/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:48:55,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:48:55,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:48:55,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 22:48:55,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 22:48:55,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 22:48:55,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 22:48:55,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 22:48:55,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 22:48:55,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 22:48:55,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 22:48:55,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 22:48:55,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 22:48:55,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 22:48:55,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 22:48:55,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 22:48:55,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 22:48:55,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 22:48:55,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 22:48:55,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 22:48:55,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 22:48:55,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 22:48:55,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 22:48:55,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 22:48:55,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 22:48:55,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:48:55,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:48:55,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:48:55,825 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-PN-NoLbe.epf [2021-10-13 22:48:55,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:48:55,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:48:55,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:48:55,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:48:55,845 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:48:55,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:48:55,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:48:55,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:48:55,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:48:55,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:48:55,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:48:55,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:48:55,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:48:55,847 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:48:55,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:48:55,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:48:55,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:48:55,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:48:55,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:48:55,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:48:55,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:48:55,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:48:55,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:48:55,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:48:55,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:48:55,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:48:55,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:48:55,850 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:48:55,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-13 22:48:55,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:48:56,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:48:56,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:48:56,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:48:56,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:48:56,102 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:48:56,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-10-13 22:48:56,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f760583/9101a7fdc7494374b7e42096aee2b684/FLAGad359ccad [2021-10-13 22:48:56,607 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:48:56,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-10-13 22:48:56,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f760583/9101a7fdc7494374b7e42096aee2b684/FLAGad359ccad [2021-10-13 22:48:56,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f760583/9101a7fdc7494374b7e42096aee2b684 [2021-10-13 22:48:56,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:48:56,974 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:48:56,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:48:56,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:48:56,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:48:56,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:48:56" (1/1) ... [2021-10-13 22:48:56,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53453db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:56, skipping insertion in model container [2021-10-13 22:48:56,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:48:56" (1/1) ... [2021-10-13 22:48:56,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:48:57,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:48:57,191 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-13 22:48:57,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-10-13 22:48:57,317 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-10-13 22:48:57,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:48:57,333 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:48:57,346 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-13 22:48:57,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-10-13 22:48:57,371 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-10-13 22:48:57,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:48:57,405 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:48:57,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57 WrapperNode [2021-10-13 22:48:57,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:48:57,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:48:57,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:48:57,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:48:57,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:48:57,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:48:57,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:48:57,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:48:57,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:48:57,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:48:57,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:48:57,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:48:57,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (1/1) ... [2021-10-13 22:48:57,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:48:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:48:57,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 22:48:57,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 22:48:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 22:48:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-10-13 22:48:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-10-13 22:48:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-13 22:48:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-13 22:48:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:48:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:48:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:48:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:48:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:48:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:48:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:48:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:48:57,593 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 22:48:57,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:48:57,916 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 22:48:57,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:48:57 BoogieIcfgContainer [2021-10-13 22:48:57,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:48:57,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:48:57,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:48:57,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:48:57,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:48:56" (1/3) ... [2021-10-13 22:48:57,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba3fcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:48:57, skipping insertion in model container [2021-10-13 22:48:57,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:57" (2/3) ... [2021-10-13 22:48:57,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba3fcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:48:57, skipping insertion in model container [2021-10-13 22:48:57,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:48:57" (3/3) ... [2021-10-13 22:48:57,924 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-10-13 22:48:57,928 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:48:57,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 22:48:57,929 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:48:57,951 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,952 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,952 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,952 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,953 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,953 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,953 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,953 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,953 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,955 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,955 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,955 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,955 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,955 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,956 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,956 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,956 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,956 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,956 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,956 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,958 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,973 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,973 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,973 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,973 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:48:57,979 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 22:48:58,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:48:58,022 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 22:48:58,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 22:48:58,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 216 flow [2021-10-13 22:48:58,067 INFO L129 PetriNetUnfolder]: 13/98 cut-off events. [2021-10-13 22:48:58,067 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 22:48:58,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 13/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 22:48:58,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 100 transitions, 216 flow [2021-10-13 22:48:58,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 187 flow [2021-10-13 22:48:58,096 INFO L129 PetriNetUnfolder]: 4/49 cut-off events. [2021-10-13 22:48:58,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:48:58,097 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:48:58,097 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-13 22:48:58,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-13 22:48:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:48:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash -899152307, now seen corresponding path program 1 times [2021-10-13 22:48:58,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:48:58,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969934985] [2021-10-13 22:48:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:48:58,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:48:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:48:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:48:58,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:48:58,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969934985] [2021-10-13 22:48:58,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969934985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:48:58,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:48:58,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 22:48:58,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049578966] [2021-10-13 22:48:58,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 22:48:58,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:48:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 22:48:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 22:48:58,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 100 [2021-10-13 22:48:58,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:48:58,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 100 [2021-10-13 22:48:58,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:48:58,330 INFO L129 PetriNetUnfolder]: 6/82 cut-off events. [2021-10-13 22:48:58,330 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:48:58,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 6/82 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 7/80 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2021-10-13 22:48:58,337 INFO L132 encePairwiseOnDemand]: 93/100 looper letters, 0 selfloop transitions, 0 changer transitions 1/82 dead transitions. [2021-10-13 22:48:58,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 173 flow [2021-10-13 22:48:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 22:48:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-13 22:48:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 193 transitions. [2021-10-13 22:48:58,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.965 [2021-10-13 22:48:58,352 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 193 transitions. [2021-10-13 22:48:58,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 193 transitions. [2021-10-13 22:48:58,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:48:58,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 193 transitions. [2021-10-13 22:48:58,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.5) internal successors, (193), 2 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) [2021-10-13 22:48:58,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,365 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,367 INFO L186 Difference]: Start difference. First operand has 83 places, 89 transitions, 187 flow. Second operand 2 states and 193 transitions. [2021-10-13 22:48:58,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 173 flow [2021-10-13 22:48:58,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-13 22:48:58,372 INFO L242 Difference]: Finished difference. Result has 81 places, 81 transitions, 166 flow [2021-10-13 22:48:58,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2021-10-13 22:48:58,375 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -2 predicate places. [2021-10-13 22:48:58,375 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 166 flow [2021-10-13 22:48:58,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,376 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:48:58,376 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-13 22:48:58,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:48:58,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-13 22:48:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:48:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash -899122516, now seen corresponding path program 1 times [2021-10-13 22:48:58,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:48:58,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525517386] [2021-10-13 22:48:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:48:58,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:48:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:48:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:48:58,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:48:58,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525517386] [2021-10-13 22:48:58,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525517386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:48:58,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:48:58,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:48:58,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379969866] [2021-10-13 22:48:58,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:48:58,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:48:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:48:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:48:58,463 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 100 [2021-10-13 22:48:58,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:48:58,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 100 [2021-10-13 22:48:58,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:48:58,506 INFO L129 PetriNetUnfolder]: 13/135 cut-off events. [2021-10-13 22:48:58,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:48:58,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 135 events. 13/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 412 event pairs, 2 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 166. Up to 18 conditions per place. [2021-10-13 22:48:58,508 INFO L132 encePairwiseOnDemand]: 95/100 looper letters, 7 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2021-10-13 22:48:58,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 192 flow [2021-10-13 22:48:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:48:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:48:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-10-13 22:48:58,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-13 22:48:58,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-10-13 22:48:58,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-10-13 22:48:58,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:48:58,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-10-13 22:48:58,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,515 INFO L186 Difference]: Start difference. First operand has 81 places, 81 transitions, 166 flow. Second operand 3 states and 270 transitions. [2021-10-13 22:48:58,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 192 flow [2021-10-13 22:48:58,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-13 22:48:58,519 INFO L242 Difference]: Finished difference. Result has 84 places, 82 transitions, 186 flow [2021-10-13 22:48:58,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2021-10-13 22:48:58,519 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-10-13 22:48:58,520 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 186 flow [2021-10-13 22:48:58,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,520 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:48:58,520 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:48:58,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:48:58,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-13 22:48:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:48:58,521 INFO L82 PathProgramCache]: Analyzing trace with hash -957605978, now seen corresponding path program 1 times [2021-10-13 22:48:58,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:48:58,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456605057] [2021-10-13 22:48:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:48:58,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:48:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:48:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:48:58,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:48:58,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456605057] [2021-10-13 22:48:58,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456605057] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:48:58,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:48:58,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:48:58,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066204381] [2021-10-13 22:48:58,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:48:58,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:48:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:48:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:48:58,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 100 [2021-10-13 22:48:58,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:48:58,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 100 [2021-10-13 22:48:58,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:48:58,618 INFO L129 PetriNetUnfolder]: 8/117 cut-off events. [2021-10-13 22:48:58,618 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-10-13 22:48:58,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 117 events. 8/117 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 305 event pairs, 2 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 158. Up to 11 conditions per place. [2021-10-13 22:48:58,620 INFO L132 encePairwiseOnDemand]: 96/100 looper letters, 6 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2021-10-13 22:48:58,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 202 flow [2021-10-13 22:48:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:48:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:48:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2021-10-13 22:48:58,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8933333333333333 [2021-10-13 22:48:58,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2021-10-13 22:48:58,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2021-10-13 22:48:58,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:48:58,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2021-10-13 22:48:58,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,626 INFO L186 Difference]: Start difference. First operand has 84 places, 82 transitions, 186 flow. Second operand 3 states and 268 transitions. [2021-10-13 22:48:58,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 202 flow [2021-10-13 22:48:58,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:48:58,630 INFO L242 Difference]: Finished difference. Result has 85 places, 82 transitions, 190 flow [2021-10-13 22:48:58,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2021-10-13 22:48:58,630 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2021-10-13 22:48:58,630 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 190 flow [2021-10-13 22:48:58,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:48:58,631 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-13 22:48:58,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:48:58,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-13 22:48:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:48:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1032804881, now seen corresponding path program 1 times [2021-10-13 22:48:58,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:48:58,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186942433] [2021-10-13 22:48:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:48:58,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:48:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:48:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:48:58,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:48:58,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186942433] [2021-10-13 22:48:58,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186942433] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:48:58,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:48:58,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 22:48:58,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898082832] [2021-10-13 22:48:58,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 22:48:58,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:48:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 22:48:58,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 22:48:58,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 100 [2021-10-13 22:48:58,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:48:58,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 100 [2021-10-13 22:48:58,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:48:58,844 INFO L129 PetriNetUnfolder]: 47/264 cut-off events. [2021-10-13 22:48:58,845 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2021-10-13 22:48:58,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 264 events. 47/264 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1211 event pairs, 9 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 365. Up to 27 conditions per place. [2021-10-13 22:48:58,848 INFO L132 encePairwiseOnDemand]: 93/100 looper letters, 11 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2021-10-13 22:48:58,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 254 flow [2021-10-13 22:48:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 22:48:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-13 22:48:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2021-10-13 22:48:58,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.876 [2021-10-13 22:48:58,858 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2021-10-13 22:48:58,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2021-10-13 22:48:58,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:48:58,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2021-10-13 22:48:58,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,863 INFO L186 Difference]: Start difference. First operand has 85 places, 82 transitions, 190 flow. Second operand 5 states and 438 transitions. [2021-10-13 22:48:58,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 254 flow [2021-10-13 22:48:58,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-13 22:48:58,867 INFO L242 Difference]: Finished difference. Result has 91 places, 88 transitions, 245 flow [2021-10-13 22:48:58,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2021-10-13 22:48:58,867 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2021-10-13 22:48:58,867 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 245 flow [2021-10-13 22:48:58,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:48:58,868 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-13 22:48:58,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:48:58,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-13 22:48:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:48:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1445210861, now seen corresponding path program 2 times [2021-10-13 22:48:58,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:48:58,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201902717] [2021-10-13 22:48:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:48:58,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:48:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:48:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:48:58,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:48:58,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201902717] [2021-10-13 22:48:58,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201902717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:48:58,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:48:58,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 22:48:58,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241652134] [2021-10-13 22:48:58,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 22:48:58,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:48:58,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 22:48:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 22:48:58,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 100 [2021-10-13 22:48:58,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:58,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:48:58,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 100 [2021-10-13 22:48:58,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:48:59,094 INFO L129 PetriNetUnfolder]: 97/386 cut-off events. [2021-10-13 22:48:59,094 INFO L130 PetriNetUnfolder]: For 54/56 co-relation queries the response was YES. [2021-10-13 22:48:59,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 386 events. 97/386 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2022 event pairs, 2 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 630. Up to 39 conditions per place. [2021-10-13 22:48:59,105 INFO L132 encePairwiseOnDemand]: 93/100 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2021-10-13 22:48:59,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 303 flow [2021-10-13 22:48:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 22:48:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-13 22:48:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2021-10-13 22:48:59,108 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.878 [2021-10-13 22:48:59,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2021-10-13 22:48:59,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2021-10-13 22:48:59,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:48:59,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2021-10-13 22:48:59,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:59,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:59,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:59,116 INFO L186 Difference]: Start difference. First operand has 91 places, 88 transitions, 245 flow. Second operand 5 states and 439 transitions. [2021-10-13 22:48:59,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 303 flow [2021-10-13 22:48:59,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 297 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-13 22:48:59,124 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-10-13 22:48:59,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-10-13 22:48:59,125 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 7 predicate places. [2021-10-13 22:48:59,125 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-10-13 22:48:59,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:48:59,127 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:48:59,128 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:48:59,128 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:48:59,129 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 22:48:59,130 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:48:59,130 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:48:59,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:48:59,143 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:48:59,143 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:48:59,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:48:59 BasicIcfg [2021-10-13 22:48:59,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:48:59,146 INFO L168 Benchmark]: Toolchain (without parser) took 2171.72 ms. Allocated memory was 181.4 MB in the beginning and 264.2 MB in the end (delta: 82.8 MB). Free memory was 120.5 MB in the beginning and 200.1 MB in the end (delta: -79.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2021-10-13 22:48:59,147 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 181.4 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:48:59,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.84 ms. Allocated memory was 181.4 MB in the beginning and 264.2 MB in the end (delta: 82.8 MB). Free memory was 120.4 MB in the beginning and 227.7 MB in the end (delta: -107.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2021-10-13 22:48:59,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.75 ms. Allocated memory is still 264.2 MB. Free memory was 227.7 MB in the beginning and 225.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:48:59,155 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 264.2 MB. Free memory was 225.6 MB in the beginning and 224.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:48:59,156 INFO L168 Benchmark]: RCFGBuilder took 411.93 ms. Allocated memory is still 264.2 MB. Free memory was 224.1 MB in the beginning and 211.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-13 22:48:59,156 INFO L168 Benchmark]: TraceAbstraction took 1225.97 ms. Allocated memory is still 264.2 MB. Free memory was 210.4 MB in the beginning and 200.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-10-13 22:48:59,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 181.4 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 431.84 ms. Allocated memory was 181.4 MB in the beginning and 264.2 MB in the end (delta: 82.8 MB). Free memory was 120.4 MB in the beginning and 227.7 MB in the end (delta: -107.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.75 ms. Allocated memory is still 264.2 MB. Free memory was 227.7 MB in the beginning and 225.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 264.2 MB. Free memory was 225.6 MB in the beginning and 224.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 411.93 ms. Allocated memory is still 264.2 MB. Free memory was 224.1 MB in the beginning and 211.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1225.97 ms. Allocated memory is still 264.2 MB. Free memory was 210.4 MB in the beginning and 200.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1127.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 512.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 61.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 23 SDslu, 16 SDs, 0 SdLazy, 56 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.0ms SsaConstructionTime, 92.8ms SatisfiabilityAnalysisTime, 252.6ms InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 22:48:59,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...