/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:38:29,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:38:29,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:38:29,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:38:29,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:38:29,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:38:29,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:38:29,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:38:29,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:38:29,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:38:29,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:38:29,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:38:29,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:38:29,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:38:29,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:38:29,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:38:29,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:38:29,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:38:29,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:38:29,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:38:29,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:38:29,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:38:29,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:38:29,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:38:29,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:38:29,690 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:38:29,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:38:29,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:38:29,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:38:29,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:38:29,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:38:29,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:38:29,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:38:29,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:38:29,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:38:29,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:38:29,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:38:29,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:38:29,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:38:29,982 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:38:29,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-03-11 02:38:30,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e0b684d/527e54e4afd3439ab0f4d59c9a786af7/FLAG8487485d5 [2021-03-11 02:38:30,454 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:38:30,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-03-11 02:38:30,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e0b684d/527e54e4afd3439ab0f4d59c9a786af7/FLAG8487485d5 [2021-03-11 02:38:30,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e0b684d/527e54e4afd3439ab0f4d59c9a786af7 [2021-03-11 02:38:30,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:38:30,478 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:38:30,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:38:30,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:38:30,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:38:30,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33505e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30, skipping insertion in model container [2021-03-11 02:38:30,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:38:30,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:38:30,610 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-03-11 02:38:30,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:38:30,744 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:38:30,751 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-03-11 02:38:30,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:38:30,816 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:38:30,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30 WrapperNode [2021-03-11 02:38:30,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:38:30,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:38:30,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:38:30,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:38:30,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:38:30,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:38:30,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:38:30,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:38:30,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... [2021-03-11 02:38:30,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:38:30,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:38:30,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:38:30,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:38:30,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:38:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:38:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:38:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:38:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:38:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:38:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:38:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:38:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:38:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:38:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:38:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:38:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:38:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:38:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:38:30,904 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:38:31,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:38:31,156 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:38:31,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:38:31 BoogieIcfgContainer [2021-03-11 02:38:31,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:38:31,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:38:31,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:38:31,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:38:31,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:38:30" (1/3) ... [2021-03-11 02:38:31,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77451cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:38:31, skipping insertion in model container [2021-03-11 02:38:31,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:30" (2/3) ... [2021-03-11 02:38:31,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77451cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:38:31, skipping insertion in model container [2021-03-11 02:38:31,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:38:31" (3/3) ... [2021-03-11 02:38:31,162 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2021-03-11 02:38:31,166 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:38:31,169 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:38:31,170 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:38:31,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,192 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:31,197 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:38:31,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:38:31,222 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:38:31,223 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:38:31,223 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:38:31,223 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:38:31,223 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:38:31,223 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:38:31,223 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:38:31,223 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:38:31,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:38:31,251 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 02:38:31,252 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:38:31,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:38:31,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:38:31,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 02:38:31,267 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 02:38:31,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:38:31,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:31,268 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:31,268 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:31,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2092073770, now seen corresponding path program 1 times [2021-03-11 02:38:31,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:31,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147348864] [2021-03-11 02:38:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:31,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:31,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:31,452 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:31,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:31,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:31,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:31,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:31,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147348864] [2021-03-11 02:38:31,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:31,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:38:31,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144371812] [2021-03-11 02:38:31,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:38:31,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:38:31,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:38:31,541 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 75 [2021-03-11 02:38:31,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:31,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 75 [2021-03-11 02:38:31,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:31,705 INFO L129 PetriNetUnfolder]: 24/134 cut-off events. [2021-03-11 02:38:31,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:38:31,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 134 events. 24/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 427 event pairs, 5 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 176. Up to 31 conditions per place. [2021-03-11 02:38:31,710 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 8 selfloop transitions, 3 changer transitions 19/80 dead transitions. [2021-03-11 02:38:31,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 229 flow [2021-03-11 02:38:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:38:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:38:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 592 transitions. [2021-03-11 02:38:31,726 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8770370370370371 [2021-03-11 02:38:31,727 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 592 transitions. [2021-03-11 02:38:31,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 592 transitions. [2021-03-11 02:38:31,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:31,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 592 transitions. [2021-03-11 02:38:31,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.77777777777777) internal successors, (592), 9 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,742 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,743 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 9 states and 592 transitions. [2021-03-11 02:38:31,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 229 flow [2021-03-11 02:38:31,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:38:31,748 INFO L241 Difference]: Finished difference. Result has 81 places, 61 transitions, 167 flow [2021-03-11 02:38:31,749 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2021-03-11 02:38:31,750 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 12 predicate places. [2021-03-11 02:38:31,750 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 167 flow [2021-03-11 02:38:31,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:31,750 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:31,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:38:31,751 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2093227861, now seen corresponding path program 1 times [2021-03-11 02:38:31,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:31,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008106140] [2021-03-11 02:38:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:31,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:31,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:31,803 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:38:31,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:38:31,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:38:31,823 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:38:31,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:31,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:31,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:31,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008106140] [2021-03-11 02:38:31,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:31,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:38:31,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684383354] [2021-03-11 02:38:31,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:38:31,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:38:31,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:38:31,834 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:38:31,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:31,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:38:31,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:31,961 INFO L129 PetriNetUnfolder]: 166/440 cut-off events. [2021-03-11 02:38:31,961 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2021-03-11 02:38:31,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 440 events. 166/440 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2516 event pairs, 14 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 877. Up to 104 conditions per place. [2021-03-11 02:38:31,965 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 21 selfloop transitions, 15 changer transitions 5/91 dead transitions. [2021-03-11 02:38:31,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 309 flow [2021-03-11 02:38:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:38:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:38:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-03-11 02:38:31,967 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-03-11 02:38:31,968 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-03-11 02:38:31,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-03-11 02:38:31,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:31,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-03-11 02:38:31,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,971 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,971 INFO L185 Difference]: Start difference. First operand has 81 places, 61 transitions, 167 flow. Second operand 10 states and 653 transitions. [2021-03-11 02:38:31,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 309 flow [2021-03-11 02:38:31,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 91 transitions, 300 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 02:38:31,974 INFO L241 Difference]: Finished difference. Result has 86 places, 74 transitions, 267 flow [2021-03-11 02:38:31,974 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=267, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2021-03-11 02:38:31,975 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 17 predicate places. [2021-03-11 02:38:31,975 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 267 flow [2021-03-11 02:38:31,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:31,975 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:31,976 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:31,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:38:31,976 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1997653096, now seen corresponding path program 1 times [2021-03-11 02:38:31,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:31,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084941681] [2021-03-11 02:38:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:32,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:32,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:32,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:32,022 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:38:32,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:38:32,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:38:32,046 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:38:32,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:32,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:32,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084941681] [2021-03-11 02:38:32,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:32,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:32,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199089782] [2021-03-11 02:38:32,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:32,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:32,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:32,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:32,059 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:38:32,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:32,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:38:32,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:32,271 INFO L129 PetriNetUnfolder]: 146/409 cut-off events. [2021-03-11 02:38:32,271 INFO L130 PetriNetUnfolder]: For 908/974 co-relation queries the response was YES. [2021-03-11 02:38:32,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 409 events. 146/409 cut-off events. For 908/974 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2307 event pairs, 4 based on Foata normal form. 27/418 useless extension candidates. Maximal degree in co-relation 1316. Up to 152 conditions per place. [2021-03-11 02:38:32,276 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 20 selfloop transitions, 28 changer transitions 11/109 dead transitions. [2021-03-11 02:38:32,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 609 flow [2021-03-11 02:38:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:38:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:38:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 848 transitions. [2021-03-11 02:38:32,280 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8697435897435898 [2021-03-11 02:38:32,282 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 848 transitions. [2021-03-11 02:38:32,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 848 transitions. [2021-03-11 02:38:32,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:32,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 848 transitions. [2021-03-11 02:38:32,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.23076923076923) internal successors, (848), 13 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,286 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,286 INFO L185 Difference]: Start difference. First operand has 86 places, 74 transitions, 267 flow. Second operand 13 states and 848 transitions. [2021-03-11 02:38:32,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 609 flow [2021-03-11 02:38:32,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 109 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 02:38:32,293 INFO L241 Difference]: Finished difference. Result has 103 places, 91 transitions, 491 flow [2021-03-11 02:38:32,293 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=491, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2021-03-11 02:38:32,293 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 34 predicate places. [2021-03-11 02:38:32,293 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 491 flow [2021-03-11 02:38:32,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,293 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:32,293 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:32,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:38:32,294 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:32,294 INFO L82 PathProgramCache]: Analyzing trace with hash 205922990, now seen corresponding path program 1 times [2021-03-11 02:38:32,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:32,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658462292] [2021-03-11 02:38:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:32,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:32,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:32,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:32,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:32,385 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:38:32,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:38:32,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:38:32,415 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:38:32,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:32,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:32,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658462292] [2021-03-11 02:38:32,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:32,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:38:32,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093247911] [2021-03-11 02:38:32,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:38:32,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:32,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:38:32,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:38:32,430 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:38:32,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 491 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:32,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:38:32,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:32,655 INFO L129 PetriNetUnfolder]: 99/335 cut-off events. [2021-03-11 02:38:32,655 INFO L130 PetriNetUnfolder]: For 1433/1517 co-relation queries the response was YES. [2021-03-11 02:38:32,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 335 events. 99/335 cut-off events. For 1433/1517 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1984 event pairs, 0 based on Foata normal form. 27/345 useless extension candidates. Maximal degree in co-relation 1373. Up to 112 conditions per place. [2021-03-11 02:38:32,658 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 16 selfloop transitions, 32 changer transitions 19/117 dead transitions. [2021-03-11 02:38:32,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 807 flow [2021-03-11 02:38:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 02:38:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 02:38:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1028 transitions. [2021-03-11 02:38:32,661 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8566666666666667 [2021-03-11 02:38:32,661 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1028 transitions. [2021-03-11 02:38:32,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1028 transitions. [2021-03-11 02:38:32,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:32,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1028 transitions. [2021-03-11 02:38:32,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 64.25) internal successors, (1028), 16 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,665 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,665 INFO L185 Difference]: Start difference. First operand has 103 places, 91 transitions, 491 flow. Second operand 16 states and 1028 transitions. [2021-03-11 02:38:32,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 807 flow [2021-03-11 02:38:32,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 719 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-03-11 02:38:32,673 INFO L241 Difference]: Finished difference. Result has 118 places, 92 transitions, 517 flow [2021-03-11 02:38:32,674 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=517, PETRI_PLACES=118, PETRI_TRANSITIONS=92} [2021-03-11 02:38:32,674 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 49 predicate places. [2021-03-11 02:38:32,674 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 92 transitions, 517 flow [2021-03-11 02:38:32,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,674 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:32,674 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:32,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:38:32,674 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash -354085076, now seen corresponding path program 1 times [2021-03-11 02:38:32,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:32,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568958175] [2021-03-11 02:38:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:32,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:32,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:32,739 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:38:32,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:38:32,749 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:32,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:32,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:32,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:32,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:32,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:32,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568958175] [2021-03-11 02:38:32,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:32,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:32,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598829709] [2021-03-11 02:38:32,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:32,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:32,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:32,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:32,794 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:38:32,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 92 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:32,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:38:32,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:32,979 INFO L129 PetriNetUnfolder]: 175/883 cut-off events. [2021-03-11 02:38:32,979 INFO L130 PetriNetUnfolder]: For 2102/2193 co-relation queries the response was YES. [2021-03-11 02:38:32,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 883 events. 175/883 cut-off events. For 2102/2193 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8285 event pairs, 0 based on Foata normal form. 3/834 useless extension candidates. Maximal degree in co-relation 2816. Up to 125 conditions per place. [2021-03-11 02:38:32,986 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 17 selfloop transitions, 13 changer transitions 4/109 dead transitions. [2021-03-11 02:38:32,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 109 transitions, 635 flow [2021-03-11 02:38:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:38:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:38:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2021-03-11 02:38:32,987 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2021-03-11 02:38:32,988 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2021-03-11 02:38:32,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2021-03-11 02:38:32,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:32,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2021-03-11 02:38:32,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,991 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:32,991 INFO L185 Difference]: Start difference. First operand has 118 places, 92 transitions, 517 flow. Second operand 8 states and 478 transitions. [2021-03-11 02:38:32,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 109 transitions, 635 flow [2021-03-11 02:38:33,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 538 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-03-11 02:38:33,006 INFO L241 Difference]: Finished difference. Result has 113 places, 103 transitions, 524 flow [2021-03-11 02:38:33,006 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2021-03-11 02:38:33,007 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2021-03-11 02:38:33,007 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 524 flow [2021-03-11 02:38:33,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:33,007 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:33,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:38:33,007 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash -188645648, now seen corresponding path program 2 times [2021-03-11 02:38:33,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:33,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099283782] [2021-03-11 02:38:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:33,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:33,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:33,068 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:38:33,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:38:33,078 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:33,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:33,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:33,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:33,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:33,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099283782] [2021-03-11 02:38:33,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:33,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:33,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30385224] [2021-03-11 02:38:33,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:33,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:33,108 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2021-03-11 02:38:33,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:33,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2021-03-11 02:38:33,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:33,261 INFO L129 PetriNetUnfolder]: 219/1094 cut-off events. [2021-03-11 02:38:33,261 INFO L130 PetriNetUnfolder]: For 1527/1686 co-relation queries the response was YES. [2021-03-11 02:38:33,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1094 events. 219/1094 cut-off events. For 1527/1686 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10940 event pairs, 0 based on Foata normal form. 7/1040 useless extension candidates. Maximal degree in co-relation 3049. Up to 132 conditions per place. [2021-03-11 02:38:33,267 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 13 selfloop transitions, 5 changer transitions 20/112 dead transitions. [2021-03-11 02:38:33,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 634 flow [2021-03-11 02:38:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:38:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:38:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 430 transitions. [2021-03-11 02:38:33,269 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-03-11 02:38:33,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 430 transitions. [2021-03-11 02:38:33,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 430 transitions. [2021-03-11 02:38:33,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:33,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 430 transitions. [2021-03-11 02:38:33,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,271 INFO L185 Difference]: Start difference. First operand has 113 places, 103 transitions, 524 flow. Second operand 7 states and 430 transitions. [2021-03-11 02:38:33,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 634 flow [2021-03-11 02:38:33,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 622 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-11 02:38:33,294 INFO L241 Difference]: Finished difference. Result has 118 places, 91 transitions, 463 flow [2021-03-11 02:38:33,294 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=118, PETRI_TRANSITIONS=91} [2021-03-11 02:38:33,294 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 49 predicate places. [2021-03-11 02:38:33,294 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 91 transitions, 463 flow [2021-03-11 02:38:33,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,294 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:33,295 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:33,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:38:33,295 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:33,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1005020640, now seen corresponding path program 3 times [2021-03-11 02:38:33,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:33,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140725509] [2021-03-11 02:38:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:33,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:33,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:33,353 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:38:33,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:38:33,359 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:33,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:33,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:33,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:33,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:33,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:33,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140725509] [2021-03-11 02:38:33,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:33,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:33,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557607123] [2021-03-11 02:38:33,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:33,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:33,390 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:38:33,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 91 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:33,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:38:33,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:33,483 INFO L129 PetriNetUnfolder]: 65/435 cut-off events. [2021-03-11 02:38:33,483 INFO L130 PetriNetUnfolder]: For 645/657 co-relation queries the response was YES. [2021-03-11 02:38:33,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 435 events. 65/435 cut-off events. For 645/657 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3292 event pairs, 0 based on Foata normal form. 3/421 useless extension candidates. Maximal degree in co-relation 1209. Up to 60 conditions per place. [2021-03-11 02:38:33,485 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2021-03-11 02:38:33,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 91 transitions, 511 flow [2021-03-11 02:38:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:38:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:38:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 465 transitions. [2021-03-11 02:38:33,487 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.775 [2021-03-11 02:38:33,487 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 465 transitions. [2021-03-11 02:38:33,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 465 transitions. [2021-03-11 02:38:33,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:33,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 465 transitions. [2021-03-11 02:38:33,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.125) internal successors, (465), 8 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,489 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,489 INFO L185 Difference]: Start difference. First operand has 118 places, 91 transitions, 463 flow. Second operand 8 states and 465 transitions. [2021-03-11 02:38:33,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 91 transitions, 511 flow [2021-03-11 02:38:33,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 91 transitions, 478 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-03-11 02:38:33,493 INFO L241 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2021-03-11 02:38:33,493 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2021-03-11 02:38:33,493 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2021-03-11 02:38:33,493 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2021-03-11 02:38:33,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:33,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:38:33,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:38:33 BasicIcfg [2021-03-11 02:38:33,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:38:33,500 INFO L168 Benchmark]: Toolchain (without parser) took 3022.21 ms. Allocated memory was 341.8 MB in the beginning and 411.0 MB in the end (delta: 69.2 MB). Free memory was 305.3 MB in the beginning and 238.5 MB in the end (delta: 66.8 MB). Peak memory consumption was 137.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:33,501 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 341.8 MB. Free memory was 323.2 MB in the beginning and 323.2 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:38:33,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.68 ms. Allocated memory is still 341.8 MB. Free memory was 304.7 MB in the beginning and 303.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:33,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.88 ms. Allocated memory is still 341.8 MB. Free memory was 303.5 MB in the beginning and 301.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:33,504 INFO L168 Benchmark]: Boogie Preprocessor took 13.69 ms. Allocated memory is still 341.8 MB. Free memory was 301.4 MB in the beginning and 300.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:33,505 INFO L168 Benchmark]: RCFGBuilder took 302.57 ms. Allocated memory is still 341.8 MB. Free memory was 300.4 MB in the beginning and 275.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:33,505 INFO L168 Benchmark]: TraceAbstraction took 2339.06 ms. Allocated memory was 341.8 MB in the beginning and 411.0 MB in the end (delta: 69.2 MB). Free memory was 275.2 MB in the beginning and 238.5 MB in the end (delta: 36.7 MB). Peak memory consumption was 107.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:33,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 341.8 MB. Free memory was 323.2 MB in the beginning and 323.2 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 337.68 ms. Allocated memory is still 341.8 MB. Free memory was 304.7 MB in the beginning and 303.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.88 ms. Allocated memory is still 341.8 MB. Free memory was 303.5 MB in the beginning and 301.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.69 ms. Allocated memory is still 341.8 MB. Free memory was 301.4 MB in the beginning and 300.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 302.57 ms. Allocated memory is still 341.8 MB. Free memory was 300.4 MB in the beginning and 275.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2339.06 ms. Allocated memory was 341.8 MB in the beginning and 411.0 MB in the end (delta: 69.2 MB). Free memory was 275.2 MB in the beginning and 238.5 MB in the end (delta: 36.7 MB). Peak memory consumption was 107.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2274.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1340.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 179 SDslu, 257 SDs, 0 SdLazy, 279 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 699.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=524occurred in iteration=5, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.1ms SsaConstructionTime, 132.4ms SatisfiabilityAnalysisTime, 606.3ms InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 1121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...