/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:27:08,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:27:08,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:27:08,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:27:08,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:27:08,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:27:08,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:27:08,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:27:08,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:27:08,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:27:08,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:27:08,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:27:08,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:27:08,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:27:08,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:27:08,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:27:08,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:27:08,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:27:08,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:27:08,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:27:08,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:27:08,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:27:08,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:27:08,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:27:08,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:27:08,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:27:08,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:27:08,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:27:08,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:27:08,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:27:08,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:27:08,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:27:08,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:27:08,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:27:08,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:27:08,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:27:08,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:27:08,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:27:08,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:27:08,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:27:08,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:27:08,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:27:08,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:27:08,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:27:08,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:27:08,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:27:08,716 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:27:08,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:27:08,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:27:08,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:27:08,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:27:08,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:27:08,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:27:08,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:27:08,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:27:08,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:27:08,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:27:08,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:27:08,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:27:08,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:27:08,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:27:08,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:27:08,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:27:08,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:27:08,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:27:08,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:27:08,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:27:08,973 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:27:08,973 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:27:08,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-06-10 12:27:09,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1d541d0/b88b97ad975a4ca0876333c00da5e7e1/FLAGc5a17f1c1 [2021-06-10 12:27:09,470 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:27:09,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-06-10 12:27:09,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1d541d0/b88b97ad975a4ca0876333c00da5e7e1/FLAGc5a17f1c1 [2021-06-10 12:27:09,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1d541d0/b88b97ad975a4ca0876333c00da5e7e1 [2021-06-10 12:27:09,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:27:09,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:27:09,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:09,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:27:09,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:27:09,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7d6b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09, skipping insertion in model container [2021-06-10 12:27:09,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:27:09,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:27:09,679 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/safe018_pso.oepc.i[950,963] [2021-06-10 12:27:09,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:09,814 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:27:09,822 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/safe018_pso.oepc.i[950,963] [2021-06-10 12:27:09,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:09,907 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:27:09,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09 WrapperNode [2021-06-10 12:27:09,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:09,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:09,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:27:09,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:27:09,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:09,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:27:09,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:27:09,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:27:09,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... [2021-06-10 12:27:09,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:27:09,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:27:09,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:27:09,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:27:09,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:27:10,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:27:10,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:27:10,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:27:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:27:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:27:10,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:27:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:27:10,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:27:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:27:10,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:27:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:27:10,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:27:10,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:27:10,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:27:10,010 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:27:10,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:27:10,340 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:27:10,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:10 BoogieIcfgContainer [2021-06-10 12:27:10,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:27:10,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:27:10,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:27:10,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:27:10,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:27:09" (1/3) ... [2021-06-10 12:27:10,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35aea6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:10, skipping insertion in model container [2021-06-10 12:27:10,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:09" (2/3) ... [2021-06-10 12:27:10,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35aea6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:10, skipping insertion in model container [2021-06-10 12:27:10,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:10" (3/3) ... [2021-06-10 12:27:10,347 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2021-06-10 12:27:10,350 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:27:10,355 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:27:10,356 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:27:10,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,398 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,399 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:10,405 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:27:10,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:27:10,448 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:27:10,448 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:27:10,448 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:27:10,448 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:27:10,448 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:27:10,448 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:27:10,448 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:27:10,448 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:27:10,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:27:10,499 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-10 12:27:10,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:10,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 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. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 12:27:10,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:27:10,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-10 12:27:10,527 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-10 12:27:10,527 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:10,528 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:10,528 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:10,529 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1063022328, now seen corresponding path program 1 times [2021-06-10 12:27:10,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:10,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085993822] [2021-06-10 12:27:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:10,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:10,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:10,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:10,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:10,825 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:10,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:10,839 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:10,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:10,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:10,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:10,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:10,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:10,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:10,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:10,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085993822] [2021-06-10 12:27:10,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:10,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:10,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977751113] [2021-06-10 12:27:10,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:10,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:10,908 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2021-06-10 12:27:10,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 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) [2021-06-10 12:27:10,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:10,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2021-06-10 12:27:10,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:11,089 INFO L129 PetriNetUnfolder]: 46/172 cut-off events. [2021-06-10 12:27:11,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:11,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 172 events. 46/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 621 event pairs, 21 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 251. Up to 47 conditions per place. [2021-06-10 12:27:11,096 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 11 selfloop transitions, 2 changer transitions 19/78 dead transitions. [2021-06-10 12:27:11,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 229 flow [2021-06-10 12:27:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:27:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:27:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2021-06-10 12:27:11,110 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-06-10 12:27:11,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2021-06-10 12:27:11,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2021-06-10 12:27:11,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:11,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2021-06-10 12:27:11,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 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) [2021-06-10 12:27:11,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:11,125 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:11,127 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 9 states and 558 transitions. [2021-06-10 12:27:11,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 229 flow [2021-06-10 12:27:11,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:27:11,133 INFO L241 Difference]: Finished difference. Result has 80 places, 58 transitions, 142 flow [2021-06-10 12:27:11,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2021-06-10 12:27:11,135 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2021-06-10 12:27:11,136 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 142 flow [2021-06-10 12:27:11,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 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) [2021-06-10 12:27:11,136 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:11,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:11,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:27:11,137 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1010419335, now seen corresponding path program 1 times [2021-06-10 12:27:11,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:11,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603865749] [2021-06-10 12:27:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:11,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:11,192 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:11,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:11,205 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:11,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:11,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:11,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603865749] [2021-06-10 12:27:11,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:11,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:11,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016780736] [2021-06-10 12:27:11,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:11,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:11,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:11,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:11,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:11,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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) [2021-06-10 12:27:11,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:11,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:11,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:11,547 INFO L129 PetriNetUnfolder]: 65/243 cut-off events. [2021-06-10 12:27:11,547 INFO L130 PetriNetUnfolder]: For 83/97 co-relation queries the response was YES. [2021-06-10 12:27:11,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 243 events. 65/243 cut-off events. For 83/97 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1020 event pairs, 5 based on Foata normal form. 8/245 useless extension candidates. Maximal degree in co-relation 435. Up to 35 conditions per place. [2021-06-10 12:27:11,553 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 16 selfloop transitions, 10 changer transitions 38/108 dead transitions. [2021-06-10 12:27:11,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 426 flow [2021-06-10 12:27:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:27:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:27:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1020 transitions. [2021-06-10 12:27:11,558 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2021-06-10 12:27:11,558 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1020 transitions. [2021-06-10 12:27:11,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1020 transitions. [2021-06-10 12:27:11,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:11,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1020 transitions. [2021-06-10 12:27:11,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 60.0) internal successors, (1020), 17 states have internal predecessors, (1020), 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) [2021-06-10 12:27:11,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2021-06-10 12:27:11,567 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2021-06-10 12:27:11,567 INFO L185 Difference]: Start difference. First operand has 80 places, 58 transitions, 142 flow. Second operand 17 states and 1020 transitions. [2021-06-10 12:27:11,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 426 flow [2021-06-10 12:27:11,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 362 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-06-10 12:27:11,574 INFO L241 Difference]: Finished difference. Result has 97 places, 63 transitions, 226 flow [2021-06-10 12:27:11,574 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=63} [2021-06-10 12:27:11,575 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2021-06-10 12:27:11,575 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 63 transitions, 226 flow [2021-06-10 12:27:11,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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) [2021-06-10 12:27:11,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:11,576 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:11,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:27:11,576 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:11,577 INFO L82 PathProgramCache]: Analyzing trace with hash 326282953, now seen corresponding path program 1 times [2021-06-10 12:27:11,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:11,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609980059] [2021-06-10 12:27:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:11,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:11,665 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:11,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:11,675 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:11,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:11,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:11,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609980059] [2021-06-10 12:27:11,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:11,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:11,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968993743] [2021-06-10 12:27:11,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:11,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:11,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:11,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:11,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2021-06-10 12:27:11,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 63 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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) [2021-06-10 12:27:11,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:11,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2021-06-10 12:27:11,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:11,792 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2021-06-10 12:27:11,793 INFO L130 PetriNetUnfolder]: For 305/341 co-relation queries the response was YES. [2021-06-10 12:27:11,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 103 events. 12/103 cut-off events. For 305/341 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 275. Up to 25 conditions per place. [2021-06-10 12:27:11,793 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 13 selfloop transitions, 5 changer transitions 10/75 dead transitions. [2021-06-10 12:27:11,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 375 flow [2021-06-10 12:27:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 606 transitions. [2021-06-10 12:27:11,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8189189189189189 [2021-06-10 12:27:11,797 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 606 transitions. [2021-06-10 12:27:11,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 606 transitions. [2021-06-10 12:27:11,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:11,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 606 transitions. [2021-06-10 12:27:11,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.6) internal successors, (606), 10 states have internal predecessors, (606), 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) [2021-06-10 12:27:11,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:11,800 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:11,800 INFO L185 Difference]: Start difference. First operand has 97 places, 63 transitions, 226 flow. Second operand 10 states and 606 transitions. [2021-06-10 12:27:11,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 375 flow [2021-06-10 12:27:11,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 314 flow, removed 28 selfloop flow, removed 10 redundant places. [2021-06-10 12:27:11,803 INFO L241 Difference]: Finished difference. Result has 91 places, 63 transitions, 222 flow [2021-06-10 12:27:11,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2021-06-10 12:27:11,803 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2021-06-10 12:27:11,804 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 222 flow [2021-06-10 12:27:11,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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) [2021-06-10 12:27:11,804 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:11,804 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:11,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:27:11,804 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:11,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1242017434, now seen corresponding path program 1 times [2021-06-10 12:27:11,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:11,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467907448] [2021-06-10 12:27:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:11,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:11,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:11,864 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:11,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:11,871 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:11,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:11,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:11,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467907448] [2021-06-10 12:27:11,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:11,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:11,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101811365] [2021-06-10 12:27:11,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:11,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:11,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:11,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:11,903 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:11,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:11,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:11,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:11,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,011 INFO L129 PetriNetUnfolder]: 25/128 cut-off events. [2021-06-10 12:27:12,011 INFO L130 PetriNetUnfolder]: For 340/450 co-relation queries the response was YES. [2021-06-10 12:27:12,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 128 events. 25/128 cut-off events. For 340/450 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 5 based on Foata normal form. 4/127 useless extension candidates. Maximal degree in co-relation 375. Up to 29 conditions per place. [2021-06-10 12:27:12,012 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 10 selfloop transitions, 4 changer transitions 26/83 dead transitions. [2021-06-10 12:27:12,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 83 transitions, 469 flow [2021-06-10 12:27:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 596 transitions. [2021-06-10 12:27:12,014 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8054054054054054 [2021-06-10 12:27:12,014 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 596 transitions. [2021-06-10 12:27:12,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 596 transitions. [2021-06-10 12:27:12,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 596 transitions. [2021-06-10 12:27:12,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.6) internal successors, (596), 10 states have internal predecessors, (596), 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) [2021-06-10 12:27:12,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,016 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,017 INFO L185 Difference]: Start difference. First operand has 91 places, 63 transitions, 222 flow. Second operand 10 states and 596 transitions. [2021-06-10 12:27:12,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 83 transitions, 469 flow [2021-06-10 12:27:12,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 427 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-06-10 12:27:12,020 INFO L241 Difference]: Finished difference. Result has 93 places, 57 transitions, 196 flow [2021-06-10 12:27:12,020 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=93, PETRI_TRANSITIONS=57} [2021-06-10 12:27:12,020 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2021-06-10 12:27:12,020 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 57 transitions, 196 flow [2021-06-10 12:27:12,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:12,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,021 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:27:12,021 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2142793635, now seen corresponding path program 1 times [2021-06-10 12:27:12,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842896886] [2021-06-10 12:27:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,080 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:12,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:12,091 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:12,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:12,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842896886] [2021-06-10 12:27:12,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:12,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984764028] [2021-06-10 12:27:12,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:12,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:12,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:12,126 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:12,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 57 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:12,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:12,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,244 INFO L129 PetriNetUnfolder]: 23/127 cut-off events. [2021-06-10 12:27:12,244 INFO L130 PetriNetUnfolder]: For 358/380 co-relation queries the response was YES. [2021-06-10 12:27:12,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 127 events. 23/127 cut-off events. For 358/380 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 367 event pairs, 5 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 368. Up to 25 conditions per place. [2021-06-10 12:27:12,245 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 8 selfloop transitions, 6 changer transitions 22/79 dead transitions. [2021-06-10 12:27:12,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 457 flow [2021-06-10 12:27:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 654 transitions. [2021-06-10 12:27:12,247 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034398034398035 [2021-06-10 12:27:12,247 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 654 transitions. [2021-06-10 12:27:12,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 654 transitions. [2021-06-10 12:27:12,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 654 transitions. [2021-06-10 12:27:12,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.45454545454545) internal successors, (654), 11 states have internal predecessors, (654), 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) [2021-06-10 12:27:12,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:12,250 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:12,250 INFO L185 Difference]: Start difference. First operand has 93 places, 57 transitions, 196 flow. Second operand 11 states and 654 transitions. [2021-06-10 12:27:12,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 457 flow [2021-06-10 12:27:12,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 375 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-06-10 12:27:12,253 INFO L241 Difference]: Finished difference. Result has 89 places, 57 transitions, 188 flow [2021-06-10 12:27:12,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2021-06-10 12:27:12,253 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-06-10 12:27:12,253 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 188 flow [2021-06-10 12:27:12,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:12,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:27:12,254 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 306398858, now seen corresponding path program 1 times [2021-06-10 12:27:12,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811882342] [2021-06-10 12:27:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,290 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:12,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:12,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:12,318 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:12,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811882342] [2021-06-10 12:27:12,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:27:12,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313795406] [2021-06-10 12:27:12,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:27:12,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:27:12,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:27:12,333 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:27:12,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 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) [2021-06-10 12:27:12,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:27:12,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,431 INFO L129 PetriNetUnfolder]: 106/341 cut-off events. [2021-06-10 12:27:12,431 INFO L130 PetriNetUnfolder]: For 320/326 co-relation queries the response was YES. [2021-06-10 12:27:12,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 341 events. 106/341 cut-off events. For 320/326 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1783 event pairs, 39 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 705. Up to 84 conditions per place. [2021-06-10 12:27:12,433 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 6 changer transitions 19/82 dead transitions. [2021-06-10 12:27:12,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 308 flow [2021-06-10 12:27:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:27:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:27:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 577 transitions. [2021-06-10 12:27:12,435 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8663663663663663 [2021-06-10 12:27:12,435 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 577 transitions. [2021-06-10 12:27:12,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 577 transitions. [2021-06-10 12:27:12,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 577 transitions. [2021-06-10 12:27:12,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.11111111111111) internal successors, (577), 9 states have internal predecessors, (577), 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) [2021-06-10 12:27:12,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:12,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:12,438 INFO L185 Difference]: Start difference. First operand has 89 places, 57 transitions, 188 flow. Second operand 9 states and 577 transitions. [2021-06-10 12:27:12,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 308 flow [2021-06-10 12:27:12,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 278 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-06-10 12:27:12,440 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 214 flow [2021-06-10 12:27:12,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2021-06-10 12:27:12,441 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2021-06-10 12:27:12,441 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 214 flow [2021-06-10 12:27:12,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 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) [2021-06-10 12:27:12,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:27:12,441 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,442 INFO L82 PathProgramCache]: Analyzing trace with hash 246595460, now seen corresponding path program 1 times [2021-06-10 12:27:12,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072555343] [2021-06-10 12:27:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,502 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:12,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:12,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:12,521 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:12,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072555343] [2021-06-10 12:27:12,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:12,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380989568] [2021-06-10 12:27:12,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:12,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:12,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:27:12,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 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) [2021-06-10 12:27:12,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:27:12,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,667 INFO L129 PetriNetUnfolder]: 57/221 cut-off events. [2021-06-10 12:27:12,668 INFO L130 PetriNetUnfolder]: For 327/377 co-relation queries the response was YES. [2021-06-10 12:27:12,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 221 events. 57/221 cut-off events. For 327/377 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 900 event pairs, 4 based on Foata normal form. 14/230 useless extension candidates. Maximal degree in co-relation 627. Up to 76 conditions per place. [2021-06-10 12:27:12,669 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 9 changer transitions 19/85 dead transitions. [2021-06-10 12:27:12,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 467 flow [2021-06-10 12:27:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 640 transitions. [2021-06-10 12:27:12,671 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2021-06-10 12:27:12,671 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 640 transitions. [2021-06-10 12:27:12,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 640 transitions. [2021-06-10 12:27:12,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 640 transitions. [2021-06-10 12:27:12,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2021-06-10 12:27:12,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,674 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,674 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 214 flow. Second operand 10 states and 640 transitions. [2021-06-10 12:27:12,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 467 flow [2021-06-10 12:27:12,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 443 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 12:27:12,676 INFO L241 Difference]: Finished difference. Result has 92 places, 63 transitions, 282 flow [2021-06-10 12:27:12,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=92, PETRI_TRANSITIONS=63} [2021-06-10 12:27:12,677 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 24 predicate places. [2021-06-10 12:27:12,677 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 63 transitions, 282 flow [2021-06-10 12:27:12,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 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) [2021-06-10 12:27:12,677 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,677 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:27:12,677 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2039546738, now seen corresponding path program 1 times [2021-06-10 12:27:12,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723018458] [2021-06-10 12:27:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,748 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:12,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:12,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:12,770 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:12,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723018458] [2021-06-10 12:27:12,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:12,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089782664] [2021-06-10 12:27:12,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:12,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:12,780 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:27:12,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 63 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 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) [2021-06-10 12:27:12,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:27:12,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,906 INFO L129 PetriNetUnfolder]: 16/103 cut-off events. [2021-06-10 12:27:12,906 INFO L130 PetriNetUnfolder]: For 409/458 co-relation queries the response was YES. [2021-06-10 12:27:12,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 103 events. 16/103 cut-off events. For 409/458 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 0 based on Foata normal form. 14/116 useless extension candidates. Maximal degree in co-relation 330. Up to 30 conditions per place. [2021-06-10 12:27:12,907 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 4 selfloop transitions, 12 changer transitions 13/76 dead transitions. [2021-06-10 12:27:12,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 76 transitions, 466 flow [2021-06-10 12:27:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 691 transitions. [2021-06-10 12:27:12,909 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8488943488943489 [2021-06-10 12:27:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 691 transitions. [2021-06-10 12:27:12,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 691 transitions. [2021-06-10 12:27:12,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 691 transitions. [2021-06-10 12:27:12,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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) [2021-06-10 12:27:12,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:12,912 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:12,912 INFO L185 Difference]: Start difference. First operand has 92 places, 63 transitions, 282 flow. Second operand 11 states and 691 transitions. [2021-06-10 12:27:12,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 76 transitions, 466 flow [2021-06-10 12:27:12,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 341 flow, removed 49 selfloop flow, removed 15 redundant places. [2021-06-10 12:27:12,914 INFO L241 Difference]: Finished difference. Result has 89 places, 63 transitions, 242 flow [2021-06-10 12:27:12,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=242, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2021-06-10 12:27:12,915 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-06-10 12:27:12,915 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 242 flow [2021-06-10 12:27:12,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 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) [2021-06-10 12:27:12,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,915 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:27:12,915 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1493209069, now seen corresponding path program 1 times [2021-06-10 12:27:12,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305445166] [2021-06-10 12:27:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,963 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:12,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:12,968 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:12,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:12,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305445166] [2021-06-10 12:27:12,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:12,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136443004] [2021-06-10 12:27:12,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:12,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:12,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:12,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:12,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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) [2021-06-10 12:27:12,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:12,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:13,060 INFO L129 PetriNetUnfolder]: 5/72 cut-off events. [2021-06-10 12:27:13,060 INFO L130 PetriNetUnfolder]: For 76/82 co-relation queries the response was YES. [2021-06-10 12:27:13,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 72 events. 5/72 cut-off events. For 76/82 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 143. Up to 11 conditions per place. [2021-06-10 12:27:13,061 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-06-10 12:27:13,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 61 transitions, 264 flow [2021-06-10 12:27:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:27:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:27:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 462 transitions. [2021-06-10 12:27:13,062 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7804054054054054 [2021-06-10 12:27:13,062 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 462 transitions. [2021-06-10 12:27:13,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 462 transitions. [2021-06-10 12:27:13,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:13,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 462 transitions. [2021-06-10 12:27:13,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 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) [2021-06-10 12:27:13,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 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) [2021-06-10 12:27:13,064 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 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) [2021-06-10 12:27:13,064 INFO L185 Difference]: Start difference. First operand has 89 places, 63 transitions, 242 flow. Second operand 8 states and 462 transitions. [2021-06-10 12:27:13,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 61 transitions, 264 flow [2021-06-10 12:27:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 61 transitions, 182 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-10 12:27:13,065 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2021-06-10 12:27:13,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2021-06-10 12:27:13,065 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2021-06-10 12:27:13,065 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2021-06-10 12:27:13,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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) [2021-06-10 12:27:13,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:27:13,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:27:13 BasicIcfg [2021-06-10 12:27:13,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:27:13,069 INFO L168 Benchmark]: Toolchain (without parser) took 3567.62 ms. Allocated memory was 377.5 MB in the beginning and 463.5 MB in the end (delta: 86.0 MB). Free memory was 340.0 MB in the beginning and 328.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 97.9 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,069 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 377.5 MB. Free memory is still 358.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:13,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.65 ms. Allocated memory is still 377.5 MB. Free memory was 339.8 MB in the beginning and 339.4 MB in the end (delta: 331.7 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 377.5 MB. Free memory was 339.4 MB in the beginning and 337.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,070 INFO L168 Benchmark]: Boogie Preprocessor took 16.81 ms. Allocated memory is still 377.5 MB. Free memory was 337.3 MB in the beginning and 336.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,070 INFO L168 Benchmark]: RCFGBuilder took 386.00 ms. Allocated memory is still 377.5 MB. Free memory was 336.3 MB in the beginning and 311.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,070 INFO L168 Benchmark]: TraceAbstraction took 2725.94 ms. Allocated memory was 377.5 MB in the beginning and 463.5 MB in the end (delta: 86.0 MB). Free memory was 311.1 MB in the beginning and 328.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 377.5 MB. Free memory is still 358.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 403.65 ms. Allocated memory is still 377.5 MB. Free memory was 339.8 MB in the beginning and 339.4 MB in the end (delta: 331.7 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 377.5 MB. Free memory was 339.4 MB in the beginning and 337.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.81 ms. Allocated memory is still 377.5 MB. Free memory was 337.3 MB in the beginning and 336.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 386.00 ms. Allocated memory is still 377.5 MB. Free memory was 336.3 MB in the beginning and 311.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2725.94 ms. Allocated memory was 377.5 MB in the beginning and 463.5 MB in the end (delta: 86.0 MB). Free memory was 311.1 MB in the beginning and 328.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2622.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1377.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 60.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 110 SDtfs, 245 SDslu, 366 SDs, 0 SdLazy, 384 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 246.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 923.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=7, InterpolantAutomatonStates: 95, 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: 35.4ms SsaConstructionTime, 173.4ms SatisfiabilityAnalysisTime, 805.3ms InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 1662 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...