/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-ext/45_monabsex1_vs-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:53:27,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:53:27,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:53:27,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 22:53:27,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 22:53:27,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 22:53:27,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 22:53:27,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 22:53:27,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 22:53:27,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 22:53:27,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 22:53:27,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 22:53:27,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 22:53:27,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 22:53:27,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 22:53:27,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 22:53:27,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 22:53:27,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 22:53:27,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 22:53:27,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 22:53:27,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 22:53:27,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 22:53:27,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 22:53:27,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 22:53:27,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 22:53:27,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:53:27,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:53:27,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:53:27,927 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 22:53:27,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:53:27,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:53:27,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:53:27,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:53:27,949 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:53:27,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:53:27,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:53:27,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:53:27,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:53:27,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:53:27,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:53:27,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:53:27,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:53:27,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:53:27,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:53:27,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:53:27,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:53:27,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:53:27,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:53:27,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:53:27,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:53:27,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:53:27,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-13 22:53:27,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:53:28,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:53:28,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:53:28,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:53:28,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:53:28,203 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:53:28,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs-b.i [2021-10-13 22:53:28,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe874d34b/be4c788928634ab2adf9c9e68f814e29/FLAG629b727ee [2021-10-13 22:53:28,727 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:53:28,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs-b.i [2021-10-13 22:53:28,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe874d34b/be4c788928634ab2adf9c9e68f814e29/FLAG629b727ee [2021-10-13 22:53:29,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe874d34b/be4c788928634ab2adf9c9e68f814e29 [2021-10-13 22:53:29,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:53:29,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:53:29,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:53:29,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:53:29,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:53:29,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbaf95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29, skipping insertion in model container [2021-10-13 22:53:29,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:53:29,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:53:29,566 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-ext/45_monabsex1_vs-b.i[30010,30023] [2021-10-13 22:53:29,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:53:29,584 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:53:29,613 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-ext/45_monabsex1_vs-b.i[30010,30023] [2021-10-13 22:53:29,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:53:29,644 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:53:29,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29 WrapperNode [2021-10-13 22:53:29,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:53:29,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:53:29,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:53:29,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:53:29,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:53:29,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:53:29,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:53:29,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:53:29,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:53:29,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:53:29,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:53:29,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:53:29,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (1/1) ... [2021-10-13 22:53:29,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:53:29,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:53:29,732 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 22:53:29,733 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 22:53:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-13 22:53:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-13 22:53:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:53:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:53:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:53:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:53:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:53:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:53:29,769 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 22:53:30,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:53:30,017 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 22:53:30,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:30 BoogieIcfgContainer [2021-10-13 22:53:30,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:53:30,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:53:30,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:53:30,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:53:30,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:53:29" (1/3) ... [2021-10-13 22:53:30,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2948d2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:30, skipping insertion in model container [2021-10-13 22:53:30,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:29" (2/3) ... [2021-10-13 22:53:30,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2948d2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:30, skipping insertion in model container [2021-10-13 22:53:30,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:30" (3/3) ... [2021-10-13 22:53:30,025 INFO L111 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs-b.i [2021-10-13 22:53:30,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:53:30,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:53:30,030 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:53:30,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,094 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:53:30,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:53:30,150 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 22:53:30,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 22:53:30,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 87 flow [2021-10-13 22:53:30,207 INFO L129 PetriNetUnfolder]: 3/51 cut-off events. [2021-10-13 22:53:30,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:53:30,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 51 events. 3/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2021-10-13 22:53:30,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 41 transitions, 87 flow [2021-10-13 22:53:30,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 41 transitions, 87 flow [2021-10-13 22:53:30,240 INFO L129 PetriNetUnfolder]: 2/44 cut-off events. [2021-10-13 22:53:30,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:53:30,240 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:30,241 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:30,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 22:53:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:30,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1070827952, now seen corresponding path program 1 times [2021-10-13 22:53:30,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:30,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933465513] [2021-10-13 22:53:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:30,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:30,407 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 22:53:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:30,470 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 22:53:30,472 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 22:53:30,473 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:53:30,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:30,475 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:30,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:53:30,480 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-10-13 22:53:30,480 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-10-13 22:53:30,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,521 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,526 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:53:30,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:53:30,533 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 22:53:30,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 22:53:30,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 122 flow [2021-10-13 22:53:30,547 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-10-13 22:53:30,547 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 22:53:30,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 5/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2021-10-13 22:53:30,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 55 transitions, 122 flow [2021-10-13 22:53:30,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 122 flow [2021-10-13 22:53:30,556 INFO L129 PetriNetUnfolder]: 2/49 cut-off events. [2021-10-13 22:53:30,556 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:53:30,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:30,557 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] [2021-10-13 22:53:30,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 22:53:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1153413606, now seen corresponding path program 1 times [2021-10-13 22:53:30,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:30,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143095391] [2021-10-13 22:53:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:30,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:30,679 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 22:53:30,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:30,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143095391] [2021-10-13 22:53:30,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143095391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:30,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:30,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:30,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231017177] [2021-10-13 22:53:30,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:30,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:30,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 55 [2021-10-13 22:53:30,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:30,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:30,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 55 [2021-10-13 22:53:30,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:30,794 INFO L129 PetriNetUnfolder]: 15/111 cut-off events. [2021-10-13 22:53:30,794 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 22:53:30,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 111 events. 15/111 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 338 event pairs, 8 based on Foata normal form. 43/140 useless extension candidates. Maximal degree in co-relation 127. Up to 32 conditions per place. [2021-10-13 22:53:30,796 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 12 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2021-10-13 22:53:30,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 140 flow [2021-10-13 22:53:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:30,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2021-10-13 22:53:30,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2021-10-13 22:53:30,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 137 transitions. [2021-10-13 22:53:30,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 137 transitions. [2021-10-13 22:53:30,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:30,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 137 transitions. [2021-10-13 22:53:30,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:30,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:30,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:30,823 INFO L186 Difference]: Start difference. First operand has 57 places, 55 transitions, 122 flow. Second operand 3 states and 137 transitions. [2021-10-13 22:53:30,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 140 flow [2021-10-13 22:53:30,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 138 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:30,832 INFO L242 Difference]: Finished difference. Result has 54 places, 47 transitions, 122 flow [2021-10-13 22:53:30,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2021-10-13 22:53:30,834 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2021-10-13 22:53:30,835 INFO L470 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 122 flow [2021-10-13 22:53:30,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:30,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:30,835 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:30,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:53:30,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 22:53:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:30,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1087719821, now seen corresponding path program 1 times [2021-10-13 22:53:30,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:30,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744632281] [2021-10-13 22:53:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:30,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:30,874 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 22:53:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:30,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 22:53:30,911 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 22:53:30,911 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:53:30,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:30,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:30,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:30,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:53:30,913 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-10-13 22:53:30,913 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-10-13 22:53:30,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,944 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,945 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,945 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:30,951 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:53:30,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:53:30,954 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 22:53:30,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 22:53:30,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 69 transitions, 159 flow [2021-10-13 22:53:30,980 INFO L129 PetriNetUnfolder]: 7/103 cut-off events. [2021-10-13 22:53:30,980 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-10-13 22:53:30,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 103 events. 7/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 171 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2021-10-13 22:53:30,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 69 transitions, 159 flow [2021-10-13 22:53:30,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 69 transitions, 159 flow [2021-10-13 22:53:30,992 INFO L129 PetriNetUnfolder]: 3/49 cut-off events. [2021-10-13 22:53:30,993 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:53:30,993 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:30,993 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] [2021-10-13 22:53:30,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 22:53:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:30,994 INFO L82 PathProgramCache]: Analyzing trace with hash -325405364, now seen corresponding path program 1 times [2021-10-13 22:53:30,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:30,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047838043] [2021-10-13 22:53:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:30,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:31,043 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 22:53:31,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:31,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047838043] [2021-10-13 22:53:31,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047838043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:31,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:31,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:31,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847555099] [2021-10-13 22:53:31,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:31,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:31,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 69 [2021-10-13 22:53:31,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:31,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 69 [2021-10-13 22:53:31,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:31,163 INFO L129 PetriNetUnfolder]: 156/476 cut-off events. [2021-10-13 22:53:31,163 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-13 22:53:31,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 476 events. 156/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2845 event pairs, 94 based on Foata normal form. 209/593 useless extension candidates. Maximal degree in co-relation 722. Up to 205 conditions per place. [2021-10-13 22:53:31,170 INFO L132 encePairwiseOnDemand]: 59/69 looper letters, 17 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2021-10-13 22:53:31,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 191 flow [2021-10-13 22:53:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-10-13 22:53:31,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8309178743961353 [2021-10-13 22:53:31,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-10-13 22:53:31,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-10-13 22:53:31,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:31,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-10-13 22:53:31,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 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) [2021-10-13 22:53:31,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 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) [2021-10-13 22:53:31,180 INFO L186 Difference]: Start difference. First operand has 72 places, 69 transitions, 159 flow. Second operand 3 states and 172 transitions. [2021-10-13 22:53:31,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 191 flow [2021-10-13 22:53:31,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 185 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:31,182 INFO L242 Difference]: Finished difference. Result has 68 places, 60 transitions, 159 flow [2021-10-13 22:53:31,183 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2021-10-13 22:53:31,183 INFO L334 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2021-10-13 22:53:31,183 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 159 flow [2021-10-13 22:53:31,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,183 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:31,184 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:31,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:53:31,184 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 22:53:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1675166455, now seen corresponding path program 1 times [2021-10-13 22:53:31,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:31,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224791306] [2021-10-13 22:53:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:31,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:31,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:31,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224791306] [2021-10-13 22:53:31,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224791306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:31,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:31,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:31,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214454461] [2021-10-13 22:53:31,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:31,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:31,234 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 69 [2021-10-13 22:53:31,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:31,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 69 [2021-10-13 22:53:31,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:31,358 INFO L129 PetriNetUnfolder]: 188/602 cut-off events. [2021-10-13 22:53:31,359 INFO L130 PetriNetUnfolder]: For 234/304 co-relation queries the response was YES. [2021-10-13 22:53:31,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 602 events. 188/602 cut-off events. For 234/304 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3955 event pairs, 92 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 1160. Up to 257 conditions per place. [2021-10-13 22:53:31,366 INFO L132 encePairwiseOnDemand]: 64/69 looper letters, 20 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2021-10-13 22:53:31,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 247 flow [2021-10-13 22:53:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2021-10-13 22:53:31,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2021-10-13 22:53:31,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2021-10-13 22:53:31,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2021-10-13 22:53:31,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:31,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2021-10-13 22:53:31,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 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) [2021-10-13 22:53:31,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 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) [2021-10-13 22:53:31,370 INFO L186 Difference]: Start difference. First operand has 68 places, 60 transitions, 159 flow. Second operand 3 states and 163 transitions. [2021-10-13 22:53:31,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 247 flow [2021-10-13 22:53:31,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:53:31,376 INFO L242 Difference]: Finished difference. Result has 70 places, 64 transitions, 199 flow [2021-10-13 22:53:31,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2021-10-13 22:53:31,377 INFO L334 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2021-10-13 22:53:31,377 INFO L470 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 199 flow [2021-10-13 22:53:31,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:31,377 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:31,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:53:31,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-13 22:53:31,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash -599297745, now seen corresponding path program 1 times [2021-10-13 22:53:31,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:31,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895443626] [2021-10-13 22:53:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:31,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:31,403 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 22:53:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:31,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 22:53:31,425 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 22:53:31,426 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:53:31,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:31,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:31,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:31,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:31,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 22:53:31,427 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-10-13 22:53:31,427 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-10-13 22:53:31,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:31,474 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:53:31,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:53:31,477 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 22:53:31,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 22:53:31,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 198 flow [2021-10-13 22:53:31,497 INFO L129 PetriNetUnfolder]: 9/129 cut-off events. [2021-10-13 22:53:31,497 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-10-13 22:53:31,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 129 events. 9/129 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 222 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2021-10-13 22:53:31,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 198 flow [2021-10-13 22:53:31,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 83 transitions, 198 flow [2021-10-13 22:53:31,503 INFO L129 PetriNetUnfolder]: 2/48 cut-off events. [2021-10-13 22:53:31,504 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:53:31,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:31,504 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] [2021-10-13 22:53:31,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:53:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash -256338868, now seen corresponding path program 1 times [2021-10-13 22:53:31,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:31,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057559166] [2021-10-13 22:53:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:31,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:31,533 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 22:53:31,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:31,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057559166] [2021-10-13 22:53:31,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057559166] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:31,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:31,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:31,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346271345] [2021-10-13 22:53:31,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:31,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:31,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:31,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:31,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2021-10-13 22:53:31,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:31,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2021-10-13 22:53:31,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:31,805 INFO L129 PetriNetUnfolder]: 1017/2219 cut-off events. [2021-10-13 22:53:31,805 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-13 22:53:31,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 2219 events. 1017/2219 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16971 event pairs, 654 based on Foata normal form. 963/2688 useless extension candidates. Maximal degree in co-relation 3703. Up to 1146 conditions per place. [2021-10-13 22:53:31,833 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 22 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2021-10-13 22:53:31,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 244 flow [2021-10-13 22:53:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2021-10-13 22:53:31,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8313253012048193 [2021-10-13 22:53:31,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2021-10-13 22:53:31,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2021-10-13 22:53:31,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:31,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2021-10-13 22:53:31,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,837 INFO L186 Difference]: Start difference. First operand has 87 places, 83 transitions, 198 flow. Second operand 3 states and 207 transitions. [2021-10-13 22:53:31,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 244 flow [2021-10-13 22:53:31,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 232 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:31,841 INFO L242 Difference]: Finished difference. Result has 82 places, 73 transitions, 196 flow [2021-10-13 22:53:31,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2021-10-13 22:53:31,841 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2021-10-13 22:53:31,841 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 196 flow [2021-10-13 22:53:31,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:31,842 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:31,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 22:53:31,842 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:53:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:31,842 INFO L82 PathProgramCache]: Analyzing trace with hash 442724663, now seen corresponding path program 1 times [2021-10-13 22:53:31,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:31,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979740203] [2021-10-13 22:53:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:31,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:31,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:31,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979740203] [2021-10-13 22:53:31,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979740203] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:31,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:31,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:31,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706031832] [2021-10-13 22:53:31,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:31,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:31,883 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2021-10-13 22:53:31,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:31,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:31,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2021-10-13 22:53:31,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:32,229 INFO L129 PetriNetUnfolder]: 1382/3116 cut-off events. [2021-10-13 22:53:32,230 INFO L130 PetriNetUnfolder]: For 1379/2133 co-relation queries the response was YES. [2021-10-13 22:53:32,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6569 conditions, 3116 events. 1382/3116 cut-off events. For 1379/2133 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25610 event pairs, 703 based on Foata normal form. 1/2613 useless extension candidates. Maximal degree in co-relation 6508. Up to 1597 conditions per place. [2021-10-13 22:53:32,270 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 26 selfloop transitions, 8 changer transitions 0/86 dead transitions. [2021-10-13 22:53:32,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 314 flow [2021-10-13 22:53:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2021-10-13 22:53:32,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7871485943775101 [2021-10-13 22:53:32,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2021-10-13 22:53:32,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2021-10-13 22:53:32,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:32,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2021-10-13 22:53:32,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:32,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:32,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:32,274 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 196 flow. Second operand 3 states and 196 transitions. [2021-10-13 22:53:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 314 flow [2021-10-13 22:53:32,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:53:32,283 INFO L242 Difference]: Finished difference. Result has 84 places, 79 transitions, 254 flow [2021-10-13 22:53:32,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2021-10-13 22:53:32,283 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2021-10-13 22:53:32,283 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 254 flow [2021-10-13 22:53:32,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:32,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:32,284 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:32,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 22:53:32,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:53:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:32,284 INFO L82 PathProgramCache]: Analyzing trace with hash 595633620, now seen corresponding path program 1 times [2021-10-13 22:53:32,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:32,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116325875] [2021-10-13 22:53:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:32,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:32,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:32,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116325875] [2021-10-13 22:53:32,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116325875] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:32,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:32,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:53:32,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261115524] [2021-10-13 22:53:32,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:53:32,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:53:32,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:53:32,354 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 83 [2021-10-13 22:53:32,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 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) [2021-10-13 22:53:32,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:32,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 83 [2021-10-13 22:53:32,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:33,153 INFO L129 PetriNetUnfolder]: 2893/6145 cut-off events. [2021-10-13 22:53:33,153 INFO L130 PetriNetUnfolder]: For 4062/10089 co-relation queries the response was YES. [2021-10-13 22:53:33,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14869 conditions, 6145 events. 2893/6145 cut-off events. For 4062/10089 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 54409 event pairs, 722 based on Foata normal form. 60/5162 useless extension candidates. Maximal degree in co-relation 14791. Up to 1581 conditions per place. [2021-10-13 22:53:33,225 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 61 selfloop transitions, 29 changer transitions 0/139 dead transitions. [2021-10-13 22:53:33,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 139 transitions, 695 flow [2021-10-13 22:53:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:53:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-13 22:53:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 446 transitions. [2021-10-13 22:53:33,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676419965576592 [2021-10-13 22:53:33,227 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 446 transitions. [2021-10-13 22:53:33,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 446 transitions. [2021-10-13 22:53:33,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:33,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 446 transitions. [2021-10-13 22:53:33,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:33,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:33,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:33,231 INFO L186 Difference]: Start difference. First operand has 84 places, 79 transitions, 254 flow. Second operand 7 states and 446 transitions. [2021-10-13 22:53:33,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 139 transitions, 695 flow [2021-10-13 22:53:33,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:53:33,246 INFO L242 Difference]: Finished difference. Result has 92 places, 102 transitions, 486 flow [2021-10-13 22:53:33,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2021-10-13 22:53:33,246 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2021-10-13 22:53:33,246 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 486 flow [2021-10-13 22:53:33,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 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) [2021-10-13 22:53:33,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:33,247 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:33,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 22:53:33,247 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:53:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:33,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1513896852, now seen corresponding path program 2 times [2021-10-13 22:53:33,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:33,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358987166] [2021-10-13 22:53:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:33,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:33,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:33,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358987166] [2021-10-13 22:53:33,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358987166] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:33,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:33,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:53:33,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174860819] [2021-10-13 22:53:33,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:53:33,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:33,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:53:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:53:33,287 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 83 [2021-10-13 22:53:33,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 486 flow. Second operand has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 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) [2021-10-13 22:53:33,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:33,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 83 [2021-10-13 22:53:33,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:34,046 INFO L129 PetriNetUnfolder]: 2889/6414 cut-off events. [2021-10-13 22:53:34,046 INFO L130 PetriNetUnfolder]: For 9415/24786 co-relation queries the response was YES. [2021-10-13 22:53:34,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17740 conditions, 6414 events. 2889/6414 cut-off events. For 9415/24786 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 58876 event pairs, 919 based on Foata normal form. 137/5616 useless extension candidates. Maximal degree in co-relation 10024. Up to 1448 conditions per place. [2021-10-13 22:53:34,175 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 63 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2021-10-13 22:53:34,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 147 transitions, 919 flow [2021-10-13 22:53:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 22:53:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-13 22:53:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 386 transitions. [2021-10-13 22:53:34,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7751004016064257 [2021-10-13 22:53:34,177 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 386 transitions. [2021-10-13 22:53:34,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 386 transitions. [2021-10-13 22:53:34,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:34,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 386 transitions. [2021-10-13 22:53:34,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:34,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:34,179 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:34,179 INFO L186 Difference]: Start difference. First operand has 92 places, 102 transitions, 486 flow. Second operand 6 states and 386 transitions. [2021-10-13 22:53:34,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 147 transitions, 919 flow [2021-10-13 22:53:34,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 147 transitions, 915 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:34,202 INFO L242 Difference]: Finished difference. Result has 101 places, 115 transitions, 747 flow [2021-10-13 22:53:34,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=747, PETRI_PLACES=101, PETRI_TRANSITIONS=115} [2021-10-13 22:53:34,203 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 14 predicate places. [2021-10-13 22:53:34,203 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 747 flow [2021-10-13 22:53:34,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 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) [2021-10-13 22:53:34,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:34,203 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:34,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 22:53:34,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:53:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1702438931, now seen corresponding path program 1 times [2021-10-13 22:53:34,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:34,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808346828] [2021-10-13 22:53:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:34,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 22:53:34,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:34,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808346828] [2021-10-13 22:53:34,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808346828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:34,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:34,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:34,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294157187] [2021-10-13 22:53:34,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:34,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:34,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:34,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2021-10-13 22:53:34,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 747 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:34,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:34,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2021-10-13 22:53:34,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:35,312 INFO L129 PetriNetUnfolder]: 3846/9224 cut-off events. [2021-10-13 22:53:35,312 INFO L130 PetriNetUnfolder]: For 26451/28850 co-relation queries the response was YES. [2021-10-13 22:53:35,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29495 conditions, 9224 events. 3846/9224 cut-off events. For 26451/28850 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 96540 event pairs, 1577 based on Foata normal form. 33/8211 useless extension candidates. Maximal degree in co-relation 29444. Up to 4597 conditions per place. [2021-10-13 22:53:35,444 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 68 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2021-10-13 22:53:35,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 1379 flow [2021-10-13 22:53:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2021-10-13 22:53:35,446 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7871485943775101 [2021-10-13 22:53:35,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2021-10-13 22:53:35,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2021-10-13 22:53:35,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:35,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2021-10-13 22:53:35,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:35,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:35,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:35,447 INFO L186 Difference]: Start difference. First operand has 101 places, 115 transitions, 747 flow. Second operand 3 states and 196 transitions. [2021-10-13 22:53:35,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 1379 flow [2021-10-13 22:53:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 1355 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:35,500 INFO L242 Difference]: Finished difference. Result has 105 places, 137 transitions, 1165 flow [2021-10-13 22:53:35,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1165, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2021-10-13 22:53:35,500 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2021-10-13 22:53:35,500 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1165 flow [2021-10-13 22:53:35,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:35,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:35,501 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:35,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 22:53:35,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:53:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash 938601988, now seen corresponding path program 1 times [2021-10-13 22:53:35,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:35,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838938977] [2021-10-13 22:53:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:35,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:35,516 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 22:53:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:53:35,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 22:53:35,544 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 22:53:35,544 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:53:35,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:35,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:35,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:35,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:35,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:53:35,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 22:53:35,545 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-10-13 22:53:35,545 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-10-13 22:53:35,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,575 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,575 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:53:35,583 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:53:35,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:53:35,585 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 22:53:35,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 22:53:35,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 239 flow [2021-10-13 22:53:35,600 INFO L129 PetriNetUnfolder]: 11/155 cut-off events. [2021-10-13 22:53:35,600 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-10-13 22:53:35,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 155 events. 11/155 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 286 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 142. Up to 12 conditions per place. [2021-10-13 22:53:35,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 239 flow [2021-10-13 22:53:35,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 239 flow [2021-10-13 22:53:35,606 INFO L129 PetriNetUnfolder]: 3/51 cut-off events. [2021-10-13 22:53:35,606 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:53:35,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:35,606 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] [2021-10-13 22:53:35,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:53:35,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1603000422, now seen corresponding path program 1 times [2021-10-13 22:53:35,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:35,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501072649] [2021-10-13 22:53:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:35,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:35,625 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 22:53:35,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:35,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501072649] [2021-10-13 22:53:35,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501072649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:35,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:35,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:35,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546092704] [2021-10-13 22:53:35,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:35,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:35,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 97 [2021-10-13 22:53:35,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:35,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:35,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 97 [2021-10-13 22:53:35,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:36,692 INFO L129 PetriNetUnfolder]: 5622/10287 cut-off events. [2021-10-13 22:53:36,693 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-10-13 22:53:36,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17988 conditions, 10287 events. 5622/10287 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 87717 event pairs, 3758 based on Foata normal form. 4357/12211 useless extension candidates. Maximal degree in co-relation 17905. Up to 5879 conditions per place. [2021-10-13 22:53:36,786 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 27 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2021-10-13 22:53:36,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 299 flow [2021-10-13 22:53:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2021-10-13 22:53:36,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316151202749141 [2021-10-13 22:53:36,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2021-10-13 22:53:36,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2021-10-13 22:53:36,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:36,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2021-10-13 22:53:36,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:36,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:36,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:36,789 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 239 flow. Second operand 3 states and 242 transitions. [2021-10-13 22:53:36,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 299 flow [2021-10-13 22:53:36,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 279 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:36,791 INFO L242 Difference]: Finished difference. Result has 96 places, 86 transitions, 233 flow [2021-10-13 22:53:36,791 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2021-10-13 22:53:36,791 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, -6 predicate places. [2021-10-13 22:53:36,791 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 233 flow [2021-10-13 22:53:36,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:36,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:36,792 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:36,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 22:53:36,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:53:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:36,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1432870089, now seen corresponding path program 1 times [2021-10-13 22:53:36,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:36,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943475238] [2021-10-13 22:53:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:36,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:36,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:36,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943475238] [2021-10-13 22:53:36,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943475238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:36,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:36,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:36,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369380972] [2021-10-13 22:53:36,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:36,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:36,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:36,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 97 [2021-10-13 22:53:36,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:36,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:36,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 97 [2021-10-13 22:53:36,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:38,043 INFO L129 PetriNetUnfolder]: 7913/14999 cut-off events. [2021-10-13 22:53:38,044 INFO L130 PetriNetUnfolder]: For 6926/12094 co-relation queries the response was YES. [2021-10-13 22:53:38,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32342 conditions, 14999 events. 7913/14999 cut-off events. For 6926/12094 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 137528 event pairs, 4290 based on Foata normal form. 1/12233 useless extension candidates. Maximal degree in co-relation 32280. Up to 8448 conditions per place. [2021-10-13 22:53:38,322 INFO L132 encePairwiseOnDemand]: 90/97 looper letters, 32 selfloop transitions, 10 changer transitions 0/103 dead transitions. [2021-10-13 22:53:38,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 381 flow [2021-10-13 22:53:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2021-10-13 22:53:38,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7869415807560137 [2021-10-13 22:53:38,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2021-10-13 22:53:38,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2021-10-13 22:53:38,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:38,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2021-10-13 22:53:38,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 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) [2021-10-13 22:53:38,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:38,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:38,325 INFO L186 Difference]: Start difference. First operand has 96 places, 86 transitions, 233 flow. Second operand 3 states and 229 transitions. [2021-10-13 22:53:38,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 381 flow [2021-10-13 22:53:38,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 103 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:53:38,348 INFO L242 Difference]: Finished difference. Result has 98 places, 94 transitions, 309 flow [2021-10-13 22:53:38,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2021-10-13 22:53:38,348 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, -4 predicate places. [2021-10-13 22:53:38,348 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 309 flow [2021-10-13 22:53:38,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:38,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:38,349 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:38,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 22:53:38,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:53:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:38,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1631162132, now seen corresponding path program 1 times [2021-10-13 22:53:38,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:38,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545932825] [2021-10-13 22:53:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:38,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:38,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:38,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545932825] [2021-10-13 22:53:38,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545932825] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:38,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:38,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:53:38,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954233786] [2021-10-13 22:53:38,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:53:38,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:53:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:53:38,382 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2021-10-13 22:53:38,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:38,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:38,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2021-10-13 22:53:38,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:40,688 INFO L129 PetriNetUnfolder]: 16599/29631 cut-off events. [2021-10-13 22:53:40,688 INFO L130 PetriNetUnfolder]: For 18690/77830 co-relation queries the response was YES. [2021-10-13 22:53:40,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73883 conditions, 29631 events. 16599/29631 cut-off events. For 18690/77830 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 279583 event pairs, 3604 based on Foata normal form. 169/24032 useless extension candidates. Maximal degree in co-relation 73804. Up to 8392 conditions per place. [2021-10-13 22:53:41,234 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 78 selfloop transitions, 35 changer transitions 0/171 dead transitions. [2021-10-13 22:53:41,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 864 flow [2021-10-13 22:53:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:53:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-13 22:53:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2021-10-13 22:53:41,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7761413843888071 [2021-10-13 22:53:41,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2021-10-13 22:53:41,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2021-10-13 22:53:41,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:41,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2021-10-13 22:53:41,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:41,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:41,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:41,240 INFO L186 Difference]: Start difference. First operand has 98 places, 94 transitions, 309 flow. Second operand 7 states and 527 transitions. [2021-10-13 22:53:41,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 864 flow [2021-10-13 22:53:41,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 171 transitions, 812 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:53:41,335 INFO L242 Difference]: Finished difference. Result has 106 places, 121 transitions, 585 flow [2021-10-13 22:53:41,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=106, PETRI_TRANSITIONS=121} [2021-10-13 22:53:41,336 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2021-10-13 22:53:41,336 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 121 transitions, 585 flow [2021-10-13 22:53:41,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:41,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:41,338 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:41,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 22:53:41,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:53:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:41,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2059483604, now seen corresponding path program 2 times [2021-10-13 22:53:41,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:41,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549368254] [2021-10-13 22:53:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:41,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 22:53:41,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:41,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549368254] [2021-10-13 22:53:41,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549368254] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:41,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:41,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:53:41,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43531179] [2021-10-13 22:53:41,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:53:41,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:53:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:53:41,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2021-10-13 22:53:41,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 121 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:41,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:41,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2021-10-13 22:53:41,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:44,218 INFO L129 PetriNetUnfolder]: 16851/31334 cut-off events. [2021-10-13 22:53:44,218 INFO L130 PetriNetUnfolder]: For 44158/184653 co-relation queries the response was YES. [2021-10-13 22:53:44,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87657 conditions, 31334 events. 16851/31334 cut-off events. For 44158/184653 co-relation queries the response was YES. Maximal size of possible extension queue 1762. Compared 307102 event pairs, 5464 based on Foata normal form. 355/26285 useless extension candidates. Maximal degree in co-relation 51866. Up to 7839 conditions per place. [2021-10-13 22:53:44,594 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 79 selfloop transitions, 43 changer transitions 0/180 dead transitions. [2021-10-13 22:53:44,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1130 flow [2021-10-13 22:53:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 22:53:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-13 22:53:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2021-10-13 22:53:44,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.781786941580756 [2021-10-13 22:53:44,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 455 transitions. [2021-10-13 22:53:44,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 455 transitions. [2021-10-13 22:53:44,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:44,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 455 transitions. [2021-10-13 22:53:44,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:44,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:44,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:44,600 INFO L186 Difference]: Start difference. First operand has 106 places, 121 transitions, 585 flow. Second operand 6 states and 455 transitions. [2021-10-13 22:53:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1130 flow [2021-10-13 22:53:44,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 180 transitions, 1124 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:44,751 INFO L242 Difference]: Finished difference. Result has 115 places, 137 transitions, 906 flow [2021-10-13 22:53:44,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=906, PETRI_PLACES=115, PETRI_TRANSITIONS=137} [2021-10-13 22:53:44,752 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 13 predicate places. [2021-10-13 22:53:44,752 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 137 transitions, 906 flow [2021-10-13 22:53:44,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:44,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:44,752 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:44,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 22:53:44,752 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:53:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:44,753 INFO L82 PathProgramCache]: Analyzing trace with hash -69270917, now seen corresponding path program 1 times [2021-10-13 22:53:44,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:44,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944898450] [2021-10-13 22:53:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:44,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 22:53:44,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:44,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944898450] [2021-10-13 22:53:44,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944898450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:44,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:44,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:53:44,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932333288] [2021-10-13 22:53:44,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:53:44,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:53:44,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:53:44,777 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 97 [2021-10-13 22:53:44,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 137 transitions, 906 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:44,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:44,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 97 [2021-10-13 22:53:44,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:49,190 INFO L129 PetriNetUnfolder]: 24530/48460 cut-off events. [2021-10-13 22:53:49,190 INFO L130 PetriNetUnfolder]: For 149521/300775 co-relation queries the response was YES. [2021-10-13 22:53:49,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154455 conditions, 48460 events. 24530/48460 cut-off events. For 149521/300775 co-relation queries the response was YES. Maximal size of possible extension queue 2804. Compared 536555 event pairs, 10683 based on Foata normal form. 50/41378 useless extension candidates. Maximal degree in co-relation 154403. Up to 26870 conditions per place. [2021-10-13 22:53:49,894 INFO L132 encePairwiseOnDemand]: 90/97 looper letters, 84 selfloop transitions, 45 changer transitions 0/193 dead transitions. [2021-10-13 22:53:49,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 193 transitions, 1742 flow [2021-10-13 22:53:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:53:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:53:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2021-10-13 22:53:49,895 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7869415807560137 [2021-10-13 22:53:49,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2021-10-13 22:53:49,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2021-10-13 22:53:49,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:49,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2021-10-13 22:53:49,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 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) [2021-10-13 22:53:49,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:49,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:49,897 INFO L186 Difference]: Start difference. First operand has 115 places, 137 transitions, 906 flow. Second operand 3 states and 229 transitions. [2021-10-13 22:53:49,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 193 transitions, 1742 flow [2021-10-13 22:53:50,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 193 transitions, 1718 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-10-13 22:53:50,264 INFO L242 Difference]: Finished difference. Result has 119 places, 171 transitions, 1538 flow [2021-10-13 22:53:50,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1538, PETRI_PLACES=119, PETRI_TRANSITIONS=171} [2021-10-13 22:53:50,264 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2021-10-13 22:53:50,265 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 171 transitions, 1538 flow [2021-10-13 22:53:50,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:50,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:53:50,265 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:53:50,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 22:53:50,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:53:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:53:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1740105968, now seen corresponding path program 1 times [2021-10-13 22:53:50,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:53:50,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592515256] [2021-10-13 22:53:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:53:50,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:53:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:53:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 22:53:50,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:53:50,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592515256] [2021-10-13 22:53:50,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592515256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:53:50,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:53:50,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:53:50,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275828681] [2021-10-13 22:53:50,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:53:50,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:53:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:53:50,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:53:50,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2021-10-13 22:53:50,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 171 transitions, 1538 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:50,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:53:50,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2021-10-13 22:53:50,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:53:58,595 INFO L129 PetriNetUnfolder]: 42452/81919 cut-off events. [2021-10-13 22:53:58,595 INFO L130 PetriNetUnfolder]: For 301684/1028803 co-relation queries the response was YES. [2021-10-13 22:53:59,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294813 conditions, 81919 events. 42452/81919 cut-off events. For 301684/1028803 co-relation queries the response was YES. Maximal size of possible extension queue 4271. Compared 933908 event pairs, 8187 based on Foata normal form. 1069/73160 useless extension candidates. Maximal degree in co-relation 294758. Up to 22686 conditions per place. [2021-10-13 22:53:59,858 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 134 selfloop transitions, 120 changer transitions 0/314 dead transitions. [2021-10-13 22:53:59,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 314 transitions, 3620 flow [2021-10-13 22:53:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 22:53:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-13 22:53:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2021-10-13 22:53:59,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.781786941580756 [2021-10-13 22:53:59,860 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 455 transitions. [2021-10-13 22:53:59,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 455 transitions. [2021-10-13 22:53:59,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:53:59,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 455 transitions. [2021-10-13 22:53:59,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:59,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:59,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:53:59,862 INFO L186 Difference]: Start difference. First operand has 119 places, 171 transitions, 1538 flow. Second operand 6 states and 455 transitions. [2021-10-13 22:53:59,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 314 transitions, 3620 flow [2021-10-13 22:54:02,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 314 transitions, 3430 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:54:02,158 INFO L242 Difference]: Finished difference. Result has 126 places, 250 transitions, 3034 flow [2021-10-13 22:54:02,158 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3034, PETRI_PLACES=126, PETRI_TRANSITIONS=250} [2021-10-13 22:54:02,158 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 24 predicate places. [2021-10-13 22:54:02,158 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 250 transitions, 3034 flow [2021-10-13 22:54:02,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:02,159 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:54:02,159 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:54:02,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 22:54:02,159 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:54:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:54:02,159 INFO L82 PathProgramCache]: Analyzing trace with hash -980323432, now seen corresponding path program 2 times [2021-10-13 22:54:02,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:54:02,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376624624] [2021-10-13 22:54:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:54:02,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:54:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:54:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 22:54:02,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:54:02,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376624624] [2021-10-13 22:54:02,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376624624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:54:02,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:54:02,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:54:02,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204835684] [2021-10-13 22:54:02,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:54:02,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:54:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:54:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:54:02,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2021-10-13 22:54:02,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 250 transitions, 3034 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:02,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:54:02,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2021-10-13 22:54:02,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:54:12,623 INFO L129 PetriNetUnfolder]: 43583/85775 cut-off events. [2021-10-13 22:54:12,623 INFO L130 PetriNetUnfolder]: For 416661/1666698 co-relation queries the response was YES. [2021-10-13 22:54:13,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340172 conditions, 85775 events. 43583/85775 cut-off events. For 416661/1666698 co-relation queries the response was YES. Maximal size of possible extension queue 4562. Compared 1003860 event pairs, 7211 based on Foata normal form. 1428/76806 useless extension candidates. Maximal degree in co-relation 340113. Up to 20330 conditions per place. [2021-10-13 22:54:14,107 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 161 selfloop transitions, 200 changer transitions 0/421 dead transitions. [2021-10-13 22:54:14,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 421 transitions, 5911 flow [2021-10-13 22:54:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:54:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-13 22:54:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2021-10-13 22:54:14,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7717231222385862 [2021-10-13 22:54:14,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2021-10-13 22:54:14,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2021-10-13 22:54:14,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:54:14,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2021-10-13 22:54:14,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:14,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:14,112 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:14,112 INFO L186 Difference]: Start difference. First operand has 126 places, 250 transitions, 3034 flow. Second operand 7 states and 524 transitions. [2021-10-13 22:54:14,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 421 transitions, 5911 flow [2021-10-13 22:54:16,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 421 transitions, 5911 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-13 22:54:16,899 INFO L242 Difference]: Finished difference. Result has 136 places, 343 transitions, 5397 flow [2021-10-13 22:54:16,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5397, PETRI_PLACES=136, PETRI_TRANSITIONS=343} [2021-10-13 22:54:16,900 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 34 predicate places. [2021-10-13 22:54:16,900 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 343 transitions, 5397 flow [2021-10-13 22:54:16,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:16,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:54:16,901 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:54:16,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 22:54:16,901 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 22:54:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:54:16,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1018540610, now seen corresponding path program 1 times [2021-10-13 22:54:16,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:54:16,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630117887] [2021-10-13 22:54:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:54:16,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:54:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:54:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 22:54:16,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:54:16,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630117887] [2021-10-13 22:54:16,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630117887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:54:16,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:54:16,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:54:16,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744180105] [2021-10-13 22:54:16,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:54:16,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:54:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:54:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:54:16,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2021-10-13 22:54:16,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 343 transitions, 5397 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 22:54:16,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:54:16,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2021-10-13 22:54:16,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand