/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:36:24,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:36:24,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:36:24,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:36:24,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:36:24,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:36:24,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:36:24,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:36:24,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:36:24,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:36:24,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:36:24,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:36:24,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:36:24,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:36:24,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:36:24,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:36:24,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:36:24,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:36:24,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:36:24,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:36:24,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:36:24,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:36:24,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:36:24,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:36:24,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:36:24,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:36:24,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:36:24,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:36:24,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:36:24,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:36:24,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:36:24,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:36:24,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:36:24,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:36:24,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:36:24,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:36:24,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:36:24,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:36:24,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:36:24,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:36:24,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:36:24,960 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-SemanticLbe.epf [2020-10-16 01:36:24,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:36:24,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:36:24,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:36:24,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:36:24,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:36:24,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:36:24,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:36:24,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:36:24,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:36:24,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:36:24,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:36:24,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:36:24,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:36:24,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:36:24,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:36:24,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:36:24,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:36:24,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:36:24,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:36:24,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:36:24,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:36:24,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:36:24,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:36:24,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:36:24,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:36:24,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:36:24,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:36:24,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:36:24,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:36:25,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:36:25,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:36:25,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:36:25,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:36:25,337 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:36:25,338 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-16 01:36:25,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0b42eb4/43c9ff58712041d4a8b6a95111264add/FLAG72c152d59 [2020-10-16 01:36:25,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:36:25,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-16 01:36:25,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0b42eb4/43c9ff58712041d4a8b6a95111264add/FLAG72c152d59 [2020-10-16 01:36:26,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0b42eb4/43c9ff58712041d4a8b6a95111264add [2020-10-16 01:36:26,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:36:26,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:36:26,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:36:26,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:36:26,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:36:26,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d62d0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26, skipping insertion in model container [2020-10-16 01:36:26,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:36:26,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:36:26,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:36:26,680 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:36:26,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:36:26,919 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:36:26,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26 WrapperNode [2020-10-16 01:36:26,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:36:26,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:36:26,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:36:26,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:36:26,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:36:26,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:36:26,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:36:26,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:36:26,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:26,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (1/1) ... [2020-10-16 01:36:27,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:36:27,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:36:27,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:36:27,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:36:27,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (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 [2020-10-16 01:36:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:36:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:36:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:36:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:36:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:36:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:36:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:36:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:36:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:36:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:36:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:36:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:36:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:36:27,082 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:36:27,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:36:27,407 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:36:27,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:27 BoogieIcfgContainer [2020-10-16 01:36:27,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:36:27,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:36:27,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:36:27,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:36:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:36:26" (1/3) ... [2020-10-16 01:36:27,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e43494e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:27, skipping insertion in model container [2020-10-16 01:36:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:26" (2/3) ... [2020-10-16 01:36:27,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e43494e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:27, skipping insertion in model container [2020-10-16 01:36:27,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:27" (3/3) ... [2020-10-16 01:36:27,419 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-10-16 01:36:27,434 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:36:27,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:36:27,443 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:36:27,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,521 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,521 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,535 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,547 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:27,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:36:27,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:36:27,586 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:36:27,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:36:27,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:36:27,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:36:27,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:36:27,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:36:27,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:36:27,599 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:36:27,645 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:36:27,646 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:27,651 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:36:27,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:36:27,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:27,660 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:36:27,662 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:27,665 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:27,665 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:27,695 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:36:27,695 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:27,696 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:36:27,699 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:36:29,038 INFO L132 LiptonReduction]: Checked pairs total: 1702 [2020-10-16 01:36:29,038 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:36:29,041 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1383 [2020-10-16 01:36:29,049 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 01:36:29,050 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:29,050 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,051 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,051 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,057 INFO L82 PathProgramCache]: Analyzing trace with hash 967519021, now seen corresponding path program 1 times [2020-10-16 01:36:29,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303344924] [2020-10-16 01:36:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:29,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303344924] [2020-10-16 01:36:29,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:29,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:36:29,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554778390] [2020-10-16 01:36:29,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:36:29,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:29,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:36:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:36:29,298 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:36:29,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:36:29,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:29,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:36:29,302 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:29,324 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:36:29,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:29,325 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:36:29,326 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:36:29,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:36:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:36:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:36:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:36:29,342 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:36:29,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:36:29,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:36:29,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:29,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:36:29,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:36:29,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:36:29,359 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:36:29,361 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:36:29,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:36:29,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:36:29,367 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:36:29,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:36:29,371 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:36:29,371 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:36:29,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:36:29,371 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,372 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:36:29,372 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash -71682266, now seen corresponding path program 1 times [2020-10-16 01:36:29,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840919279] [2020-10-16 01:36:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:29,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840919279] [2020-10-16 01:36:29,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:29,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:36:29,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364581745] [2020-10-16 01:36:29,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:36:29,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:36:29,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:36:29,492 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:36:29,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 01:36:29,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:29,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:36:29,493 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:29,504 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:36:29,505 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:36:29,505 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 17 events. 0/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:36:29,505 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:36:29,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 54 flow [2020-10-16 01:36:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:36:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:36:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:36:29,509 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:36:29,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:36:29,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:36:29,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:29,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:36:29,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:36:29,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:36:29,513 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:36:29,514 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:36:29,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 54 flow [2020-10-16 01:36:29,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:36:29,515 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2020-10-16 01:36:29,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2020-10-16 01:36:29,516 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:36:29,517 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2020-10-16 01:36:29,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:36:29,517 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,517 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:36:29,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2072570189, now seen corresponding path program 1 times [2020-10-16 01:36:29,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490714283] [2020-10-16 01:36:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:29,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490714283] [2020-10-16 01:36:29,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:29,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:29,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145348061] [2020-10-16 01:36:29,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:29,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:29,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:29,580 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:36:29,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand 4 states. [2020-10-16 01:36:29,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:29,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:36:29,581 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:29,633 INFO L129 PetriNetUnfolder]: 10/56 cut-off events. [2020-10-16 01:36:29,633 INFO L130 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2020-10-16 01:36:29,634 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 56 events. 10/56 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 208 event pairs, 1 based on Foata normal form. 7/61 useless extension candidates. Maximal degree in co-relation 108. Up to 13 conditions per place. [2020-10-16 01:36:29,635 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 8 selfloop transitions, 4 changer transitions 1/24 dead transitions. [2020-10-16 01:36:29,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 99 flow [2020-10-16 01:36:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:36:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:36:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2020-10-16 01:36:29,639 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8175675675675675 [2020-10-16 01:36:29,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2020-10-16 01:36:29,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2020-10-16 01:36:29,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:29,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2020-10-16 01:36:29,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:36:29,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:36:29,643 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:36:29,643 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 4 states and 363 transitions. [2020-10-16 01:36:29,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 99 flow [2020-10-16 01:36:29,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:36:29,645 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 74 flow [2020-10-16 01:36:29,646 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 01:36:29,646 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:36:29,646 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 74 flow [2020-10-16 01:36:29,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:29,646 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,647 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:36:29,647 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash -175965771, now seen corresponding path program 1 times [2020-10-16 01:36:29,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975316547] [2020-10-16 01:36:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:29,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975316547] [2020-10-16 01:36:29,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:29,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:29,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328899798] [2020-10-16 01:36:29,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:29,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:29,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:29,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:29,711 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:36:29,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 74 flow. Second operand 4 states. [2020-10-16 01:36:29,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:29,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:36:29,712 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:29,758 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2020-10-16 01:36:29,759 INFO L130 PetriNetUnfolder]: For 37/41 co-relation queries the response was YES. [2020-10-16 01:36:29,759 INFO L80 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 42 events. 6/42 cut-off events. For 37/41 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 2 based on Foata normal form. 5/47 useless extension candidates. Maximal degree in co-relation 107. Up to 13 conditions per place. [2020-10-16 01:36:29,760 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 4 selfloop transitions, 3 changer transitions 4/22 dead transitions. [2020-10-16 01:36:29,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 109 flow [2020-10-16 01:36:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:36:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:36:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2020-10-16 01:36:29,762 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2020-10-16 01:36:29,762 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2020-10-16 01:36:29,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2020-10-16 01:36:29,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:29,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2020-10-16 01:36:29,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:36:29,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:36:29,765 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:36:29,765 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 74 flow. Second operand 4 states and 360 transitions. [2020-10-16 01:36:29,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 109 flow [2020-10-16 01:36:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 97 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:36:29,767 INFO L241 Difference]: Finished difference. Result has 32 places, 17 transitions, 66 flow [2020-10-16 01:36:29,767 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2020-10-16 01:36:29,768 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:36:29,768 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 66 flow [2020-10-16 01:36:29,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:29,768 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,768 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:36:29,769 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1030764699, now seen corresponding path program 1 times [2020-10-16 01:36:29,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739090266] [2020-10-16 01:36:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:29,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739090266] [2020-10-16 01:36:29,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:29,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:36:29,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470169272] [2020-10-16 01:36:29,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:29,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:29,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:29,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:29,810 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:36:29,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 66 flow. Second operand 4 states. [2020-10-16 01:36:29,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:29,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:36:29,811 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:29,841 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2020-10-16 01:36:29,841 INFO L130 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2020-10-16 01:36:29,842 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 26 events. 1/26 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 3/29 useless extension candidates. Maximal degree in co-relation 55. Up to 5 conditions per place. [2020-10-16 01:36:29,842 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 4 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2020-10-16 01:36:29,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 20 transitions, 97 flow [2020-10-16 01:36:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:36:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:36:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2020-10-16 01:36:29,845 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8036036036036036 [2020-10-16 01:36:29,845 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 446 transitions. [2020-10-16 01:36:29,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 446 transitions. [2020-10-16 01:36:29,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:29,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 446 transitions. [2020-10-16 01:36:29,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:36:29,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:36:29,848 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:36:29,848 INFO L185 Difference]: Start difference. First operand has 32 places, 17 transitions, 66 flow. Second operand 5 states and 446 transitions. [2020-10-16 01:36:29,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 20 transitions, 97 flow [2020-10-16 01:36:29,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 81 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-16 01:36:29,850 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 66 flow [2020-10-16 01:36:29,851 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2020-10-16 01:36:29,851 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:36:29,851 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 66 flow [2020-10-16 01:36:29,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:29,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:36:29,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1881279387, now seen corresponding path program 1 times [2020-10-16 01:36:29,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462071494] [2020-10-16 01:36:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:29,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462071494] [2020-10-16 01:36:29,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:29,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:29,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687940749] [2020-10-16 01:36:29,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:29,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:29,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:29,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:29,910 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 01:36:29,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 66 flow. Second operand 4 states. [2020-10-16 01:36:29,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:29,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 01:36:29,911 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:29,971 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:36:29,971 INFO L130 PetriNetUnfolder]: For 208/215 co-relation queries the response was YES. [2020-10-16 01:36:29,972 INFO L80 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 69 events. 28/69 cut-off events. For 208/215 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 206 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 172. Up to 45 conditions per place. [2020-10-16 01:36:29,972 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 01:36:29,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 118 flow [2020-10-16 01:36:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:36:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:36:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2020-10-16 01:36:29,975 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7711711711711712 [2020-10-16 01:36:29,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2020-10-16 01:36:29,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2020-10-16 01:36:29,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:29,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2020-10-16 01:36:29,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:36:29,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:36:29,978 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:36:29,978 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 66 flow. Second operand 5 states and 428 transitions. [2020-10-16 01:36:29,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 118 flow [2020-10-16 01:36:29,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 4 selfloop flow, removed 6 redundant places. [2020-10-16 01:36:29,980 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 01:36:29,981 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:36:29,981 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:36:29,981 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 01:36:29,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:29,981 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:29,982 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:29,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:36:29,982 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:29,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:29,982 INFO L82 PathProgramCache]: Analyzing trace with hash -936763998, now seen corresponding path program 1 times [2020-10-16 01:36:29,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:29,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107148704] [2020-10-16 01:36:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:30,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107148704] [2020-10-16 01:36:30,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:30,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:36:30,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131370936] [2020-10-16 01:36:30,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:36:30,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:30,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:36:30,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:36:30,036 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 01:36:30,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 01:36:30,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:30,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 01:36:30,037 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:30,096 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:36:30,096 INFO L130 PetriNetUnfolder]: For 80/124 co-relation queries the response was YES. [2020-10-16 01:36:30,097 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 80/124 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 168. Up to 35 conditions per place. [2020-10-16 01:36:30,098 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 01:36:30,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 01:36:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:36:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:36:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 01:36:30,100 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2020-10-16 01:36:30,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 01:36:30,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 01:36:30,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:30,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 01:36:30,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:36:30,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:36:30,104 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:36:30,104 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 513 transitions. [2020-10-16 01:36:30,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 01:36:30,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:36:30,106 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 01:36:30,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:36:30,107 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:36:30,107 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 01:36:30,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:36:30,107 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:30,107 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:30,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:36:30,108 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1322861499, now seen corresponding path program 1 times [2020-10-16 01:36:30,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:30,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791255142] [2020-10-16 01:36:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:30,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791255142] [2020-10-16 01:36:30,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:30,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:36:30,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897875536] [2020-10-16 01:36:30,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:36:30,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:30,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:36:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:36:30,163 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 01:36:30,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 01:36:30,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:30,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 01:36:30,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:30,231 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:36:30,231 INFO L130 PetriNetUnfolder]: For 112/155 co-relation queries the response was YES. [2020-10-16 01:36:30,231 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 112/155 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 01:36:30,232 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 01:36:30,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 01:36:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:36:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:36:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2020-10-16 01:36:30,235 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2020-10-16 01:36:30,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2020-10-16 01:36:30,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2020-10-16 01:36:30,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:30,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2020-10-16 01:36:30,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:36:30,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:36:30,239 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:36:30,239 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 592 transitions. [2020-10-16 01:36:30,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 01:36:30,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 01:36:30,242 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 01:36:30,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 01:36:30,242 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:36:30,243 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 01:36:30,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:36:30,243 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:30,243 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:30,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:36:30,243 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash 159865127, now seen corresponding path program 1 times [2020-10-16 01:36:30,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:30,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115180691] [2020-10-16 01:36:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:36:30,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115180691] [2020-10-16 01:36:30,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:30,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:36:30,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875864743] [2020-10-16 01:36:30,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:30,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:30,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:30,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:30,281 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 111 [2020-10-16 01:36:30,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states. [2020-10-16 01:36:30,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:30,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 111 [2020-10-16 01:36:30,282 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:30,303 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 01:36:30,304 INFO L130 PetriNetUnfolder]: For 45/50 co-relation queries the response was YES. [2020-10-16 01:36:30,304 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 25 events. 5/25 cut-off events. For 45/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 79. Up to 11 conditions per place. [2020-10-16 01:36:30,305 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:36:30,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 134 flow [2020-10-16 01:36:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:36:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:36:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2020-10-16 01:36:30,307 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 01:36:30,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2020-10-16 01:36:30,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2020-10-16 01:36:30,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:30,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2020-10-16 01:36:30,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:36:30,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:36:30,309 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:36:30,310 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states and 372 transitions. [2020-10-16 01:36:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 134 flow [2020-10-16 01:36:30,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 100 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 01:36:30,312 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:36:30,312 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 01:36:30,312 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:36:30,312 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:36:30,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:30,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:36:30,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:36:30 BasicIcfg [2020-10-16 01:36:30,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:36:30,325 INFO L168 Benchmark]: Toolchain (without parser) took 4091.90 ms. Allocated memory was 248.5 MB in the beginning and 367.0 MB in the end (delta: 118.5 MB). Free memory was 203.8 MB in the beginning and 235.2 MB in the end (delta: -31.5 MB). Peak memory consumption was 87.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,328 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 248.5 MB. Free memory was 226.6 MB in the beginning and 225.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.98 ms. Allocated memory was 248.5 MB in the beginning and 305.1 MB in the end (delta: 56.6 MB). Free memory was 202.9 MB in the beginning and 259.1 MB in the end (delta: -56.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.39 ms. Allocated memory is still 305.1 MB. Free memory was 259.1 MB in the beginning and 256.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,331 INFO L168 Benchmark]: Boogie Preprocessor took 27.36 ms. Allocated memory is still 305.1 MB. Free memory was 256.6 MB in the beginning and 254.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,332 INFO L168 Benchmark]: RCFGBuilder took 409.93 ms. Allocated memory is still 305.1 MB. Free memory was 254.9 MB in the beginning and 232.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,335 INFO L168 Benchmark]: TraceAbstraction took 2906.70 ms. Allocated memory was 305.1 MB in the beginning and 367.0 MB in the end (delta: 61.9 MB). Free memory was 232.1 MB in the beginning and 235.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 58.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:30,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 248.5 MB. Free memory was 226.6 MB in the beginning and 225.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 689.98 ms. Allocated memory was 248.5 MB in the beginning and 305.1 MB in the end (delta: 56.6 MB). Free memory was 202.9 MB in the beginning and 259.1 MB in the end (delta: -56.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.39 ms. Allocated memory is still 305.1 MB. Free memory was 259.1 MB in the beginning and 256.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.36 ms. Allocated memory is still 305.1 MB. Free memory was 256.6 MB in the beginning and 254.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 409.93 ms. Allocated memory is still 305.1 MB. Free memory was 254.9 MB in the beginning and 232.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2906.70 ms. Allocated memory was 305.1 MB in the beginning and 367.0 MB in the end (delta: 61.9 MB). Free memory was 232.1 MB in the beginning and 235.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 58.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 556 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1702 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 32 SDtfs, 21 SDslu, 19 SDs, 0 SdLazy, 131 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...