transitions. Second operand has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:45:59,221 INFO L93 Difference]: Finished difference Result 4612 states and 8698 transitions. [2021-06-05 10:45:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 323 states. [2021-06-05 10:45:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-06-05 10:45:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:45:59,233 INFO L225 Difference]: With dead ends: 4612 [2021-06-05 10:45:59,234 INFO L226 Difference]: Without dead ends: 4612 [2021-06-05 10:45:59,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51908 ImplicationChecksByTransitivity, 6181.5ms TimeCoverageRelationStatistics Valid=21496, Invalid=89726, Unknown=0, NotChecked=0, Total=111222 [2021-06-05 10:45:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2021-06-05 10:45:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 3793. [2021-06-05 10:45:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 3792 states have (on average 1.895042194092827) internal successors, (7186), 3792 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 7186 transitions. [2021-06-05 10:45:59,299 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 7186 transitions. Word has length 153 [2021-06-05 10:45:59,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:45:59,299 INFO L482 AbstractCegarLoop]: Abstraction has 3793 states and 7186 transitions. [2021-06-05 10:45:59,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 7.423076923076923) internal successors, (193), 26 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:45:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 7186 transitions. [2021-06-05 10:45:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-06-05 10:45:59,305 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:45:59,305 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:45:59,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:59,522 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:45:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:45:59,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1107497405, now seen corresponding path program 10 times [2021-06-05 10:45:59,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:45:59,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347901896] [2021-06-05 10:45:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:45:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:45:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 49 proven. 232 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-06-05 10:45:59,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:45:59,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347901896] [2021-06-05 10:45:59,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347901896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:59,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069533495] [2021-06-05 10:45:59,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:45:59,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:45:59,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:45:59,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 10:45:59,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:45:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 49 proven. 232 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-06-05 10:45:59,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069533495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:45:59,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:45:59,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-06-05 10:45:59,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9547102] [2021-06-05 10:45:59,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 10:45:59,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:45:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 10:45:59,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-06-05 10:45:59,999 INFO L87 Difference]: Start difference. First operand 3793 states and 7186 transitions. Second operand has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 21 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:00,203 INFO L93 Difference]: Finished difference Result 4495 states and 8500 transitions. [2021-06-05 10:46:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 10:46:00,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 21 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-06-05 10:46:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:00,214 INFO L225 Difference]: With dead ends: 4495 [2021-06-05 10:46:00,214 INFO L226 Difference]: Without dead ends: 4495 [2021-06-05 10:46:00,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 236.4ms TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 10:46:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2021-06-05 10:46:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 4207. [2021-06-05 10:46:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 4206 states have (on average 1.8946742748454588) internal successors, (7969), 4206 states have internal predecessors, (7969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 7969 transitions. [2021-06-05 10:46:00,279 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 7969 transitions. Word has length 172 [2021-06-05 10:46:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:00,279 INFO L482 AbstractCegarLoop]: Abstraction has 4207 states and 7969 transitions. [2021-06-05 10:46:00,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 21 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 7969 transitions. [2021-06-05 10:46:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 10:46:00,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:00,286 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:00,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:00,493 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:00,493 INFO L82 PathProgramCache]: Analyzing trace with hash 466543336, now seen corresponding path program 11 times [2021-06-05 10:46:00,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:00,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049305280] [2021-06-05 10:46:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 49 proven. 297 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-06-05 10:46:00,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:00,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049305280] [2021-06-05 10:46:00,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049305280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:00,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290526216] [2021-06-05 10:46:00,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:00,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 10:46:00,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:00,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 10:46:00,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 49 proven. 297 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-06-05 10:46:00,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290526216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:00,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:00,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 10:46:00,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711605162] [2021-06-05 10:46:00,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 10:46:00,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 10:46:00,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-05 10:46:00,884 INFO L87 Difference]: Start difference. First operand 4207 states and 7969 transitions. Second operand has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:01,101 INFO L93 Difference]: Finished difference Result 4909 states and 9283 transitions. [2021-06-05 10:46:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 10:46:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 10:46:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:01,115 INFO L225 Difference]: With dead ends: 4909 [2021-06-05 10:46:01,115 INFO L226 Difference]: Without dead ends: 4909 [2021-06-05 10:46:01,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 234.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 10:46:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2021-06-05 10:46:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4621. [2021-06-05 10:46:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4620 states have (on average 1.8943722943722943) internal successors, (8752), 4620 states have internal predecessors, (8752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 8752 transitions. [2021-06-05 10:46:01,190 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 8752 transitions. Word has length 180 [2021-06-05 10:46:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:01,190 INFO L482 AbstractCegarLoop]: Abstraction has 4621 states and 8752 transitions. [2021-06-05 10:46:01,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 8752 transitions. [2021-06-05 10:46:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-06-05 10:46:01,197 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:01,197 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:01,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 10:46:01,414 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:01,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:01,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1061660397, now seen corresponding path program 12 times [2021-06-05 10:46:01,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:01,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550462931] [2021-06-05 10:46:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 49 proven. 370 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-06-05 10:46:01,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:01,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550462931] [2021-06-05 10:46:01,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550462931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:01,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714991976] [2021-06-05 10:46:01,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:01,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 10:46:01,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:01,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 10:46:01,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-06-05 10:46:01,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714991976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:01,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:01,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2021-06-05 10:46:01,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203160231] [2021-06-05 10:46:01,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 10:46:01,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 10:46:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 10:46:01,963 INFO L87 Difference]: Start difference. First operand 4621 states and 8752 transitions. Second operand has 34 states, 34 states have (on average 6.705882352941177) internal successors, (228), 34 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:18,788 INFO L93 Difference]: Finished difference Result 6911 states and 13026 transitions. [2021-06-05 10:46:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 545 states. [2021-06-05 10:46:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.705882352941177) internal successors, (228), 34 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-06-05 10:46:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:18,797 INFO L225 Difference]: With dead ends: 6911 [2021-06-05 10:46:18,797 INFO L226 Difference]: Without dead ends: 6911 [2021-06-05 10:46:18,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151834 ImplicationChecksByTransitivity, 15777.5ms TimeCoverageRelationStatistics Valid=57699, Invalid=255341, Unknown=0, NotChecked=0, Total=313040 [2021-06-05 10:46:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2021-06-05 10:46:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 5882. [2021-06-05 10:46:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5882 states, 5881 states have (on average 1.8925352831151165) internal successors, (11130), 5881 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5882 states to 5882 states and 11130 transitions. [2021-06-05 10:46:18,872 INFO L78 Accepts]: Start accepts. Automaton has 5882 states and 11130 transitions. Word has length 188 [2021-06-05 10:46:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:18,873 INFO L482 AbstractCegarLoop]: Abstraction has 5882 states and 11130 transitions. [2021-06-05 10:46:18,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 6.705882352941177) internal successors, (228), 34 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5882 states and 11130 transitions. [2021-06-05 10:46:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-06-05 10:46:18,881 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:18,881 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:19,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 10:46:19,097 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:19,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1951609482, now seen corresponding path program 13 times [2021-06-05 10:46:19,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:19,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282847975] [2021-06-05 10:46:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 61 proven. 451 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-06-05 10:46:19,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:19,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282847975] [2021-06-05 10:46:19,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282847975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:19,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920255480] [2021-06-05 10:46:19,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:19,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 10:46:19,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 61 proven. 451 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-06-05 10:46:19,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920255480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:19,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:19,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-06-05 10:46:19,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668005897] [2021-06-05 10:46:19,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 10:46:19,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:19,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 10:46:19,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-06-05 10:46:19,603 INFO L87 Difference]: Start difference. First operand 5882 states and 11130 transitions. Second operand has 27 states, 27 states have (on average 6.703703703703703) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:19,927 INFO L93 Difference]: Finished difference Result 6702 states and 12662 transitions. [2021-06-05 10:46:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 10:46:19,928 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.703703703703703) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-06-05 10:46:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:19,936 INFO L225 Difference]: With dead ends: 6702 [2021-06-05 10:46:19,936 INFO L226 Difference]: Without dead ends: 6702 [2021-06-05 10:46:19,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 367.2ms TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 10:46:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2021-06-05 10:46:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6366. [2021-06-05 10:46:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6366 states, 6365 states have (on average 1.8922230950510606) internal successors, (12044), 6365 states have internal predecessors, (12044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 12044 transitions. [2021-06-05 10:46:20,008 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 12044 transitions. Word has length 207 [2021-06-05 10:46:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:20,008 INFO L482 AbstractCegarLoop]: Abstraction has 6366 states and 12044 transitions. [2021-06-05 10:46:20,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 6.703703703703703) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 12044 transitions. [2021-06-05 10:46:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-06-05 10:46:20,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:20,018 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:20,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-05 10:46:20,233 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:20,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:20,233 INFO L82 PathProgramCache]: Analyzing trace with hash -375008149, now seen corresponding path program 14 times [2021-06-05 10:46:20,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:20,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113170424] [2021-06-05 10:46:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 61 proven. 540 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-06-05 10:46:20,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:20,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113170424] [2021-06-05 10:46:20,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113170424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:20,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038242709] [2021-06-05 10:46:20,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:20,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:46:20,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:20,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 10:46:20,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 61 proven. 540 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-06-05 10:46:20,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038242709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:20,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:20,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 10:46:20,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269244511] [2021-06-05 10:46:20,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 10:46:20,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 10:46:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-06-05 10:46:20,846 INFO L87 Difference]: Start difference. First operand 6366 states and 12044 transitions. Second operand has 29 states, 29 states have (on average 6.517241379310345) internal successors, (189), 29 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:21,222 INFO L93 Difference]: Finished difference Result 7186 states and 13576 transitions. [2021-06-05 10:46:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 10:46:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.517241379310345) internal successors, (189), 29 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-06-05 10:46:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:21,230 INFO L225 Difference]: With dead ends: 7186 [2021-06-05 10:46:21,230 INFO L226 Difference]: Without dead ends: 7186 [2021-06-05 10:46:21,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 399.7ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 10:46:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2021-06-05 10:46:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 6850. [2021-06-05 10:46:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6850 states, 6849 states have (on average 1.8919550299313768) internal successors, (12958), 6849 states have internal predecessors, (12958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 12958 transitions. [2021-06-05 10:46:21,305 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 12958 transitions. Word has length 215 [2021-06-05 10:46:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:21,305 INFO L482 AbstractCegarLoop]: Abstraction has 6850 states and 12958 transitions. [2021-06-05 10:46:21,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 6.517241379310345) internal successors, (189), 29 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 12958 transitions. [2021-06-05 10:46:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-06-05 10:46:21,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:21,316 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:21,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:21,533 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1095297440, now seen corresponding path program 15 times [2021-06-05 10:46:21,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:21,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784352644] [2021-06-05 10:46:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 61 proven. 637 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-06-05 10:46:21,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:21,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784352644] [2021-06-05 10:46:21,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784352644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:21,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072598279] [2021-06-05 10:46:21,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:21,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 10:46:21,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:21,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 10:46:21,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2021-06-05 10:46:22,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072598279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:22,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:22,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15] total 42 [2021-06-05 10:46:22,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368215172] [2021-06-05 10:46:22,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-06-05 10:46:22,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:22,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-06-05 10:46:22,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 10:46:22,252 INFO L87 Difference]: Start difference. First operand 6850 states and 12958 transitions. Second operand has 42 states, 42 states have (on average 6.261904761904762) internal successors, (263), 42 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:57,910 INFO L93 Difference]: Finished difference Result 9630 states and 18140 transitions. [2021-06-05 10:46:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 821 states. [2021-06-05 10:46:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.261904761904762) internal successors, (263), 42 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2021-06-05 10:46:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:57,917 INFO L225 Difference]: With dead ends: 9630 [2021-06-05 10:46:57,917 INFO L226 Difference]: Without dead ends: 9630 [2021-06-05 10:46:57,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1367 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 838 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349585 ImplicationChecksByTransitivity, 33675.5ms TimeCoverageRelationStatistics Valid=125901, Invalid=578859, Unknown=0, NotChecked=0, Total=704760 [2021-06-05 10:46:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9630 states. [2021-06-05 10:46:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9630 to 8391. [2021-06-05 10:46:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8391 states, 8390 states have (on average 1.8903456495828368) internal successors, (15860), 8390 states have internal predecessors, (15860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8391 states to 8391 states and 15860 transitions. [2021-06-05 10:46:58,028 INFO L78 Accepts]: Start accepts. Automaton has 8391 states and 15860 transitions. Word has length 223 [2021-06-05 10:46:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:58,028 INFO L482 AbstractCegarLoop]: Abstraction has 8391 states and 15860 transitions. [2021-06-05 10:46:58,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 6.261904761904762) internal successors, (263), 42 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8391 states and 15860 transitions. [2021-06-05 10:46:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-06-05 10:46:58,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:58,045 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:58,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 10:46:58,261 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:58,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:58,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1919014401, now seen corresponding path program 16 times [2021-06-05 10:46:58,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:58,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791013961] [2021-06-05 10:46:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:46:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 73 proven. 742 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-06-05 10:46:58,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:46:58,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791013961] [2021-06-05 10:46:58,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791013961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:58,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459267432] [2021-06-05 10:46:58,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:58,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:46:58,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:46:58,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 10:46:58,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:46:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 73 proven. 742 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-06-05 10:46:58,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459267432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:46:58,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:46:58,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-06-05 10:46:58,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408016674] [2021-06-05 10:46:58,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 10:46:58,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:46:58,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 10:46:58,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 10:46:58,897 INFO L87 Difference]: Start difference. First operand 8391 states and 15860 transitions. Second operand has 33 states, 33 states have (on average 6.212121212121212) internal successors, (205), 33 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:46:59,354 INFO L93 Difference]: Finished difference Result 9329 states and 17610 transitions. [2021-06-05 10:46:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 10:46:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.212121212121212) internal successors, (205), 33 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2021-06-05 10:46:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:46:59,363 INFO L225 Difference]: With dead ends: 9329 [2021-06-05 10:46:59,363 INFO L226 Difference]: Without dead ends: 9329 [2021-06-05 10:46:59,363 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 522.2ms TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 10:46:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9329 states. [2021-06-05 10:46:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9329 to 8945. [2021-06-05 10:46:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8945 states, 8944 states have (on average 1.8900939177101967) internal successors, (16905), 8944 states have internal predecessors, (16905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8945 states to 8945 states and 16905 transitions. [2021-06-05 10:46:59,456 INFO L78 Accepts]: Start accepts. Automaton has 8945 states and 16905 transitions. Word has length 242 [2021-06-05 10:46:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:46:59,456 INFO L482 AbstractCegarLoop]: Abstraction has 8945 states and 16905 transitions. [2021-06-05 10:46:59,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 6.212121212121212) internal successors, (205), 33 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:46:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8945 states and 16905 transitions. [2021-06-05 10:46:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-06-05 10:46:59,468 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:46:59,469 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:46:59,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:46:59,689 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:46:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:46:59,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1596434710, now seen corresponding path program 17 times [2021-06-05 10:46:59,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:46:59,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749791782] [2021-06-05 10:46:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:46:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:47:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1093 backedges. 73 proven. 855 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-06-05 10:47:00,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:47:00,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749791782] [2021-06-05 10:47:00,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749791782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:00,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101742575] [2021-06-05 10:47:00,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:47:00,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 10:47:00,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:47:00,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 10:47:00,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:47:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1093 backedges. 73 proven. 855 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-06-05 10:47:00,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101742575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:00,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:47:00,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-05 10:47:00,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653787372] [2021-06-05 10:47:00,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 10:47:00,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:47:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 10:47:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 10:47:00,449 INFO L87 Difference]: Start difference. First operand 8945 states and 16905 transitions. Second operand has 35 states, 35 states have (on average 6.085714285714285) internal successors, (213), 35 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:47:00,976 INFO L93 Difference]: Finished difference Result 9883 states and 18655 transitions. [2021-06-05 10:47:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 10:47:00,976 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.085714285714285) internal successors, (213), 35 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2021-06-05 10:47:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:47:00,984 INFO L225 Difference]: With dead ends: 9883 [2021-06-05 10:47:00,984 INFO L226 Difference]: Without dead ends: 9883 [2021-06-05 10:47:00,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 694.6ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 10:47:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2021-06-05 10:47:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 9499. [2021-06-05 10:47:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9499 states, 9498 states have (on average 1.8898715519056644) internal successors, (17950), 9498 states have internal predecessors, (17950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9499 states to 9499 states and 17950 transitions. [2021-06-05 10:47:01,075 INFO L78 Accepts]: Start accepts. Automaton has 9499 states and 17950 transitions. Word has length 250 [2021-06-05 10:47:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:47:01,076 INFO L482 AbstractCegarLoop]: Abstraction has 9499 states and 17950 transitions. [2021-06-05 10:47:01,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.085714285714285) internal successors, (213), 35 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:47:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9499 states and 17950 transitions. [2021-06-05 10:47:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-06-05 10:47:01,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:47:01,086 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:47:01,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:47:01,305 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:47:01,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:47:01,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1208457003, now seen corresponding path program 18 times [2021-06-05 10:47:01,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:47:01,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623579898] [2021-06-05 10:47:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:47:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:47:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 73 proven. 976 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-06-05 10:47:01,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:47:01,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623579898] [2021-06-05 10:47:01,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623579898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:01,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687792567] [2021-06-05 10:47:01,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:47:01,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 10:47:01,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:47:01,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 10:47:01,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:47:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 0 proven. 254 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2021-06-05 10:47:02,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687792567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:47:02,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:47:02,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2021-06-05 10:47:02,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768508003] [2021-06-05 10:47:02,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-06-05 10:47:02,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:47:02,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-06-05 10:47:02,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 10:47:02,266 INFO L87 Difference]: Start difference. First operand 9499 states and 17950 transitions. Second operand has 50 states, 50 states have (on average 5.96) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:48:09,839 INFO L93 Difference]: Finished difference Result 12769 states and 24040 transitions. [2021-06-05 10:48:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1151 states. [2021-06-05 10:48:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.96) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2021-06-05 10:48:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:48:09,849 INFO L225 Difference]: With dead ends: 12769 [2021-06-05 10:48:09,849 INFO L226 Difference]: Without dead ends: 12769 [2021-06-05 10:48:09,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1854 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 1172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693207 ImplicationChecksByTransitivity, 63653.7ms TimeCoverageRelationStatistics Valid=240556, Invalid=1136546, Unknown=0, NotChecked=0, Total=1377102 [2021-06-05 10:48:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12769 states. [2021-06-05 10:48:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12769 to 11320. [2021-06-05 10:48:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11320 states, 11319 states have (on average 1.8885060517713579) internal successors, (21376), 11319 states have internal predecessors, (21376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 21376 transitions. [2021-06-05 10:48:10,002 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 21376 transitions. Word has length 258 [2021-06-05 10:48:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:48:10,003 INFO L482 AbstractCegarLoop]: Abstraction has 11320 states and 21376 transitions. [2021-06-05 10:48:10,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 5.96) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 21376 transitions. [2021-06-05 10:48:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-06-05 10:48:10,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:48:10,013 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:48:10,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-05 10:48:10,215 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:48:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:48:10,216 INFO L82 PathProgramCache]: Analyzing trace with hash 99810484, now seen corresponding path program 19 times [2021-06-05 10:48:10,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:48:10,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819575402] [2021-06-05 10:48:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:48:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:48:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 85 proven. 1105 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-06-05 10:48:10,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:48:10,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819575402] [2021-06-05 10:48:10,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819575402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:10,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628751230] [2021-06-05 10:48:10,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:48:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:48:10,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 10:48:10,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:48:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 85 proven. 1105 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-06-05 10:48:10,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628751230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:10,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:48:10,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 10:48:10,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792748077] [2021-06-05 10:48:10,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 10:48:10,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:48:10,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 10:48:10,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 10:48:10,960 INFO L87 Difference]: Start difference. First operand 11320 states and 21376 transitions. Second operand has 39 states, 39 states have (on average 5.871794871794871) internal successors, (229), 39 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:48:11,634 INFO L93 Difference]: Finished difference Result 12376 states and 23344 transitions. [2021-06-05 10:48:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 10:48:11,636 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.871794871794871) internal successors, (229), 39 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2021-06-05 10:48:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:48:11,648 INFO L225 Difference]: With dead ends: 12376 [2021-06-05 10:48:11,648 INFO L226 Difference]: Without dead ends: 12376 [2021-06-05 10:48:11,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 748.6ms TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 10:48:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12376 states. [2021-06-05 10:48:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12376 to 11944. [2021-06-05 10:48:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11944 states, 11943 states have (on average 1.8883027714979486) internal successors, (22552), 11943 states have internal predecessors, (22552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11944 states to 11944 states and 22552 transitions. [2021-06-05 10:48:11,765 INFO L78 Accepts]: Start accepts. Automaton has 11944 states and 22552 transitions. Word has length 277 [2021-06-05 10:48:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:48:11,765 INFO L482 AbstractCegarLoop]: Abstraction has 11944 states and 22552 transitions. [2021-06-05 10:48:11,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.871794871794871) internal successors, (229), 39 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 11944 states and 22552 transitions. [2021-06-05 10:48:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-06-05 10:48:11,776 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:48:11,776 INFO L521 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:48:11,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:48:11,977 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:48:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:48:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1815220201, now seen corresponding path program 20 times [2021-06-05 10:48:11,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:48:11,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075862056] [2021-06-05 10:48:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:48:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:48:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 85 proven. 1242 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-06-05 10:48:12,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:48:12,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075862056] [2021-06-05 10:48:12,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075862056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:12,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941007004] [2021-06-05 10:48:12,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:48:12,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:48:12,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:48:12,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 10:48:12,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:48:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 85 proven. 1242 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-06-05 10:48:12,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941007004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:12,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:48:12,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-06-05 10:48:12,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642215193] [2021-06-05 10:48:12,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 10:48:12,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:48:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 10:48:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 10:48:12,975 INFO L87 Difference]: Start difference. First operand 11944 states and 22552 transitions. Second operand has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:48:13,742 INFO L93 Difference]: Finished difference Result 13000 states and 24520 transitions. [2021-06-05 10:48:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 10:48:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2021-06-05 10:48:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:48:13,756 INFO L225 Difference]: With dead ends: 13000 [2021-06-05 10:48:13,756 INFO L226 Difference]: Without dead ends: 13000 [2021-06-05 10:48:13,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 853.4ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 10:48:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13000 states. [2021-06-05 10:48:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13000 to 12568. [2021-06-05 10:48:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12568 states, 12567 states have (on average 1.888119678523116) internal successors, (23728), 12567 states have internal predecessors, (23728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12568 states to 12568 states and 23728 transitions. [2021-06-05 10:48:13,931 INFO L78 Accepts]: Start accepts. Automaton has 12568 states and 23728 transitions. Word has length 285 [2021-06-05 10:48:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:48:13,931 INFO L482 AbstractCegarLoop]: Abstraction has 12568 states and 23728 transitions. [2021-06-05 10:48:13,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:48:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12568 states and 23728 transitions. [2021-06-05 10:48:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-06-05 10:48:13,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:48:13,945 INFO L521 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:48:14,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 10:48:14,146 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:48:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:48:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash -371646946, now seen corresponding path program 21 times [2021-06-05 10:48:14,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:48:14,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294813595] [2021-06-05 10:48:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:48:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:48:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 85 proven. 1387 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-06-05 10:48:14,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:48:14,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294813595] [2021-06-05 10:48:14,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294813595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:14,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414649076] [2021-06-05 10:48:14,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:48:14,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 10:48:14,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:48:14,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 10:48:14,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:48:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2021-06-05 10:48:15,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414649076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:48:15,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:48:15,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 19] total 58 [2021-06-05 10:48:15,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020946017] [2021-06-05 10:48:15,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-06-05 10:48:15,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:48:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-06-05 10:48:15,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2768, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 10:48:15,307 INFO L87 Difference]: Start difference. First operand 12568 states and 23728 transitions. Second operand has 58 states, 58 states have (on average 5.741379310344827) internal successors, (333), 58 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:03,559 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 10:50:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:16,254 INFO L93 Difference]: Finished difference Result 15812 states and 29784 transitions. [2021-06-05 10:50:16,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1535 states. [2021-06-05 10:50:16,254 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.741379310344827) internal successors, (333), 58 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-06-05 10:50:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:16,265 INFO L225 Difference]: With dead ends: 15812 [2021-06-05 10:50:16,266 INFO L226 Difference]: Without dead ends: 15812 [2021-06-05 10:50:16,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2413 GetRequests, 853 SyntacticMatches, 0 SemanticMatches, 1560 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240164 ImplicationChecksByTransitivity, 113471.6ms TimeCoverageRelationStatistics Valid=418764, Invalid=2019518, Unknown=0, NotChecked=0, Total=2438282 [2021-06-05 10:50:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15812 states. [2021-06-05 10:50:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15812 to 14669. [2021-06-05 10:50:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14669 states, 14668 states have (on average 1.8869648213798746) internal successors, (27678), 14668 states have internal predecessors, (27678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14669 states to 14669 states and 27678 transitions. [2021-06-05 10:50:16,509 INFO L78 Accepts]: Start accepts. Automaton has 14669 states and 27678 transitions. Word has length 293 [2021-06-05 10:50:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:16,510 INFO L482 AbstractCegarLoop]: Abstraction has 14669 states and 27678 transitions. [2021-06-05 10:50:16,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 5.741379310344827) internal successors, (333), 58 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14669 states and 27678 transitions. [2021-06-05 10:50:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-06-05 10:50:16,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:16,525 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:16,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-05 10:50:16,742 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:16,742 INFO L82 PathProgramCache]: Analyzing trace with hash 120507201, now seen corresponding path program 22 times [2021-06-05 10:50:16,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:16,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362280601] [2021-06-05 10:50:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1945 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:16,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:16,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362280601] [2021-06-05 10:50:16,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362280601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:16,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506327887] [2021-06-05 10:50:16,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:17,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:50:17,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:17,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 10:50:17,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1945 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:17,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506327887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:17,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:17,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 10:50:17,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648253826] [2021-06-05 10:50:17,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 10:50:17,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:17,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 10:50:17,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-05 10:50:17,470 INFO L87 Difference]: Start difference. First operand 14669 states and 27678 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:17,739 INFO L93 Difference]: Finished difference Result 17289 states and 32558 transitions. [2021-06-05 10:50:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 10:50:17,739 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2021-06-05 10:50:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:17,755 INFO L225 Difference]: With dead ends: 17289 [2021-06-05 10:50:17,755 INFO L226 Difference]: Without dead ends: 17289 [2021-06-05 10:50:17,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 278.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 10:50:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17289 states. [2021-06-05 10:50:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17289 to 16146. [2021-06-05 10:50:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16146 states, 16145 states have (on average 1.8861567048621863) internal successors, (30452), 16145 states have internal predecessors, (30452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16146 states to 16146 states and 30452 transitions. [2021-06-05 10:50:17,919 INFO L78 Accepts]: Start accepts. Automaton has 16146 states and 30452 transitions. Word has length 312 [2021-06-05 10:50:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:17,919 INFO L482 AbstractCegarLoop]: Abstraction has 16146 states and 30452 transitions. [2021-06-05 10:50:17,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 16146 states and 30452 transitions. [2021-06-05 10:50:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-06-05 10:50:17,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:17,934 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:18,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:18,145 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1013905773, now seen corresponding path program 23 times [2021-06-05 10:50:18,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:18,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160133898] [2021-06-05 10:50:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2045 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:18,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:18,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160133898] [2021-06-05 10:50:18,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160133898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:18,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47839785] [2021-06-05 10:50:18,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:18,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-06-05 10:50:18,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:18,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 10:50:18,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:18,789 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-05 10:50:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2045 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:19,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47839785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:19,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:19,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 10:50:19,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672859153] [2021-06-05 10:50:19,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 10:50:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:19,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 10:50:19,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-06-05 10:50:19,004 INFO L87 Difference]: Start difference. First operand 16146 states and 30452 transitions. Second operand has 25 states, 25 states have (on average 7.52) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:19,281 INFO L93 Difference]: Finished difference Result 18766 states and 35332 transitions. [2021-06-05 10:50:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 10:50:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.52) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2021-06-05 10:50:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:19,297 INFO L225 Difference]: With dead ends: 18766 [2021-06-05 10:50:19,297 INFO L226 Difference]: Without dead ends: 18766 [2021-06-05 10:50:19,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 291.2ms TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 10:50:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2021-06-05 10:50:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 17623. [2021-06-05 10:50:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17623 states, 17622 states have (on average 1.88548405402338) internal successors, (33226), 17622 states have internal predecessors, (33226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17623 states to 17623 states and 33226 transitions. [2021-06-05 10:50:19,472 INFO L78 Accepts]: Start accepts. Automaton has 17623 states and 33226 transitions. Word has length 323 [2021-06-05 10:50:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:19,472 INFO L482 AbstractCegarLoop]: Abstraction has 17623 states and 33226 transitions. [2021-06-05 10:50:19,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 7.52) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 17623 states and 33226 transitions. [2021-06-05 10:50:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-06-05 10:50:19,488 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:19,489 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:19,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 10:50:19,696 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:19,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1039328257, now seen corresponding path program 24 times [2021-06-05 10:50:19,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:19,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738168050] [2021-06-05 10:50:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 0 proven. 636 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:19,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:19,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738168050] [2021-06-05 10:50:19,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738168050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:19,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641137649] [2021-06-05 10:50:19,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:20,223 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-06-05 10:50:20,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:20,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 10:50:20,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 0 proven. 636 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:20,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641137649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:20,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:20,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-06-05 10:50:20,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370150006] [2021-06-05 10:50:20,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 10:50:20,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:20,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 10:50:20,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-06-05 10:50:20,616 INFO L87 Difference]: Start difference. First operand 17623 states and 33226 transitions. Second operand has 27 states, 27 states have (on average 7.37037037037037) internal successors, (199), 27 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:20,932 INFO L93 Difference]: Finished difference Result 20243 states and 38106 transitions. [2021-06-05 10:50:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 10:50:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.37037037037037) internal successors, (199), 27 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2021-06-05 10:50:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:20,949 INFO L225 Difference]: With dead ends: 20243 [2021-06-05 10:50:20,949 INFO L226 Difference]: Without dead ends: 20243 [2021-06-05 10:50:20,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 343.6ms TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 10:50:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20243 states. [2021-06-05 10:50:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20243 to 19100. [2021-06-05 10:50:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19100 states, 19099 states have (on average 1.8849154405989843) internal successors, (36000), 19099 states have internal predecessors, (36000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19100 states to 19100 states and 36000 transitions. [2021-06-05 10:50:21,137 INFO L78 Accepts]: Start accepts. Automaton has 19100 states and 36000 transitions. Word has length 334 [2021-06-05 10:50:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:21,137 INFO L482 AbstractCegarLoop]: Abstraction has 19100 states and 36000 transitions. [2021-06-05 10:50:21,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 7.37037037037037) internal successors, (199), 27 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 19100 states and 36000 transitions. [2021-06-05 10:50:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-06-05 10:50:21,155 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:21,155 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:21,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:21,356 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:21,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:21,356 INFO L82 PathProgramCache]: Analyzing trace with hash -687213101, now seen corresponding path program 25 times [2021-06-05 10:50:21,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:21,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207233788] [2021-06-05 10:50:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 758 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:21,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:21,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207233788] [2021-06-05 10:50:21,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207233788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:21,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373030353] [2021-06-05 10:50:21,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 10:50:21,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 758 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:22,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373030353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:22,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:22,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 10:50:22,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817220248] [2021-06-05 10:50:22,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 10:50:22,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:22,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 10:50:22,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-06-05 10:50:22,222 INFO L87 Difference]: Start difference. First operand 19100 states and 36000 transitions. Second operand has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 29 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:22,597 INFO L93 Difference]: Finished difference Result 21720 states and 40880 transitions. [2021-06-05 10:50:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 10:50:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 29 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2021-06-05 10:50:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:22,615 INFO L225 Difference]: With dead ends: 21720 [2021-06-05 10:50:22,615 INFO L226 Difference]: Without dead ends: 21720 [2021-06-05 10:50:22,616 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 463.9ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 10:50:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21720 states. [2021-06-05 10:50:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21720 to 20577. [2021-06-05 10:50:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20577 states, 20576 states have (on average 1.8844284603421462) internal successors, (38774), 20576 states have internal predecessors, (38774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20577 states to 20577 states and 38774 transitions. [2021-06-05 10:50:22,816 INFO L78 Accepts]: Start accepts. Automaton has 20577 states and 38774 transitions. Word has length 345 [2021-06-05 10:50:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:22,817 INFO L482 AbstractCegarLoop]: Abstraction has 20577 states and 38774 transitions. [2021-06-05 10:50:22,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 29 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 20577 states and 38774 transitions. [2021-06-05 10:50:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-05 10:50:22,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:22,836 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:23,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-05 10:50:23,036 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1790448447, now seen corresponding path program 26 times [2021-06-05 10:50:23,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:23,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911924533] [2021-06-05 10:50:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 0 proven. 891 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:23,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:23,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911924533] [2021-06-05 10:50:23,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911924533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:23,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234143423] [2021-06-05 10:50:23,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:23,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:50:23,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:23,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 10:50:23,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 0 proven. 891 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:23,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234143423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:23,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:23,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 10:50:23,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468054315] [2021-06-05 10:50:23,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 10:50:23,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:23,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 10:50:23,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-05 10:50:23,754 INFO L87 Difference]: Start difference. First operand 20577 states and 38774 transitions. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:24,224 INFO L93 Difference]: Finished difference Result 23197 states and 43654 transitions. [2021-06-05 10:50:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 10:50:24,225 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-06-05 10:50:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:24,242 INFO L225 Difference]: With dead ends: 23197 [2021-06-05 10:50:24,242 INFO L226 Difference]: Without dead ends: 23197 [2021-06-05 10:50:24,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 462.3ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 10:50:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2021-06-05 10:50:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 22054. [2021-06-05 10:50:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22054 states, 22053 states have (on average 1.8840067111050651) internal successors, (41548), 22053 states have internal predecessors, (41548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22054 states to 22054 states and 41548 transitions. [2021-06-05 10:50:24,464 INFO L78 Accepts]: Start accepts. Automaton has 22054 states and 41548 transitions. Word has length 356 [2021-06-05 10:50:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:24,465 INFO L482 AbstractCegarLoop]: Abstraction has 22054 states and 41548 transitions. [2021-06-05 10:50:24,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand 22054 states and 41548 transitions. [2021-06-05 10:50:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-06-05 10:50:24,486 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:24,486 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:24,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 10:50:24,701 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1526461715, now seen corresponding path program 27 times [2021-06-05 10:50:24,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:24,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16376130] [2021-06-05 10:50:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:24,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:24,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16376130] [2021-06-05 10:50:24,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16376130] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:24,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783135253] [2021-06-05 10:50:24,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:25,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 10:50:25,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:25,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 10:50:25,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:25,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783135253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:25,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:25,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-06-05 10:50:25,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810308679] [2021-06-05 10:50:25,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 10:50:25,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:25,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 10:50:25,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 10:50:25,603 INFO L87 Difference]: Start difference. First operand 22054 states and 41548 transitions. Second operand has 33 states, 33 states have (on average 7.03030303030303) internal successors, (232), 33 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:26,092 INFO L93 Difference]: Finished difference Result 24674 states and 46428 transitions. [2021-06-05 10:50:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 10:50:26,095 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.03030303030303) internal successors, (232), 33 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2021-06-05 10:50:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:26,118 INFO L225 Difference]: With dead ends: 24674 [2021-06-05 10:50:26,119 INFO L226 Difference]: Without dead ends: 24674 [2021-06-05 10:50:26,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 539.6ms TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 10:50:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24674 states. [2021-06-05 10:50:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24674 to 23531. [2021-06-05 10:50:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23531 states, 23530 states have (on average 1.8836379090522737) internal successors, (44322), 23530 states have internal predecessors, (44322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23531 states to 23531 states and 44322 transitions. [2021-06-05 10:50:26,356 INFO L78 Accepts]: Start accepts. Automaton has 23531 states and 44322 transitions. Word has length 367 [2021-06-05 10:50:26,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:26,356 INFO L482 AbstractCegarLoop]: Abstraction has 23531 states and 44322 transitions. [2021-06-05 10:50:26,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 7.03030303030303) internal successors, (232), 33 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 23531 states and 44322 transitions. [2021-06-05 10:50:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-06-05 10:50:26,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:26,379 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:26,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:26,580 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1059461759, now seen corresponding path program 28 times [2021-06-05 10:50:26,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:26,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601935651] [2021-06-05 10:50:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:27,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:27,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601935651] [2021-06-05 10:50:27,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601935651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:27,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762796364] [2021-06-05 10:50:27,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:27,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:50:27,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:27,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 10:50:27,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:27,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762796364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:27,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:27,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-05 10:50:27,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92043453] [2021-06-05 10:50:27,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 10:50:27,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 10:50:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 10:50:27,578 INFO L87 Difference]: Start difference. First operand 23531 states and 44322 transitions. Second operand has 35 states, 35 states have (on average 6.942857142857143) internal successors, (243), 35 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:28,106 INFO L93 Difference]: Finished difference Result 26151 states and 49202 transitions. [2021-06-05 10:50:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 10:50:28,107 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.942857142857143) internal successors, (243), 35 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-06-05 10:50:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:28,131 INFO L225 Difference]: With dead ends: 26151 [2021-06-05 10:50:28,132 INFO L226 Difference]: Without dead ends: 26151 [2021-06-05 10:50:28,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 720.6ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 10:50:28,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26151 states. [2021-06-05 10:50:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26151 to 25008. [2021-06-05 10:50:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25008 states, 25007 states have (on average 1.8833126724517135) internal successors, (47096), 25007 states have internal predecessors, (47096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25008 states to 25008 states and 47096 transitions. [2021-06-05 10:50:28,387 INFO L78 Accepts]: Start accepts. Automaton has 25008 states and 47096 transitions. Word has length 378 [2021-06-05 10:50:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:28,388 INFO L482 AbstractCegarLoop]: Abstraction has 25008 states and 47096 transitions. [2021-06-05 10:50:28,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.942857142857143) internal successors, (243), 35 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:28,388 INFO L276 IsEmpty]: Start isEmpty. Operand 25008 states and 47096 transitions. [2021-06-05 10:50:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-06-05 10:50:28,414 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:28,414 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:28,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:28,617 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash -667220909, now seen corresponding path program 29 times [2021-06-05 10:50:28,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:28,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032220117] [2021-06-05 10:50:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 0 proven. 1356 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:28,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:28,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032220117] [2021-06-05 10:50:28,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032220117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:28,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118712921] [2021-06-05 10:50:28,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:29,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-06-05 10:50:29,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:29,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 10:50:29,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 0 proven. 1356 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:29,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118712921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:29,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:29,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 10:50:29,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222875749] [2021-06-05 10:50:29,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 10:50:29,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:29,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 10:50:29,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 10:50:29,687 INFO L87 Difference]: Start difference. First operand 25008 states and 47096 transitions. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:30,282 INFO L93 Difference]: Finished difference Result 27628 states and 51976 transitions. [2021-06-05 10:50:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 10:50:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2021-06-05 10:50:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:30,309 INFO L225 Difference]: With dead ends: 27628 [2021-06-05 10:50:30,309 INFO L226 Difference]: Without dead ends: 27628 [2021-06-05 10:50:30,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 679.3ms TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 10:50:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27628 states. [2021-06-05 10:50:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27628 to 26485. [2021-06-05 10:50:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26485 states, 26484 states have (on average 1.8830237124301465) internal successors, (49870), 26484 states have internal predecessors, (49870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26485 states to 26485 states and 49870 transitions. [2021-06-05 10:50:30,584 INFO L78 Accepts]: Start accepts. Automaton has 26485 states and 49870 transitions. Word has length 389 [2021-06-05 10:50:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:30,584 INFO L482 AbstractCegarLoop]: Abstraction has 26485 states and 49870 transitions. [2021-06-05 10:50:30,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 26485 states and 49870 transitions. [2021-06-05 10:50:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-06-05 10:50:30,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:30,612 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:30,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-06-05 10:50:30,813 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 726978113, now seen corresponding path program 30 times [2021-06-05 10:50:30,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:30,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934346640] [2021-06-05 10:50:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 0 proven. 1533 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:31,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:31,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934346640] [2021-06-05 10:50:31,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934346640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:31,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428560169] [2021-06-05 10:50:31,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:31,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-06-05 10:50:31,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:31,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 10:50:31,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 0 proven. 1533 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:32,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428560169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:32,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:32,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 10:50:32,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491284389] [2021-06-05 10:50:32,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 10:50:32,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 10:50:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 10:50:32,038 INFO L87 Difference]: Start difference. First operand 26485 states and 49870 transitions. Second operand has 39 states, 39 states have (on average 6.794871794871795) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:32,763 INFO L93 Difference]: Finished difference Result 29105 states and 54750 transitions. [2021-06-05 10:50:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 10:50:32,763 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.794871794871795) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2021-06-05 10:50:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:32,786 INFO L225 Difference]: With dead ends: 29105 [2021-06-05 10:50:32,786 INFO L226 Difference]: Without dead ends: 29105 [2021-06-05 10:50:32,787 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 769.3ms TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 10:50:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29105 states. [2021-06-05 10:50:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29105 to 27962. [2021-06-05 10:50:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27962 states, 27961 states have (on average 1.8827652802117234) internal successors, (52644), 27961 states have internal predecessors, (52644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27962 states to 27962 states and 52644 transitions. [2021-06-05 10:50:33,064 INFO L78 Accepts]: Start accepts. Automaton has 27962 states and 52644 transitions. Word has length 400 [2021-06-05 10:50:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:33,065 INFO L482 AbstractCegarLoop]: Abstraction has 27962 states and 52644 transitions. [2021-06-05 10:50:33,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 6.794871794871795) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 27962 states and 52644 transitions. [2021-06-05 10:50:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-06-05 10:50:33,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:33,095 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:33,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:33,296 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1063574637, now seen corresponding path program 31 times [2021-06-05 10:50:33,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:33,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494724509] [2021-06-05 10:50:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 0 proven. 1721 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:33,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:33,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494724509] [2021-06-05 10:50:33,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494724509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:33,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654960527] [2021-06-05 10:50:33,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:33,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 10:50:33,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 0 proven. 1721 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:34,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654960527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:34,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:34,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-06-05 10:50:34,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369622799] [2021-06-05 10:50:34,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 10:50:34,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:34,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 10:50:34,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 10:50:34,371 INFO L87 Difference]: Start difference. First operand 27962 states and 52644 transitions. Second operand has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:35,140 INFO L93 Difference]: Finished difference Result 30582 states and 57524 transitions. [2021-06-05 10:50:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 10:50:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 411 [2021-06-05 10:50:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:35,167 INFO L225 Difference]: With dead ends: 30582 [2021-06-05 10:50:35,167 INFO L226 Difference]: Without dead ends: 30582 [2021-06-05 10:50:35,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 883.6ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 10:50:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30582 states. [2021-06-05 10:50:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30582 to 29439. [2021-06-05 10:50:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29439 states, 29438 states have (on average 1.8825327807595624) internal successors, (55418), 29438 states have internal predecessors, (55418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29439 states to 29439 states and 55418 transitions. [2021-06-05 10:50:35,609 INFO L78 Accepts]: Start accepts. Automaton has 29439 states and 55418 transitions. Word has length 411 [2021-06-05 10:50:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:35,610 INFO L482 AbstractCegarLoop]: Abstraction has 29439 states and 55418 transitions. [2021-06-05 10:50:35,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29439 states and 55418 transitions. [2021-06-05 10:50:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-06-05 10:50:35,637 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:35,637 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:35,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-06-05 10:50:35,854 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:35,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1234917631, now seen corresponding path program 32 times [2021-06-05 10:50:35,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:35,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210311101] [2021-06-05 10:50:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 1920 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:36,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:36,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210311101] [2021-06-05 10:50:36,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210311101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:36,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917012645] [2021-06-05 10:50:36,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:36,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:50:36,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:36,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 10:50:36,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 1920 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2021-06-05 10:50:36,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917012645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:36,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:36,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-06-05 10:50:36,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092678089] [2021-06-05 10:50:36,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-06-05 10:50:36,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:36,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-06-05 10:50:36,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 10:50:36,886 INFO L87 Difference]: Start difference. First operand 29439 states and 55418 transitions. Second operand has 43 states, 43 states have (on average 6.674418604651163) internal successors, (287), 43 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:50:37,761 INFO L93 Difference]: Finished difference Result 30916 states and 58192 transitions. [2021-06-05 10:50:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 10:50:37,762 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.674418604651163) internal successors, (287), 43 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2021-06-05 10:50:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:50:37,789 INFO L225 Difference]: With dead ends: 30916 [2021-06-05 10:50:37,789 INFO L226 Difference]: Without dead ends: 30916 [2021-06-05 10:50:37,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 963.1ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 10:50:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30916 states. [2021-06-05 10:50:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30916 to 30916. [2021-06-05 10:50:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30916 states, 30915 states have (on average 1.8823224971696588) internal successors, (58192), 30915 states have internal predecessors, (58192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30916 states to 30916 states and 58192 transitions. [2021-06-05 10:50:38,103 INFO L78 Accepts]: Start accepts. Automaton has 30916 states and 58192 transitions. Word has length 422 [2021-06-05 10:50:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:50:38,104 INFO L482 AbstractCegarLoop]: Abstraction has 30916 states and 58192 transitions. [2021-06-05 10:50:38,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 6.674418604651163) internal successors, (287), 43 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:50:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 30916 states and 58192 transitions. [2021-06-05 10:50:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:50:38,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:50:38,136 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:50:38,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 10:50:38,337 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:50:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:50:38,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1359981869, now seen corresponding path program 33 times [2021-06-05 10:50:38,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:50:38,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694593386] [2021-06-05 10:50:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:50:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:50:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:50:40,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:50:40,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694593386] [2021-06-05 10:50:40,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694593386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:40,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987714693] [2021-06-05 10:50:40,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:50:40,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-06-05 10:50:40,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:50:40,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:50:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:50:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:50:41,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987714693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:50:41,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:50:41,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-06-05 10:50:41,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060424691] [2021-06-05 10:50:41,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-06-05 10:50:41,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:50:41,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-06-05 10:50:41,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 10:50:41,506 INFO L87 Difference]: Start difference. First operand 30916 states and 58192 transitions. Second operand has 69 states, 69 states have (on average 6.333333333333333) internal successors, (437), 69 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:51:01,827 INFO L93 Difference]: Finished difference Result 150995 states and 288642 transitions. [2021-06-05 10:51:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 317 states. [2021-06-05 10:51:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.333333333333333) internal successors, (437), 69 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:51:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:51:01,969 INFO L225 Difference]: With dead ends: 150995 [2021-06-05 10:51:01,969 INFO L226 Difference]: Without dead ends: 150983 [2021-06-05 10:51:01,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 448 SyntacticMatches, 2 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32634 ImplicationChecksByTransitivity, 8724.3ms TimeCoverageRelationStatistics Valid=1162, Invalid=102844, Unknown=0, NotChecked=0, Total=104006 [2021-06-05 10:51:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150983 states. [2021-06-05 10:51:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150983 to 32534. [2021-06-05 10:51:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32534 states, 32533 states have (on average 1.8930009528786156) internal successors, (61585), 32533 states have internal predecessors, (61585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32534 states to 32534 states and 61585 transitions. [2021-06-05 10:51:02,810 INFO L78 Accepts]: Start accepts. Automaton has 32534 states and 61585 transitions. Word has length 433 [2021-06-05 10:51:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:51:02,811 INFO L482 AbstractCegarLoop]: Abstraction has 32534 states and 61585 transitions. [2021-06-05 10:51:02,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 6.333333333333333) internal successors, (437), 69 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 32534 states and 61585 transitions. [2021-06-05 10:51:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:51:02,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:51:02,844 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:51:03,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-06-05 10:51:03,045 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:51:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:51:03,045 INFO L82 PathProgramCache]: Analyzing trace with hash 454116571, now seen corresponding path program 34 times [2021-06-05 10:51:03,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:51:03,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971922945] [2021-06-05 10:51:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:51:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:51:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:51:04,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:51:04,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971922945] [2021-06-05 10:51:04,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971922945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:51:04,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420378603] [2021-06-05 10:51:04,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:51:05,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:51:05,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:51:05,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:51:05,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:51:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:51:05,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420378603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:51:05,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:51:05,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2021-06-05 10:51:05,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147547987] [2021-06-05 10:51:05,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-06-05 10:51:05,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:51:05,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-06-05 10:51:05,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 10:51:05,680 INFO L87 Difference]: Start difference. First operand 32534 states and 61585 transitions. Second operand has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:51:27,470 INFO L93 Difference]: Finished difference Result 167871 states and 321305 transitions. [2021-06-05 10:51:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2021-06-05 10:51:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:51:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:51:27,775 INFO L225 Difference]: With dead ends: 167871 [2021-06-05 10:51:27,775 INFO L226 Difference]: Without dead ends: 167847 [2021-06-05 10:51:27,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 447 SyntacticMatches, 2 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38769 ImplicationChecksByTransitivity, 9293.9ms TimeCoverageRelationStatistics Valid=1265, Invalid=118797, Unknown=0, NotChecked=0, Total=120062 [2021-06-05 10:51:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167847 states. [2021-06-05 10:51:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167847 to 33952. [2021-06-05 10:51:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33952 states, 33951 states have (on average 1.8926688462784602) internal successors, (64258), 33951 states have internal predecessors, (64258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33952 states to 33952 states and 64258 transitions. [2021-06-05 10:51:28,635 INFO L78 Accepts]: Start accepts. Automaton has 33952 states and 64258 transitions. Word has length 433 [2021-06-05 10:51:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:51:28,636 INFO L482 AbstractCegarLoop]: Abstraction has 33952 states and 64258 transitions. [2021-06-05 10:51:28,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 33952 states and 64258 transitions. [2021-06-05 10:51:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:51:28,669 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:51:28,669 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:51:28,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-05 10:51:28,870 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:51:28,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:51:28,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1557636753, now seen corresponding path program 35 times [2021-06-05 10:51:28,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:51:28,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074048910] [2021-06-05 10:51:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:51:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:51:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:51:30,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:51:30,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074048910] [2021-06-05 10:51:30,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074048910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:51:30,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761985621] [2021-06-05 10:51:30,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:51:30,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-06-05 10:51:30,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:51:30,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:51:30,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:51:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:51:31,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761985621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:51:31,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:51:31,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2021-06-05 10:51:31,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964457325] [2021-06-05 10:51:31,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-06-05 10:51:31,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:51:31,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-06-05 10:51:31,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 10:51:31,401 INFO L87 Difference]: Start difference. First operand 33952 states and 64258 transitions. Second operand has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:51:51,950 INFO L93 Difference]: Finished difference Result 153419 states and 293523 transitions. [2021-06-05 10:51:51,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2021-06-05 10:51:51,953 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:51:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:51:52,119 INFO L225 Difference]: With dead ends: 153419 [2021-06-05 10:51:52,119 INFO L226 Difference]: Without dead ends: 153407 [2021-06-05 10:51:52,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 447 SyntacticMatches, 2 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33405 ImplicationChecksByTransitivity, 8561.5ms TimeCoverageRelationStatistics Valid=1176, Invalid=105426, Unknown=0, NotChecked=0, Total=106602 [2021-06-05 10:51:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153407 states. [2021-06-05 10:51:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153407 to 34047. [2021-06-05 10:51:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34047 states, 34046 states have (on average 1.892703988721142) internal successors, (64439), 34046 states have internal predecessors, (64439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34047 states to 34047 states and 64439 transitions. [2021-06-05 10:51:52,987 INFO L78 Accepts]: Start accepts. Automaton has 34047 states and 64439 transitions. Word has length 433 [2021-06-05 10:51:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:51:52,987 INFO L482 AbstractCegarLoop]: Abstraction has 34047 states and 64439 transitions. [2021-06-05 10:51:52,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:51:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 34047 states and 64439 transitions. [2021-06-05 10:51:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:51:53,021 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:51:53,021 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:51:53,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-05 10:51:53,227 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:51:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:51:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1389996425, now seen corresponding path program 36 times [2021-06-05 10:51:53,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:51:53,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943883256] [2021-06-05 10:51:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:51:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:51:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:51:55,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:51:55,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943883256] [2021-06-05 10:51:55,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943883256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:51:55,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937328907] [2021-06-05 10:51:55,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:51:55,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-06-05 10:51:55,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:51:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:51:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:51:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:51:56,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937328907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:51:56,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:51:56,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-06-05 10:51:56,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377085891] [2021-06-05 10:51:56,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:51:56,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:51:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:51:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:51:56,356 INFO L87 Difference]: Start difference. First operand 34047 states and 64439 transitions. Second operand has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:52:19,874 INFO L93 Difference]: Finished difference Result 186974 states and 358074 transitions. [2021-06-05 10:52:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 366 states. [2021-06-05 10:52:19,875 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:52:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:52:20,043 INFO L225 Difference]: With dead ends: 186974 [2021-06-05 10:52:20,043 INFO L226 Difference]: Without dead ends: 186938 [2021-06-05 10:52:20,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45735 ImplicationChecksByTransitivity, 10319.1ms TimeCoverageRelationStatistics Valid=1372, Invalid=136640, Unknown=0, NotChecked=0, Total=138012 [2021-06-05 10:52:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186938 states. [2021-06-05 10:52:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186938 to 35280. [2021-06-05 10:52:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35280 states, 35279 states have (on average 1.8920037416026532) internal successors, (66748), 35279 states have internal predecessors, (66748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35280 states to 35280 states and 66748 transitions. [2021-06-05 10:52:21,182 INFO L78 Accepts]: Start accepts. Automaton has 35280 states and 66748 transitions. Word has length 433 [2021-06-05 10:52:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:52:21,182 INFO L482 AbstractCegarLoop]: Abstraction has 35280 states and 66748 transitions. [2021-06-05 10:52:21,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35280 states and 66748 transitions. [2021-06-05 10:52:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:52:21,216 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:52:21,216 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:52:21,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-06-05 10:52:21,417 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:52:21,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:52:21,417 INFO L82 PathProgramCache]: Analyzing trace with hash -816582073, now seen corresponding path program 37 times [2021-06-05 10:52:21,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:52:21,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937228575] [2021-06-05 10:52:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:52:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:52:23,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:52:23,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937228575] [2021-06-05 10:52:23,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937228575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:23,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149838016] [2021-06-05 10:52:23,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:52:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:52:23,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:52:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:52:23,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149838016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:23,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:52:23,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2021-06-05 10:52:23,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380775151] [2021-06-05 10:52:23,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-06-05 10:52:23,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:52:23,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-06-05 10:52:23,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 10:52:23,813 INFO L87 Difference]: Start difference. First operand 35280 states and 66748 transitions. Second operand has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:30,185 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-05 10:52:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:52:44,009 INFO L93 Difference]: Finished difference Result 154911 states and 296328 transitions. [2021-06-05 10:52:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2021-06-05 10:52:44,010 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:52:44,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:52:44,159 INFO L225 Difference]: With dead ends: 154911 [2021-06-05 10:52:44,159 INFO L226 Difference]: Without dead ends: 154899 [2021-06-05 10:52:44,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 447 SyntacticMatches, 2 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33664 ImplicationChecksByTransitivity, 8680.0ms TimeCoverageRelationStatistics Valid=1180, Invalid=106076, Unknown=0, NotChecked=0, Total=107256 [2021-06-05 10:52:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154899 states. [2021-06-05 10:52:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154899 to 35415. [2021-06-05 10:52:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35415 states, 35414 states have (on average 1.8920765798836618) internal successors, (67006), 35414 states have internal predecessors, (67006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35415 states to 35415 states and 67006 transitions. [2021-06-05 10:52:45,166 INFO L78 Accepts]: Start accepts. Automaton has 35415 states and 67006 transitions. Word has length 433 [2021-06-05 10:52:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:52:45,166 INFO L482 AbstractCegarLoop]: Abstraction has 35415 states and 67006 transitions. [2021-06-05 10:52:45,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:52:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35415 states and 67006 transitions. [2021-06-05 10:52:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:52:45,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:52:45,199 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:52:45,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-06-05 10:52:45,400 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:52:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:52:45,400 INFO L82 PathProgramCache]: Analyzing trace with hash -984222401, now seen corresponding path program 38 times [2021-06-05 10:52:45,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:52:45,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270968384] [2021-06-05 10:52:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:52:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:52:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:52:47,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:52:47,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270968384] [2021-06-05 10:52:47,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270968384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:47,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196807768] [2021-06-05 10:52:47,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:52:47,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:52:47,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:52:47,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:52:47,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:52:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:52:47,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196807768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:52:47,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:52:47,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-06-05 10:52:47,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592447872] [2021-06-05 10:52:47,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:52:47,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:52:47,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:52:47,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:52:47,818 INFO L87 Difference]: Start difference. First operand 35415 states and 67006 transitions. Second operand has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:53:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:53:09,671 INFO L93 Difference]: Finished difference Result 171634 states and 328702 transitions. [2021-06-05 10:53:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 344 states. [2021-06-05 10:53:09,672 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:53:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:53:09,932 INFO L225 Difference]: With dead ends: 171634 [2021-06-05 10:53:09,933 INFO L226 Difference]: Without dead ends: 171610 [2021-06-05 10:53:09,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39609 ImplicationChecksByTransitivity, 9220.7ms TimeCoverageRelationStatistics Valid=1279, Invalid=121571, Unknown=0, NotChecked=0, Total=122850 [2021-06-05 10:53:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171610 states. [2021-06-05 10:53:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171610 to 35440. [2021-06-05 10:53:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35440 states, 35439 states have (on average 1.8921527131126725) internal successors, (67056), 35439 states have internal predecessors, (67056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:53:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35440 states to 35440 states and 67056 transitions. [2021-06-05 10:53:10,852 INFO L78 Accepts]: Start accepts. Automaton has 35440 states and 67056 transitions. Word has length 433 [2021-06-05 10:53:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:53:10,853 INFO L482 AbstractCegarLoop]: Abstraction has 35440 states and 67056 transitions. [2021-06-05 10:53:10,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:53:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 35440 states and 67056 transitions. [2021-06-05 10:53:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:53:10,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:53:10,887 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:53:11,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-06-05 10:53:11,087 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:53:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:53:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash -84178615, now seen corresponding path program 39 times [2021-06-05 10:53:11,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:53:11,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430188610] [2021-06-05 10:53:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:53:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:53:12,327 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-06-05 10:53:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:53:13,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:53:13,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430188610] [2021-06-05 10:53:13,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430188610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:53:13,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092263521] [2021-06-05 10:53:13,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:53:13,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-06-05 10:53:13,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:53:13,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:53:13,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:53:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:53:14,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092263521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:53:14,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:53:14,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-06-05 10:53:14,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304697674] [2021-06-05 10:53:14,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:53:14,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:53:14,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:53:14,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:53:14,395 INFO L87 Difference]: Start difference. First operand 35440 states and 67056 transitions. Second operand has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:53:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:53:36,098 INFO L93 Difference]: Finished difference Result 172437 states and 330220 transitions. [2021-06-05 10:53:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 348 states. [2021-06-05 10:53:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:53:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:53:36,262 INFO L225 Difference]: With dead ends: 172437 [2021-06-05 10:53:36,262 INFO L226 Difference]: Without dead ends: 172413 [2021-06-05 10:53:36,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40743 ImplicationChecksByTransitivity, 9754.2ms TimeCoverageRelationStatistics Valid=1295, Invalid=124375, Unknown=0, NotChecked=0, Total=125670 [2021-06-05 10:53:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172413 states. [2021-06-05 10:53:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172413 to 35755. [2021-06-05 10:53:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35755 states, 35754 states have (on average 1.8921798959556972) internal successors, (67653), 35754 states have internal predecessors, (67653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:53:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35755 states to 35755 states and 67653 transitions. [2021-06-05 10:53:37,387 INFO L78 Accepts]: Start accepts. Automaton has 35755 states and 67653 transitions. Word has length 433 [2021-06-05 10:53:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:53:37,388 INFO L482 AbstractCegarLoop]: Abstraction has 35755 states and 67653 transitions. [2021-06-05 10:53:37,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:53:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 35755 states and 67653 transitions. [2021-06-05 10:53:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:53:37,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:53:37,424 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:53:37,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-06-05 10:53:37,625 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:53:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:53:37,625 INFO L82 PathProgramCache]: Analyzing trace with hash -81940143, now seen corresponding path program 40 times [2021-06-05 10:53:37,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:53:37,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448729383] [2021-06-05 10:53:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:53:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:53:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:53:39,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:53:39,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448729383] [2021-06-05 10:53:39,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448729383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:53:39,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182623279] [2021-06-05 10:53:39,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:53:39,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:53:39,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:53:39,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:53:39,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:53:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:53:40,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182623279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:53:40,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:53:40,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2021-06-05 10:53:40,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812936057] [2021-06-05 10:53:40,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-06-05 10:53:40,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:53:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-06-05 10:53:40,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 10:53:40,184 INFO L87 Difference]: Start difference. First operand 35755 states and 67653 transitions. Second operand has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:54:05,696 INFO L93 Difference]: Finished difference Result 208203 states and 398901 transitions. [2021-06-05 10:54:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 392 states. [2021-06-05 10:54:05,697 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:54:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:54:05,914 INFO L225 Difference]: With dead ends: 208203 [2021-06-05 10:54:05,914 INFO L226 Difference]: Without dead ends: 208155 [2021-06-05 10:54:05,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53604 ImplicationChecksByTransitivity, 10670.1ms TimeCoverageRelationStatistics Valid=1483, Invalid=156523, Unknown=0, NotChecked=0, Total=158006 [2021-06-05 10:54:06,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208155 states. [2021-06-05 10:54:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208155 to 36602. [2021-06-05 10:54:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36602 states, 36601 states have (on average 1.891533018223546) internal successors, (69232), 36601 states have internal predecessors, (69232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36602 states to 36602 states and 69232 transitions. [2021-06-05 10:54:07,087 INFO L78 Accepts]: Start accepts. Automaton has 36602 states and 69232 transitions. Word has length 433 [2021-06-05 10:54:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:54:07,087 INFO L482 AbstractCegarLoop]: Abstraction has 36602 states and 69232 transitions. [2021-06-05 10:54:07,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36602 states and 69232 transitions. [2021-06-05 10:54:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:54:07,122 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:54:07,122 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:54:07,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:54:07,323 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:54:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:54:07,323 INFO L82 PathProgramCache]: Analyzing trace with hash 2063345661, now seen corresponding path program 41 times [2021-06-05 10:54:07,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:54:07,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974861542] [2021-06-05 10:54:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:54:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:54:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:54:09,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:54:09,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974861542] [2021-06-05 10:54:09,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974861542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:54:09,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220253116] [2021-06-05 10:54:09,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:54:09,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-06-05 10:54:09,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:54:09,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:54:09,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:54:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:54:10,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220253116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:54:10,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:54:10,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2021-06-05 10:54:10,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070130658] [2021-06-05 10:54:10,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-06-05 10:54:10,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:54:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-06-05 10:54:10,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 10:54:10,193 INFO L87 Difference]: Start difference. First operand 36602 states and 69232 transitions. Second operand has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:54:30,333 INFO L93 Difference]: Finished difference Result 156403 states and 299133 transitions. [2021-06-05 10:54:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2021-06-05 10:54:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:54:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:54:30,463 INFO L225 Difference]: With dead ends: 156403 [2021-06-05 10:54:30,463 INFO L226 Difference]: Without dead ends: 156391 [2021-06-05 10:54:30,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 447 SyntacticMatches, 2 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33924 ImplicationChecksByTransitivity, 8749.2ms TimeCoverageRelationStatistics Valid=1184, Invalid=106728, Unknown=0, NotChecked=0, Total=107912 [2021-06-05 10:54:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156391 states. [2021-06-05 10:54:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156391 to 36777. [2021-06-05 10:54:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36777 states, 36776 states have (on average 1.8916412877963888) internal successors, (69567), 36776 states have internal predecessors, (69567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36777 states to 36777 states and 69567 transitions. [2021-06-05 10:54:31,285 INFO L78 Accepts]: Start accepts. Automaton has 36777 states and 69567 transitions. Word has length 433 [2021-06-05 10:54:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:54:31,285 INFO L482 AbstractCegarLoop]: Abstraction has 36777 states and 69567 transitions. [2021-06-05 10:54:31,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 36777 states and 69567 transitions. [2021-06-05 10:54:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:54:31,318 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:54:31,318 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:54:31,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:54:31,519 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:54:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:54:31,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1895705333, now seen corresponding path program 42 times [2021-06-05 10:54:31,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:54:31,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129589216] [2021-06-05 10:54:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:54:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:54:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:54:33,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:54:33,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129589216] [2021-06-05 10:54:33,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129589216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:54:33,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63432923] [2021-06-05 10:54:33,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:54:33,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-06-05 10:54:33,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:54:33,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:54:33,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:54:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:54:34,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63432923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:54:34,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:54:34,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-06-05 10:54:34,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122820633] [2021-06-05 10:54:34,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:54:34,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:54:34,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:54:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:54:34,530 INFO L87 Difference]: Start difference. First operand 36777 states and 69567 transitions. Second operand has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:54:56,465 INFO L93 Difference]: Finished difference Result 173126 states and 331507 transitions. [2021-06-05 10:54:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 345 states. [2021-06-05 10:54:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:54:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:54:56,615 INFO L225 Difference]: With dead ends: 173126 [2021-06-05 10:54:56,616 INFO L226 Difference]: Without dead ends: 173102 [2021-06-05 10:54:56,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39891 ImplicationChecksByTransitivity, 9523.6ms TimeCoverageRelationStatistics Valid=1283, Invalid=122269, Unknown=0, NotChecked=0, Total=123552 [2021-06-05 10:54:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173102 states. [2021-06-05 10:54:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173102 to 36842. [2021-06-05 10:54:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36842 states, 36841 states have (on average 1.891751038245433) internal successors, (69694), 36841 states have internal predecessors, (69694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36842 states to 36842 states and 69694 transitions. [2021-06-05 10:54:57,534 INFO L78 Accepts]: Start accepts. Automaton has 36842 states and 69694 transitions. Word has length 433 [2021-06-05 10:54:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:54:57,534 INFO L482 AbstractCegarLoop]: Abstraction has 36842 states and 69694 transitions. [2021-06-05 10:54:57,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:54:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 36842 states and 69694 transitions. [2021-06-05 10:54:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:54:57,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:54:57,567 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:54:57,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:54:57,768 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:54:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:54:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1499218177, now seen corresponding path program 43 times [2021-06-05 10:54:57,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:54:57,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534846085] [2021-06-05 10:54:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:54:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:54:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:54:59,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:54:59,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534846085] [2021-06-05 10:54:59,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534846085] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:54:59,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760906382] [2021-06-05 10:54:59,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:54:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:54:59,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:54:59,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:55:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:55:00,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760906382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:00,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:55:00,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-06-05 10:55:00,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791582093] [2021-06-05 10:55:00,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:55:00,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:55:00,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:55:00,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:55:00,134 INFO L87 Difference]: Start difference. First operand 36842 states and 69694 transitions. Second operand has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:55:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:55:22,056 INFO L93 Difference]: Finished difference Result 156843 states and 299985 transitions. [2021-06-05 10:55:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 325 states. [2021-06-05 10:55:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:55:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:55:22,191 INFO L225 Difference]: With dead ends: 156843 [2021-06-05 10:55:22,192 INFO L226 Difference]: Without dead ends: 156831 [2021-06-05 10:55:22,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34710 ImplicationChecksByTransitivity, 9165.4ms TimeCoverageRelationStatistics Valid=1198, Invalid=109358, Unknown=0, NotChecked=0, Total=110556 [2021-06-05 10:55:22,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156831 states. [2021-06-05 10:55:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156831 to 36937. [2021-06-05 10:55:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36937 states, 36936 states have (on average 1.8917857916395928) internal successors, (69875), 36936 states have internal predecessors, (69875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:55:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36937 states to 36937 states and 69875 transitions. [2021-06-05 10:55:23,048 INFO L78 Accepts]: Start accepts. Automaton has 36937 states and 69875 transitions. Word has length 433 [2021-06-05 10:55:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:55:23,049 INFO L482 AbstractCegarLoop]: Abstraction has 36937 states and 69875 transitions. [2021-06-05 10:55:23,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:55:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 36937 states and 69875 transitions. [2021-06-05 10:55:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:55:23,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:55:23,085 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:55:23,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:55:23,302 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:55:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:55:23,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1496979705, now seen corresponding path program 44 times [2021-06-05 10:55:23,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:55:23,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074925492] [2021-06-05 10:55:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:55:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:55:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:55:25,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:55:25,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074925492] [2021-06-05 10:55:25,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074925492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:25,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786958082] [2021-06-05 10:55:25,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:55:25,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 10:55:25,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:55:25,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:55:25,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:55:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:55:25,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786958082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:25,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:55:25,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2021-06-05 10:55:25,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589362349] [2021-06-05 10:55:25,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-06-05 10:55:25,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:55:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-06-05 10:55:25,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 10:55:25,821 INFO L87 Difference]: Start difference. First operand 36937 states and 69875 transitions. Second operand has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:55:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:55:50,028 INFO L93 Difference]: Finished difference Result 192033 states and 367900 transitions. [2021-06-05 10:55:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2021-06-05 10:55:50,028 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:55:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:55:50,191 INFO L225 Difference]: With dead ends: 192033 [2021-06-05 10:55:50,191 INFO L226 Difference]: Without dead ends: 191997 [2021-06-05 10:55:50,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46647 ImplicationChecksByTransitivity, 10257.6ms TimeCoverageRelationStatistics Valid=1386, Invalid=139614, Unknown=0, NotChecked=0, Total=141000 [2021-06-05 10:55:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191997 states. [2021-06-05 10:55:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191997 to 36762. [2021-06-05 10:55:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36762 states, 36761 states have (on average 1.891678681211066) internal successors, (69540), 36761 states have internal predecessors, (69540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:55:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36762 states to 36762 states and 69540 transitions. [2021-06-05 10:55:51,168 INFO L78 Accepts]: Start accepts. Automaton has 36762 states and 69540 transitions. Word has length 433 [2021-06-05 10:55:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:55:51,169 INFO L482 AbstractCegarLoop]: Abstraction has 36762 states and 69540 transitions. [2021-06-05 10:55:51,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:55:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36762 states and 69540 transitions. [2021-06-05 10:55:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:55:51,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:55:51,201 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:55:51,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 10:55:51,402 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:55:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:55:51,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1037981431, now seen corresponding path program 45 times [2021-06-05 10:55:51,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:55:51,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662454628] [2021-06-05 10:55:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:55:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:55:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:55:53,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:55:53,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662454628] [2021-06-05 10:55:53,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662454628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:53,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212737461] [2021-06-05 10:55:53,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:55:53,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-06-05 10:55:53,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:55:53,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:55:53,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:55:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:55:54,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212737461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:55:54,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:55:54,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-06-05 10:55:54,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378363280] [2021-06-05 10:55:54,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 10:55:54,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:55:54,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 10:55:54,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 10:55:54,449 INFO L87 Difference]: Start difference. First operand 36762 states and 69540 transitions. Second operand has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:56:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:56:16,696 INFO L93 Difference]: Finished difference Result 174454 states and 334032 transitions. [2021-06-05 10:56:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2021-06-05 10:56:16,696 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:56:16,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:56:16,840 INFO L225 Difference]: With dead ends: 174454 [2021-06-05 10:56:16,840 INFO L226 Difference]: Without dead ends: 174430 [2021-06-05 10:56:16,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41604 ImplicationChecksByTransitivity, 9724.2ms TimeCoverageRelationStatistics Valid=1307, Invalid=126499, Unknown=0, NotChecked=0, Total=127806 [2021-06-05 10:56:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174430 states. [2021-06-05 10:56:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174430 to 37157. [2021-06-05 10:56:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37157 states, 37156 states have (on average 1.8917806007105178) internal successors, (70291), 37156 states have internal predecessors, (70291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:56:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37157 states to 37157 states and 70291 transitions. [2021-06-05 10:56:17,867 INFO L78 Accepts]: Start accepts. Automaton has 37157 states and 70291 transitions. Word has length 433 [2021-06-05 10:56:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:56:17,867 INFO L482 AbstractCegarLoop]: Abstraction has 37157 states and 70291 transitions. [2021-06-05 10:56:17,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 6.154929577464789) internal successors, (437), 71 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:56:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 37157 states and 70291 transitions. [2021-06-05 10:56:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:56:17,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:56:17,901 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:56:18,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 10:56:18,103 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:56:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:56:18,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1035742959, now seen corresponding path program 46 times [2021-06-05 10:56:18,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:56:18,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081764643] [2021-06-05 10:56:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:56:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:56:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:56:19,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:56:19,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081764643] [2021-06-05 10:56:19,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081764643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:56:19,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735364837] [2021-06-05 10:56:19,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:56:20,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 10:56:20,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:56:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:56:20,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:56:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:56:20,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735364837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:56:20,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:56:20,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2021-06-05 10:56:20,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607692892] [2021-06-05 10:56:20,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-06-05 10:56:20,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:56:20,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-06-05 10:56:20,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 10:56:20,621 INFO L87 Difference]: Start difference. First operand 37157 states and 70291 transitions. Second operand has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:56:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:56:44,822 INFO L93 Difference]: Finished difference Result 192780 states and 369326 transitions. [2021-06-05 10:56:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 373 states. [2021-06-05 10:56:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:56:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:56:44,997 INFO L225 Difference]: With dead ends: 192780 [2021-06-05 10:56:44,997 INFO L226 Difference]: Without dead ends: 192744 [2021-06-05 10:56:45,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47877 ImplicationChecksByTransitivity, 10099.0ms TimeCoverageRelationStatistics Valid=1402, Invalid=142618, Unknown=0, NotChecked=0, Total=144020 [2021-06-05 10:56:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192744 states. [2021-06-05 10:56:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192744 to 37187. [2021-06-05 10:56:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37187 states, 37186 states have (on average 1.8917065562308395) internal successors, (70345), 37186 states have internal predecessors, (70345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:56:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37187 states to 37187 states and 70345 transitions. [2021-06-05 10:56:46,006 INFO L78 Accepts]: Start accepts. Automaton has 37187 states and 70345 transitions. Word has length 433 [2021-06-05 10:56:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:56:46,006 INFO L482 AbstractCegarLoop]: Abstraction has 37187 states and 70345 transitions. [2021-06-05 10:56:46,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:56:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 37187 states and 70345 transitions. [2021-06-05 10:56:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:56:46,039 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:56:46,039 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:56:46,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-06-05 10:56:46,245 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:56:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:56:46,245 INFO L82 PathProgramCache]: Analyzing trace with hash 152198983, now seen corresponding path program 47 times [2021-06-05 10:56:46,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:56:46,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42846101] [2021-06-05 10:56:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:56:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:56:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:56:48,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:56:48,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42846101] [2021-06-05 10:56:48,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42846101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:56:48,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536656370] [2021-06-05 10:56:48,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:56:48,348 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-06-05 10:56:48,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:56:48,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:56:48,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:56:48,871 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-06-05 10:56:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:56:49,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536656370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:56:49,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:56:49,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2021-06-05 10:56:49,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541856591] [2021-06-05 10:56:49,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-06-05 10:56:49,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:56:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-06-05 10:56:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 10:56:49,040 INFO L87 Difference]: Start difference. First operand 37187 states and 70345 transitions. Second operand has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:57:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:57:12,840 INFO L93 Difference]: Finished difference Result 193861 states and 371373 transitions. [2021-06-05 10:57:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 377 states. [2021-06-05 10:57:12,841 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:57:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:57:12,993 INFO L225 Difference]: With dead ends: 193861 [2021-06-05 10:57:12,994 INFO L226 Difference]: Without dead ends: 193825 [2021-06-05 10:57:12,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49123 ImplicationChecksByTransitivity, 10303.7ms TimeCoverageRelationStatistics Valid=1418, Invalid=145654, Unknown=0, NotChecked=0, Total=147072 [2021-06-05 10:57:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193825 states. [2021-06-05 10:57:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193825 to 37667. [2021-06-05 10:57:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37667 states, 37666 states have (on average 1.8917325970371157) internal successors, (71254), 37666 states have internal predecessors, (71254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:57:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37667 states to 37667 states and 71254 transitions. [2021-06-05 10:57:13,948 INFO L78 Accepts]: Start accepts. Automaton has 37667 states and 71254 transitions. Word has length 433 [2021-06-05 10:57:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:57:13,949 INFO L482 AbstractCegarLoop]: Abstraction has 37667 states and 71254 transitions. [2021-06-05 10:57:13,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 6.069444444444445) internal successors, (437), 72 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:57:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 37667 states and 71254 transitions. [2021-06-05 10:57:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:57:13,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:57:13,983 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:57:14,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:57:14,184 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:57:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:57:14,184 INFO L82 PathProgramCache]: Analyzing trace with hash 532212799, now seen corresponding path program 48 times [2021-06-05 10:57:14,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:57:14,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46628819] [2021-06-05 10:57:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:57:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:57:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:57:16,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:57:16,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46628819] [2021-06-05 10:57:16,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46628819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:57:16,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965786061] [2021-06-05 10:57:16,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:57:16,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-06-05 10:57:16,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 10:57:16,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:57:16,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:57:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:57:17,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965786061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:57:17,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:57:17,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-06-05 10:57:17,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098374104] [2021-06-05 10:57:17,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-06-05 10:57:17,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:57:17,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-06-05 10:57:17,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5111, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 10:57:17,221 INFO L87 Difference]: Start difference. First operand 37667 states and 71254 transitions. Second operand has 73 states, 73 states have (on average 5.986301369863014) internal successors, (437), 73 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:57:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:57:44,393 INFO L93 Difference]: Finished difference Result 231330 states and 443345 transitions. [2021-06-05 10:57:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 419 states. [2021-06-05 10:57:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.986301369863014) internal successors, (437), 73 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-06-05 10:57:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:57:44,628 INFO L225 Difference]: With dead ends: 231330 [2021-06-05 10:57:44,628 INFO L226 Difference]: Without dead ends: 231270 [2021-06-05 10:57:44,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62451 ImplicationChecksByTransitivity, 11699.1ms TimeCoverageRelationStatistics Valid=1598, Invalid=178602, Unknown=0, NotChecked=0, Total=180200 [2021-06-05 10:57:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231270 states. [2021-06-05 10:57:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231270 to 37924. [2021-06-05 10:57:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37924 states, 37923 states have (on average 1.8910951137831922) internal successors, (71716), 37923 states have internal predecessors, (71716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:57:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37924 states to 37924 states and 71716 transitions. [2021-06-05 10:57:45,966 INFO L78 Accepts]: Start accepts. Automaton has 37924 states and 71716 transitions. Word has length 433 [2021-06-05 10:57:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:57:45,966 INFO L482 AbstractCegarLoop]: Abstraction has 37924 states and 71716 transitions. [2021-06-05 10:57:45,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 5.986301369863014) internal successors, (437), 73 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:57:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 37924 states and 71716 transitions. [2021-06-05 10:57:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-06-05 10:57:46,000 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:57:46,000 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:57:46,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 10:57:46,200 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:57:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:57:46,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1840887885, now seen corresponding path program 49 times [2021-06-05 10:57:46,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:57:46,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063857369] [2021-06-05 10:57:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:57:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:57:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:57:47,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:57:47,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063857369] [2021-06-05 10:57:47,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063857369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:57:47,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764037332] [2021-06-05 10:57:47,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 10:57:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:57:47,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 165 conjunts are in the unsatisfiable core [2021-06-05 10:57:47,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 10:57:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:57:48,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764037332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 10:57:48,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 10:57:48,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2021-06-05 10:57:48,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151536375] [2021-06-05 10:57:48,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-06-05 10:57:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:57:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-06-05 10:57:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 10:57:48,516 INFO L87 Difference]: Start difference. First operand 37924 states and 71716 transitions. Second operand has 70 states, 70 states have (on average 6.242857142857143) internal successors, (437), 70 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 10:57:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:57:49,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-05 10:57:49,061 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 10:57:49,063 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:57:49,064 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 10:57:49,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:57:49 BasicIcfg [2021-06-05 10:57:49,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:57:49,065 INFO L168 Benchmark]: Toolchain (without parser) took 726118.23 ms. Allocated memory was 362.8 MB in the beginning and 4.6 GB in the end (delta: 4.3 GB). Free memory was 324.1 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. [2021-06-05 10:57:49,065 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 362.8 MB. Free memory is still 343.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:57:49,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.04 ms. Allocated memory is still 362.8 MB. Free memory was 324.0 MB in the beginning and 271.6 MB in the end (delta: 52.4 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:49,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 362.8 MB. Free memory was 271.6 MB in the beginning and 268.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:49,065 INFO L168 Benchmark]: Boogie Preprocessor took 27.86 ms. Allocated memory is still 362.8 MB. Free memory was 268.7 MB in the beginning and 267.9 MB in the end (delta: 805.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:57:49,065 INFO L168 Benchmark]: RCFGBuilder took 363.88 ms. Allocated memory is still 362.8 MB. Free memory was 267.4 MB in the beginning and 240.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 10:57:49,065 INFO L168 Benchmark]: TraceAbstraction took 725109.65 ms. Allocated memory was 362.8 MB in the beginning and 4.6 GB in the end (delta: 4.3 GB). Free memory was 240.2 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-06-05 10:57:49,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 362.8 MB. Free memory is still 343.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 563.04 ms. Allocated memory is still 362.8 MB. Free memory was 324.0 MB in the beginning and 271.6 MB in the end (delta: 52.4 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 362.8 MB. Free memory was 271.6 MB in the beginning and 268.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.86 ms. Allocated memory is still 362.8 MB. Free memory was 268.7 MB in the beginning and 267.9 MB in the end (delta: 805.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 363.88 ms. Allocated memory is still 362.8 MB. Free memory was 267.4 MB in the beginning and 240.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 725109.65 ms. Allocated memory was 362.8 MB in the beginning and 4.6 GB in the end (delta: 4.3 GB). Free memory was 240.2 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (37924states) and FLOYD_HOARE automaton (currently 9 states, 70 states before enhancement),while ReachableStatesComputation was computing reachable states (238 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (37924states) and FLOYD_HOARE automaton (currently 9 states, 70 states before enhancement),while ReachableStatesComputation was computing reachable states (238 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 725016.7ms, OverallIterations: 52, TraceHistogramMax: 20, EmptinessCheckTime: 974.4ms, AutomataDifference: 624681.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 79546 SDtfs, 193379 SDslu, 5024415 SDs, 0 SdLazy, 749932 SolverSat, 12194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 174871.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28962 GetRequests, 17322 SyntacticMatches, 34 SemanticMatches, 11606 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3185787 ImplicationChecksByTransitivity, 402203.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37924occurred in iteration=51, InterpolantAutomatonStates: 11097, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19965.1ms AutomataMinimizationTime, 51 MinimizatonAttempts, 2282788 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1234.9ms SsaConstructionTime, 8054.4ms SatisfiabilityAnalysisTime, 57503.5ms InterpolantComputationTime, 30546 NumberOfCodeBlocks, 29945 NumberOfCodeBlocksAsserted, 498 NumberOfCheckSat, 30445 ConstructedInterpolants, 0 QuantifiedInterpolants, 131954 SizeOfPredicates, 1334 NumberOfNonLiveVariables, 29357 ConjunctsInSsa, 3489 ConjunctsInUnsatCore, 101 InterpolantComputations, 4 PerfectInterpolantSequences, 41720/205869 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