/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-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 23:38:06,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 23:38:06,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 23:38:06,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 23:38:06,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 23:38:06,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 23:38:06,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 23:38:06,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 23:38:06,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 23:38:06,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 23:38:06,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 23:38:06,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 23:38:06,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 23:38:06,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 23:38:06,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 23:38:06,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 23:38:06,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 23:38:06,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 23:38:06,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 23:38:06,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 23:38:06,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 23:38:06,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 23:38:06,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 23:38:06,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 23:38:06,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 23:38:06,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 23:38:06,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 23:38:06,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 23:38:06,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 23:38:06,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 23:38:06,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 23:38:06,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 23:38:06,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 23:38:06,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 23:38:06,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 23:38:06,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 23:38:06,972 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-OGIterative.epf [2021-08-12 23:38:07,012 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 23:38:07,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 23:38:07,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 23:38:07,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 23:38:07,017 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 23:38:07,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 23:38:07,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 23:38:07,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 23:38:07,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 23:38:07,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 23:38:07,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 23:38:07,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 23:38:07,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 23:38:07,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 23:38:07,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 23:38:07,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 23:38:07,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 23:38:07,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 23:38:07,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 23:38:07,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 23:38:07,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 23:38:07,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 23:38:07,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 23:38:07,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 23:38:07,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 23:38:07,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 23:38:07,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 23:38:07,020 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 23:38:07,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 23:38:07,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 23:38:07,021 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-12 23:38:07,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 23:38:07,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 23:38:07,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 23:38:07,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 23:38:07,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 23:38:07,371 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 23:38:07,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-08-12 23:38:07,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c08d3be6c/c1c670431ded4d529778289aec359c79/FLAG747468ed7 [2021-08-12 23:38:07,968 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 23:38:07,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-08-12 23:38:07,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c08d3be6c/c1c670431ded4d529778289aec359c79/FLAG747468ed7 [2021-08-12 23:38:08,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c08d3be6c/c1c670431ded4d529778289aec359c79 [2021-08-12 23:38:08,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 23:38:08,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 23:38:08,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 23:38:08,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 23:38:08,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 23:38:08,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 11:38:08" (1/1) ... [2021-08-12 23:38:08,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745b075b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:08, skipping insertion in model container [2021-08-12 23:38:08,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 11:38:08" (1/1) ... [2021-08-12 23:38:08,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 23:38:08,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 23:38:08,701 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-12 23:38:08,884 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-08-12 23:38:08,892 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-08-12 23:38:08,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 23:38:08,912 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 23:38:08,932 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-12 23:38:08,951 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-08-12 23:38:08,954 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-08-12 23:38:08,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 23:38:09,012 INFO L208 MainTranslator]: Completed translation [2021-08-12 23:38:09,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09 WrapperNode [2021-08-12 23:38:09,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 23:38:09,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 23:38:09,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 23:38:09,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 23:38:09,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 23:38:09,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 23:38:09,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 23:38:09,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 23:38:09,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... [2021-08-12 23:38:09,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 23:38:09,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 23:38:09,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 23:38:09,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 23:38:09,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 23:38:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-12 23:38:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-12 23:38:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 23:38:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-12 23:38:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-12 23:38:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 23:38:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 23:38:09,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 23:38:09,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 23:38:09,545 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-12 23:38:09,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 11:38:09 BoogieIcfgContainer [2021-08-12 23:38:09,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 23:38:09,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 23:38:09,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 23:38:09,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 23:38:09,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 11:38:08" (1/3) ... [2021-08-12 23:38:09,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795a1b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 11:38:09, skipping insertion in model container [2021-08-12 23:38:09,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:38:09" (2/3) ... [2021-08-12 23:38:09,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795a1b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 11:38:09, skipping insertion in model container [2021-08-12 23:38:09,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 11:38:09" (3/3) ... [2021-08-12 23:38:09,553 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-08-12 23:38:09,558 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 23:38:09,558 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-12 23:38:09,559 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 23:38:09,581 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,581 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,581 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,582 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,582 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,582 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,582 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,582 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,582 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,583 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,583 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,583 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,583 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,583 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,583 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,585 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,585 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,585 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,585 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,585 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,585 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,587 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,587 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,587 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,587 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,587 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,589 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,590 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,590 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,590 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,605 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,606 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,606 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:38:09,613 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-12 23:38:09,633 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-12 23:38:09,650 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 23:38:09,650 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 23:38:09,650 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 23:38:09,650 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 23:38:09,650 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 23:38:09,650 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 23:38:09,650 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 23:38:09,651 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 23:38:09,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 115 transitions, 252 flow [2021-08-12 23:38:09,695 INFO L129 PetriNetUnfolder]: 21/115 cut-off events. [2021-08-12 23:38:09,695 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-12 23:38:09,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 115 events. 21/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2021-08-12 23:38:09,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 115 transitions, 252 flow [2021-08-12 23:38:09,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 103 transitions, 218 flow [2021-08-12 23:38:09,716 INFO L129 PetriNetUnfolder]: 10/63 cut-off events. [2021-08-12 23:38:09,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 23:38:09,717 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:38:09,718 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:38:09,718 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:38:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:38:09,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1929720339, now seen corresponding path program 1 times [2021-08-12 23:38:09,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:38:09,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673497760] [2021-08-12 23:38:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:38:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:38:09,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:09,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:09,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:09,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:38:09,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:38:09,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673497760] [2021-08-12 23:38:09,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673497760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:38:09,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:38:09,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 23:38:09,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367063524] [2021-08-12 23:38:09,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 23:38:09,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:38:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 23:38:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 23:38:09,941 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 115 [2021-08-12 23:38:09,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 218 flow. Second operand has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:09,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:38:09,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 115 [2021-08-12 23:38:09,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:38:09,983 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2021-08-12 23:38:09,983 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-12 23:38:09,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 10/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 10/93 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-08-12 23:38:09,986 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 0 selfloop transitions, 0 changer transitions 0/93 dead transitions. [2021-08-12 23:38:09,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 198 flow [2021-08-12 23:38:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 23:38:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-08-12 23:38:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2021-08-12 23:38:10,000 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9565217391304348 [2021-08-12 23:38:10,000 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 220 transitions. [2021-08-12 23:38:10,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 220 transitions. [2021-08-12 23:38:10,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:38:10,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 220 transitions. [2021-08-12 23:38:10,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.0) internal successors, (220), 2 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) [2021-08-12 23:38:10,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,016 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,017 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 1 predicate places. [2021-08-12 23:38:10,017 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 198 flow [2021-08-12 23:38:10,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,017 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:38:10,018 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:38:10,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 23:38:10,018 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:38:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:38:10,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2126204053, now seen corresponding path program 1 times [2021-08-12 23:38:10,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:38:10,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018828891] [2021-08-12 23:38:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:38:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:38:10,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:38:10,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:38:10,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:38:10,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018828891] [2021-08-12 23:38:10,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018828891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:38:10,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:38:10,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 23:38:10,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789190218] [2021-08-12 23:38:10,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 23:38:10,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:38:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 23:38:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 23:38:10,116 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 115 [2021-08-12 23:38:10,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:38:10,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 115 [2021-08-12 23:38:10,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:38:10,191 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2021-08-12 23:38:10,191 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-08-12 23:38:10,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 170 events. 22/170 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 514 event pairs, 2 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 209. Up to 18 conditions per place. [2021-08-12 23:38:10,197 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 7 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2021-08-12 23:38:10,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 224 flow [2021-08-12 23:38:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 23:38:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 23:38:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-08-12 23:38:10,203 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8869565217391304 [2021-08-12 23:38:10,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-08-12 23:38:10,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-08-12 23:38:10,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:38:10,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-08-12 23:38:10,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,211 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2021-08-12 23:38:10,211 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 224 flow [2021-08-12 23:38:10,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,219 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:38:10,219 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:38:10,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 23:38:10,219 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:38:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:38:10,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1906086302, now seen corresponding path program 1 times [2021-08-12 23:38:10,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:38:10,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179159425] [2021-08-12 23:38:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:38:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:38:10,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 23:38:10,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:38:10,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:38:10,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179159425] [2021-08-12 23:38:10,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179159425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:38:10,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:38:10,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 23:38:10,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191309028] [2021-08-12 23:38:10,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 23:38:10,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:38:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 23:38:10,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 23:38:10,299 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 115 [2021-08-12 23:38:10,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:38:10,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 115 [2021-08-12 23:38:10,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:38:10,365 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2021-08-12 23:38:10,366 INFO L130 PetriNetUnfolder]: For 11/17 co-relation queries the response was YES. [2021-08-12 23:38:10,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 149 events. 16/149 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 394 event pairs, 2 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 197. Up to 11 conditions per place. [2021-08-12 23:38:10,367 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 6 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2021-08-12 23:38:10,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 232 flow [2021-08-12 23:38:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 23:38:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 23:38:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-08-12 23:38:10,368 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.881159420289855 [2021-08-12 23:38:10,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-08-12 23:38:10,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-08-12 23:38:10,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:38:10,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-08-12 23:38:10,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,372 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2021-08-12 23:38:10,372 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 232 flow [2021-08-12 23:38:10,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,372 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:38:10,372 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:38:10,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 23:38:10,373 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:38:10,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:38:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash -429576492, now seen corresponding path program 1 times [2021-08-12 23:38:10,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:38:10,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93006864] [2021-08-12 23:38:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:38:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:38:10,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:38:10,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 23:38:10,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:38:10,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:38:10,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93006864] [2021-08-12 23:38:10,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93006864] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:38:10,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:38:10,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 23:38:10,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402721117] [2021-08-12 23:38:10,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 23:38:10,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:38:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 23:38:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 23:38:10,464 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-08-12 23:38:10,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:38:10,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-08-12 23:38:10,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:38:10,617 INFO L129 PetriNetUnfolder]: 163/660 cut-off events. [2021-08-12 23:38:10,617 INFO L130 PetriNetUnfolder]: For 55/57 co-relation queries the response was YES. [2021-08-12 23:38:10,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 660 events. 163/660 cut-off events. For 55/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4011 event pairs, 62 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 1060. Up to 174 conditions per place. [2021-08-12 23:38:10,621 INFO L132 encePairwiseOnDemand]: 98/115 looper letters, 31 selfloop transitions, 6 changer transitions 30/135 dead transitions. [2021-08-12 23:38:10,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 135 transitions, 451 flow [2021-08-12 23:38:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 23:38:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 23:38:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-08-12 23:38:10,623 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8208695652173913 [2021-08-12 23:38:10,623 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-08-12 23:38:10,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-08-12 23:38:10,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:38:10,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-08-12 23:38:10,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,627 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,627 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2021-08-12 23:38:10,627 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 135 transitions, 451 flow [2021-08-12 23:38:10,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,628 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:38:10,628 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:38:10,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 23:38:10,628 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:38:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:38:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash -267242538, now seen corresponding path program 2 times [2021-08-12 23:38:10,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:38:10,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870012969] [2021-08-12 23:38:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:38:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:38:10,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:38:10,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:38:10,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:10,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:38:10,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:38:10,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870012969] [2021-08-12 23:38:10,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870012969] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:38:10,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:38:10,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 23:38:10,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405589036] [2021-08-12 23:38:10,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 23:38:10,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:38:10,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 23:38:10,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 23:38:10,695 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-08-12 23:38:10,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 135 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:38:10,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-08-12 23:38:10,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:38:10,950 INFO L129 PetriNetUnfolder]: 395/1307 cut-off events. [2021-08-12 23:38:10,950 INFO L130 PetriNetUnfolder]: For 88/90 co-relation queries the response was YES. [2021-08-12 23:38:10,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 1307 events. 395/1307 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9288 event pairs, 148 based on Foata normal form. 0/1115 useless extension candidates. Maximal degree in co-relation 2517. Up to 361 conditions per place. [2021-08-12 23:38:10,960 INFO L132 encePairwiseOnDemand]: 98/115 looper letters, 42 selfloop transitions, 14 changer transitions 36/175 dead transitions. [2021-08-12 23:38:10,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 175 transitions, 663 flow [2021-08-12 23:38:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 23:38:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 23:38:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 471 transitions. [2021-08-12 23:38:10,962 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8191304347826087 [2021-08-12 23:38:10,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 471 transitions. [2021-08-12 23:38:10,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 471 transitions. [2021-08-12 23:38:10,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:38:10,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 471 transitions. [2021-08-12 23:38:10,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,966 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,966 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2021-08-12 23:38:10,966 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 175 transitions, 663 flow [2021-08-12 23:38:10,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:10,966 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:38:10,967 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:38:10,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 23:38:10,967 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:38:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:38:10,967 INFO L82 PathProgramCache]: Analyzing trace with hash -333500082, now seen corresponding path program 3 times [2021-08-12 23:38:10,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:38:10,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828844505] [2021-08-12 23:38:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:38:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:38:11,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:11,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:11,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:11,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:38:11,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:11,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:38:11,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:38:11,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:38:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:38:11,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:38:11,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828844505] [2021-08-12 23:38:11,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828844505] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:38:11,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:38:11,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 23:38:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875912432] [2021-08-12 23:38:11,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 23:38:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:38:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 23:38:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 23:38:11,025 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-08-12 23:38:11,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 175 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:11,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:38:11,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-08-12 23:38:11,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:38:11,277 INFO L129 PetriNetUnfolder]: 449/1476 cut-off events. [2021-08-12 23:38:11,277 INFO L130 PetriNetUnfolder]: For 288/358 co-relation queries the response was YES. [2021-08-12 23:38:11,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 1476 events. 449/1476 cut-off events. For 288/358 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10709 event pairs, 80 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 3325. Up to 465 conditions per place. [2021-08-12 23:38:11,285 INFO L132 encePairwiseOnDemand]: 97/115 looper letters, 0 selfloop transitions, 0 changer transitions 222/222 dead transitions. [2021-08-12 23:38:11,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 222 transitions, 1087 flow [2021-08-12 23:38:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 23:38:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 23:38:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-08-12 23:38:11,287 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8208695652173913 [2021-08-12 23:38:11,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-08-12 23:38:11,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-08-12 23:38:11,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:38:11,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-08-12 23:38:11,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:11,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:11,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:11,291 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2021-08-12 23:38:11,291 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 222 transitions, 1087 flow [2021-08-12 23:38:11,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:38:11,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown