/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-SemanticLbe.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 20:30:18,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:30:18,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:30:18,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:30:18,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:30:18,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:30:18,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:30:18,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:30:18,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:30:18,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:30:18,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:30:18,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:30:18,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:30:18,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:30:18,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:30:18,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:30:18,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:30:18,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:30:18,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:30:18,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:30:18,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:30:18,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:30:18,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:30:18,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:30:18,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:30:18,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:30:18,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:30:18,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:30:18,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:30:18,719 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:30:18,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:30:18,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:30:18,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:30:18,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:30:18,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:30:18,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:30:18,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:30:18,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:30:18,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:30:18,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:30:18,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:30:18,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:30:18,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:30:18,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:30:18,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:30:18,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:30:18,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:30:18,960 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:30:18,961 INFO L432 ainManager$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 20:30:19,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad230d66d/49abddc26ddc42189eda13842a81ef49/FLAGf214f46fc [2021-03-11 20:30:19,439 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:30:19,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-03-11 20:30:19,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad230d66d/49abddc26ddc42189eda13842a81ef49/FLAGf214f46fc [2021-03-11 20:30:19,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad230d66d/49abddc26ddc42189eda13842a81ef49 [2021-03-11 20:30:19,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:30:19,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:30:19,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:30:19,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:30:19,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:30:19,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:30:19" (1/1) ... [2021-03-11 20:30:19,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c08ff98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:19, skipping insertion in model container [2021-03-11 20:30:19,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:30:19" (1/1) ... [2021-03-11 20:30:19,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:30:19,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:30:19,942 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 20:30:20,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:30:20,034 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:30:20,069 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 20:30:20,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:30:20,150 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:30:20,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20 WrapperNode [2021-03-11 20:30:20,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:30:20,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:30:20,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:30:20,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:30:20,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:30:20,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:30:20,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:30:20,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:30:20,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (1/1) ... [2021-03-11 20:30:20,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:30:20,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:30:20,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:30:20,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:30:20,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (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 20:30:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:30:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:30:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:30:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:30:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:30:20,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:30:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:30:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:30:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:30:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:30:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:30:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:30:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:30:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:30:20,255 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 20:30:20,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:30:20,569 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:30:20,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:30:20 BoogieIcfgContainer [2021-03-11 20:30:20,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:30:20,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:30:20,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:30:20,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:30:20,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:30:19" (1/3) ... [2021-03-11 20:30:20,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bff56e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:30:20, skipping insertion in model container [2021-03-11 20:30:20,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:30:20" (2/3) ... [2021-03-11 20:30:20,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bff56e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:30:20, skipping insertion in model container [2021-03-11 20:30:20,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:30:20" (3/3) ... [2021-03-11 20:30:20,578 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2021-03-11 20:30:20,582 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:30:20,585 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:30:20,586 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:30:20,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,619 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,619 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,619 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:30:20,635 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:30:20,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:30:20,672 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:30:20,673 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:30:20,673 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:30:20,673 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:30:20,673 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:30:20,673 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:30:20,673 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:30:20,673 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:30:20,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:30:20,724 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 20:30:20,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:30:20,729 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 20:30:20,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:30:20,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 20:30:20,736 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:30:20,747 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:30:20,749 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:30:20,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-11 20:30:20,759 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 20:30:20,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:30:20,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:30:20,760 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:30:22,247 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:30:22,434 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:30:22,512 INFO L131 LiptonReduction]: Checked pairs total: 1734 [2021-03-11 20:30:22,512 INFO L133 LiptonReduction]: Total number of compositions: 47 [2021-03-11 20:30:22,513 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1780 [2021-03-11 20:30:22,519 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-11 20:30:22,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:30:22,520 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:22,520 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:22,520 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:22,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2116140331, now seen corresponding path program 1 times [2021-03-11 20:30:22,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:22,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434377642] [2021-03-11 20:30:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:22,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:22,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:22,702 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 20:30:22,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434377642] [2021-03-11 20:30:22,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:22,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:30:22,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209452286] [2021-03-11 20:30:22,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:30:22,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:30:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:30:22,721 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 122 [2021-03-11 20:30:22,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 20:30:22,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:22,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 122 [2021-03-11 20:30:22,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:22,750 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-03-11 20:30:22,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:30:22,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 1 based on Foata normal form. 5/30 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2021-03-11 20:30:22,756 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-11 20:30:22,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2021-03-11 20:30:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:30:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:30:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2021-03-11 20:30:22,769 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8442622950819673 [2021-03-11 20:30:22,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2021-03-11 20:30:22,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2021-03-11 20:30:22,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:22,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2021-03-11 20:30:22,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 20:30:22,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 20:30:22,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 20:30:22,790 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 309 transitions. [2021-03-11 20:30:22,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2021-03-11 20:30:22,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:30:22,795 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2021-03-11 20:30:22,796 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2021-03-11 20:30:22,797 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-03-11 20:30:22,797 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2021-03-11 20:30:22,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 20:30:22,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:22,797 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:22,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:30:22,797 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:22,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:22,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1175841249, now seen corresponding path program 1 times [2021-03-11 20:30:22,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:22,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890756817] [2021-03-11 20:30:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:22,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:22,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:22,905 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:30:22,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:30:22,911 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 20:30:22,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890756817] [2021-03-11 20:30:22,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:22,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:30:22,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196838667] [2021-03-11 20:30:22,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:30:22,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:30:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:30:22,915 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:30:22,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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 20:30:22,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:22,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:30:22,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:22,963 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2021-03-11 20:30:22,963 INFO L130 PetriNetUnfolder]: For 15/20 co-relation queries the response was YES. [2021-03-11 20:30:22,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 96 events. 42/96 cut-off events. For 15/20 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 378 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 199. Up to 61 conditions per place. [2021-03-11 20:30:22,965 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2021-03-11 20:30:22,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 111 flow [2021-03-11 20:30:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:30:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:30:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-11 20:30:22,968 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7754098360655738 [2021-03-11 20:30:22,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-11 20:30:22,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-11 20:30:22,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:22,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-11 20:30:22,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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 20:30:22,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:30:22,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:30:22,972 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 5 states and 473 transitions. [2021-03-11 20:30:22,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 111 flow [2021-03-11 20:30:22,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:30:22,973 INFO L241 Difference]: Finished difference. Result has 33 places, 25 transitions, 110 flow [2021-03-11 20:30:22,973 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2021-03-11 20:30:22,973 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-11 20:30:22,973 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 110 flow [2021-03-11 20:30:22,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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 20:30:22,974 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:22,974 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:22,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:30:22,974 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1138250199, now seen corresponding path program 1 times [2021-03-11 20:30:22,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010491388] [2021-03-11 20:30:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:23,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,047 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:30:23,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:30:23,052 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 20:30:23,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010491388] [2021-03-11 20:30:23,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:23,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:30:23,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174110601] [2021-03-11 20:30:23,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:30:23,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:23,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:30:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:30:23,054 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:30:23,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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 20:30:23,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:23,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:30:23,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:23,095 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2021-03-11 20:30:23,095 INFO L130 PetriNetUnfolder]: For 134/170 co-relation queries the response was YES. [2021-03-11 20:30:23,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 76 events. 25/76 cut-off events. For 134/170 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 268 event pairs, 3 based on Foata normal form. 31/103 useless extension candidates. Maximal degree in co-relation 261. Up to 52 conditions per place. [2021-03-11 20:30:23,096 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2021-03-11 20:30:23,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 212 flow [2021-03-11 20:30:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:30:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:30:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 661 transitions. [2021-03-11 20:30:23,097 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7740046838407494 [2021-03-11 20:30:23,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 661 transitions. [2021-03-11 20:30:23,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 661 transitions. [2021-03-11 20:30:23,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:23,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 661 transitions. [2021-03-11 20:30:23,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.42857142857143) internal successors, (661), 7 states have internal predecessors, (661), 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 20:30:23,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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 20:30:23,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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 20:30:23,101 INFO L185 Difference]: Start difference. First operand has 33 places, 25 transitions, 110 flow. Second operand 7 states and 661 transitions. [2021-03-11 20:30:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 212 flow [2021-03-11 20:30:23,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:30:23,103 INFO L241 Difference]: Finished difference. Result has 41 places, 31 transitions, 194 flow [2021-03-11 20:30:23,103 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2021-03-11 20:30:23,103 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-03-11 20:30:23,103 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 194 flow [2021-03-11 20:30:23,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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 20:30:23,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:23,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:23,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:30:23,104 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1180321555, now seen corresponding path program 1 times [2021-03-11 20:30:23,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:23,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347654143] [2021-03-11 20:30:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:23,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,155 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:30:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:30:23,161 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 20:30:23,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347654143] [2021-03-11 20:30:23,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:23,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:30:23,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088166934] [2021-03-11 20:30:23,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:30:23,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:23,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:30:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:30:23,164 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:30:23,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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 20:30:23,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:23,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:30:23,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:23,226 INFO L129 PetriNetUnfolder]: 13/58 cut-off events. [2021-03-11 20:30:23,226 INFO L130 PetriNetUnfolder]: For 256/292 co-relation queries the response was YES. [2021-03-11 20:30:23,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 58 events. 13/58 cut-off events. For 256/292 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 196 event pairs, 0 based on Foata normal form. 29/84 useless extension candidates. Maximal degree in co-relation 255. Up to 41 conditions per place. [2021-03-11 20:30:23,228 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 2 selfloop transitions, 17 changer transitions 3/35 dead transitions. [2021-03-11 20:30:23,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 270 flow [2021-03-11 20:30:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:30:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:30:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 843 transitions. [2021-03-11 20:30:23,232 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76775956284153 [2021-03-11 20:30:23,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 843 transitions. [2021-03-11 20:30:23,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 843 transitions. [2021-03-11 20:30:23,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:23,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 843 transitions. [2021-03-11 20:30:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.66666666666667) internal successors, (843), 9 states have internal predecessors, (843), 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 20:30:23,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 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 20:30:23,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 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 20:30:23,237 INFO L185 Difference]: Start difference. First operand has 41 places, 31 transitions, 194 flow. Second operand 9 states and 843 transitions. [2021-03-11 20:30:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 270 flow [2021-03-11 20:30:23,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 240 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-11 20:30:23,241 INFO L241 Difference]: Finished difference. Result has 50 places, 32 transitions, 220 flow [2021-03-11 20:30:23,241 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2021-03-11 20:30:23,241 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2021-03-11 20:30:23,242 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 220 flow [2021-03-11 20:30:23,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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 20:30:23,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:23,242 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:23,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:30:23,242 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:23,243 INFO L82 PathProgramCache]: Analyzing trace with hash -81115698, now seen corresponding path program 1 times [2021-03-11 20:30:23,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:23,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325534144] [2021-03-11 20:30:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:23,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:30:23,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,305 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 20:30:23,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325534144] [2021-03-11 20:30:23,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:23,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:30:23,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164838163] [2021-03-11 20:30:23,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:30:23,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:30:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:30:23,307 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 122 [2021-03-11 20:30:23,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:30:23,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:23,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 122 [2021-03-11 20:30:23,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:23,320 INFO L129 PetriNetUnfolder]: 14/68 cut-off events. [2021-03-11 20:30:23,320 INFO L130 PetriNetUnfolder]: For 252/262 co-relation queries the response was YES. [2021-03-11 20:30:23,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 68 events. 14/68 cut-off events. For 252/262 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 278 event pairs, 0 based on Foata normal form. 5/69 useless extension candidates. Maximal degree in co-relation 265. Up to 28 conditions per place. [2021-03-11 20:30:23,321 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 2 selfloop transitions, 2 changer transitions 9/32 dead transitions. [2021-03-11 20:30:23,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 32 transitions, 232 flow [2021-03-11 20:30:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:30:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:30:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-03-11 20:30:23,322 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2021-03-11 20:30:23,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-03-11 20:30:23,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-03-11 20:30:23,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:23,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-03-11 20:30:23,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:30:23,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 20:30:23,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 20:30:23,323 INFO L185 Difference]: Start difference. First operand has 50 places, 32 transitions, 220 flow. Second operand 3 states and 306 transitions. [2021-03-11 20:30:23,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 32 transitions, 232 flow [2021-03-11 20:30:23,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 174 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 20:30:23,327 INFO L241 Difference]: Finished difference. Result has 44 places, 23 transitions, 114 flow [2021-03-11 20:30:23,327 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2021-03-11 20:30:23,327 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2021-03-11 20:30:23,327 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 114 flow [2021-03-11 20:30:23,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:30:23,327 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:23,327 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:23,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:30:23,328 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1869465094, now seen corresponding path program 2 times [2021-03-11 20:30:23,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:23,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25708781] [2021-03-11 20:30:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:23,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:30:23,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,381 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:30:23,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:30:23,387 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 20:30:23,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25708781] [2021-03-11 20:30:23,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:23,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:30:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476929557] [2021-03-11 20:30:23,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:30:23,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:30:23,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:30:23,389 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 122 [2021-03-11 20:30:23,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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 20:30:23,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:23,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 122 [2021-03-11 20:30:23,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:23,418 INFO L129 PetriNetUnfolder]: 17/59 cut-off events. [2021-03-11 20:30:23,418 INFO L130 PetriNetUnfolder]: For 96/97 co-relation queries the response was YES. [2021-03-11 20:30:23,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 59 events. 17/59 cut-off events. For 96/97 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 151 event pairs, 0 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 165. Up to 19 conditions per place. [2021-03-11 20:30:23,419 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 5 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2021-03-11 20:30:23,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 176 flow [2021-03-11 20:30:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:30:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:30:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2021-03-11 20:30:23,420 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-11 20:30:23,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2021-03-11 20:30:23,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2021-03-11 20:30:23,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:23,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2021-03-11 20:30:23,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 20:30:23,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:30:23,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:30:23,423 INFO L185 Difference]: Start difference. First operand has 44 places, 23 transitions, 114 flow. Second operand 5 states and 450 transitions. [2021-03-11 20:30:23,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 176 flow [2021-03-11 20:30:23,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 134 flow, removed 9 selfloop flow, removed 9 redundant places. [2021-03-11 20:30:23,424 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2021-03-11 20:30:23,424 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-11 20:30:23,425 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-11 20:30:23,425 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2021-03-11 20:30:23,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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 20:30:23,425 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:30:23,425 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:30:23,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:30:23,425 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:30:23,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:30:23,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1473049060, now seen corresponding path program 3 times [2021-03-11 20:30:23,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:30:23,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846536786] [2021-03-11 20:30:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:30:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:30:23,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:30:23,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:30:23,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:30:23,479 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 20:30:23,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846536786] [2021-03-11 20:30:23,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:30:23,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:30:23,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134928001] [2021-03-11 20:30:23,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:30:23,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:30:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:30:23,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:30:23,481 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 122 [2021-03-11 20:30:23,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 20:30:23,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:30:23,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 122 [2021-03-11 20:30:23,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:30:23,493 INFO L129 PetriNetUnfolder]: 14/56 cut-off events. [2021-03-11 20:30:23,493 INFO L130 PetriNetUnfolder]: For 46/47 co-relation queries the response was YES. [2021-03-11 20:30:23,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 56 events. 14/56 cut-off events. For 46/47 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 156 event pairs, 0 based on Foata normal form. 2/56 useless extension candidates. Maximal degree in co-relation 151. Up to 19 conditions per place. [2021-03-11 20:30:23,493 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-11 20:30:23,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 140 flow [2021-03-11 20:30:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:30:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:30:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2021-03-11 20:30:23,494 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8135245901639344 [2021-03-11 20:30:23,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2021-03-11 20:30:23,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2021-03-11 20:30:23,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:30:23,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2021-03-11 20:30:23,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 20:30:23,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 20:30:23,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 20:30:23,496 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 4 states and 397 transitions. [2021-03-11 20:30:23,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 140 flow [2021-03-11 20:30:23,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:30:23,498 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2021-03-11 20:30:23,498 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2021-03-11 20:30:23,498 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:30:23,498 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2021-03-11 20:30:23,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 20:30:23,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:30:23,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:30:23 BasicIcfg [2021-03-11 20:30:23,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:30:23,502 INFO L168 Benchmark]: Toolchain (without parser) took 3690.77 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 301.1 MB in the beginning and 210.2 MB in the end (delta: 90.9 MB). Peak memory consumption was 161.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:30:23,503 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 337.6 MB. Free memory was 319.3 MB in the beginning and 319.2 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:30:23,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.14 ms. Allocated memory is still 337.6 MB. Free memory was 300.5 MB in the beginning and 301.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:30:23,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.36 ms. Allocated memory is still 337.6 MB. Free memory was 301.7 MB in the beginning and 299.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:30:23,509 INFO L168 Benchmark]: Boogie Preprocessor took 14.73 ms. Allocated memory is still 337.6 MB. Free memory was 299.6 MB in the beginning and 298.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:30:23,509 INFO L168 Benchmark]: RCFGBuilder took 378.77 ms. Allocated memory is still 337.6 MB. Free memory was 298.5 MB in the beginning and 274.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:30:23,509 INFO L168 Benchmark]: TraceAbstraction took 2928.37 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 274.4 MB in the beginning and 210.2 MB in the end (delta: 64.2 MB). Peak memory consumption was 132.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:30:23,516 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 337.6 MB. Free memory was 319.3 MB in the beginning and 319.2 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 335.14 ms. Allocated memory is still 337.6 MB. Free memory was 300.5 MB in the beginning and 301.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.36 ms. Allocated memory is still 337.6 MB. Free memory was 301.7 MB in the beginning and 299.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.73 ms. Allocated memory is still 337.6 MB. Free memory was 299.6 MB in the beginning and 298.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 378.77 ms. Allocated memory is still 337.6 MB. Free memory was 298.5 MB in the beginning and 274.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2928.37 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 274.4 MB in the beginning and 210.2 MB in the end (delta: 64.2 MB). Peak memory consumption was 132.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1763.3ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1734 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 909, positive: 830, positive conditional: 0, positive unconditional: 830, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 602, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 602, positive: 555, positive conditional: 0, positive unconditional: 555, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 151, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 909, positive: 270, positive conditional: 0, positive unconditional: 270, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 602, unknown conditional: 0, unknown unconditional: 602] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2831.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 342.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1843.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 16 SDslu, 15 SDs, 0 SdLazy, 102 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 77.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=4, InterpolantAutomatonStates: 36, 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: 15.4ms SsaConstructionTime, 122.6ms SatisfiabilityAnalysisTime, 371.6ms InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 262 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...