/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:28:00,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:28:00,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:28:00,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:28:00,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:28:00,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:28:00,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:28:00,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:28:00,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:28:00,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:28:00,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:28:00,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:28:00,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:28:00,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:28:00,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:28:00,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:28:00,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:28:00,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:28:00,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:28:00,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:28:00,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:28:00,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:28:00,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:28:00,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:28:00,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:28:00,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:28:00,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:28:00,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:28:00,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:28:00,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:28:00,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:28:00,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:28:00,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:28:00,613 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:28:00,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:28:00,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:28:00,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:28:00,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:28:00,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:28:00,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:28:00,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:28:00,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:28:00,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:28:00,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:28:00,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:28:00,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:28:00,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:28:00,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:28:00,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:28:00,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:28:00,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:28:00,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:28:00,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:28:00,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:28:00,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:28:00,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:28:00,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:28:00,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:28:00,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:28:00,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:28:00,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:28:00,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:28:00,956 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:28:00,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2021-03-11 20:28:01,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a88fa2c/4654733c63544f80aba3cff98c7e0f16/FLAGe84253a01 [2021-03-11 20:28:01,599 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:28:01,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2021-03-11 20:28:01,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a88fa2c/4654733c63544f80aba3cff98c7e0f16/FLAGe84253a01 [2021-03-11 20:28:01,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a88fa2c/4654733c63544f80aba3cff98c7e0f16 [2021-03-11 20:28:01,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:28:01,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:28:01,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:28:01,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:28:01,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:28:01,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:28:01" (1/1) ... [2021-03-11 20:28:01,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618e988e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:01, skipping insertion in model container [2021-03-11 20:28:01,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:28:01" (1/1) ... [2021-03-11 20:28:01,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:28:01,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:28:02,111 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/safe027_pso.opt.i[949,962] [2021-03-11 20:28:02,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:28:02,303 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:28:02,313 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/safe027_pso.opt.i[949,962] [2021-03-11 20:28:02,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:28:02,429 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:28:02,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02 WrapperNode [2021-03-11 20:28:02,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:28:02,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:28:02,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:28:02,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:28:02,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:28:02,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:28:02,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:28:02,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:28:02,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... [2021-03-11 20:28:02,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:28:02,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:28:02,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:28:02,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:28:02,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:28:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:28:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:28:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:28:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:28:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:28:02,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:28:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:28:02,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:28:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:28:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:28:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:28:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:28:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:28:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:28:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:28:02,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:28:02,610 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:28:02,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:28:02,940 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:28:02,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:28:02 BoogieIcfgContainer [2021-03-11 20:28:02,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:28:02,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:28:02,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:28:02,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:28:02,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:28:01" (1/3) ... [2021-03-11 20:28:02,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d792d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:28:02, skipping insertion in model container [2021-03-11 20:28:02,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:28:02" (2/3) ... [2021-03-11 20:28:02,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d792d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:28:02, skipping insertion in model container [2021-03-11 20:28:02,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:28:02" (3/3) ... [2021-03-11 20:28:02,948 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2021-03-11 20:28:02,952 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:28:02,955 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:28:02,956 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:28:03,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,011 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,011 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,014 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,016 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,016 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,016 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,017 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,018 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,018 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,019 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,024 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,024 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,024 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,025 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,029 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,030 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,030 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:28:03,031 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:28:03,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 20:28:03,062 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:28:03,062 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:28:03,062 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:28:03,062 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:28:03,062 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:28:03,062 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:28:03,062 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:28:03,062 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:28:03,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-03-11 20:28:03,110 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-11 20:28:03,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:03,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 20:28:03,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 87 transitions, 194 flow [2021-03-11 20:28:03,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2021-03-11 20:28:03,120 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:28:03,128 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 69 transitions, 150 flow [2021-03-11 20:28:03,130 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 69 transitions, 150 flow [2021-03-11 20:28:03,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 150 flow [2021-03-11 20:28:03,146 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-03-11 20:28:03,146 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:03,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-11 20:28:03,148 INFO L116 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-11 20:28:05,716 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-11 20:28:05,947 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-11 20:28:06,031 INFO L131 LiptonReduction]: Checked pairs total: 2387 [2021-03-11 20:28:06,032 INFO L133 LiptonReduction]: Total number of compositions: 54 [2021-03-11 20:28:06,033 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2915 [2021-03-11 20:28:06,041 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:28:06,041 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:06,041 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,042 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,042 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 551014403, now seen corresponding path program 1 times [2021-03-11 20:28:06,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123016858] [2021-03-11 20:28:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123016858] [2021-03-11 20:28:06,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:28:06,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927750481] [2021-03-11 20:28:06,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:28:06,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:28:06,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:28:06,220 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 141 [2021-03-11 20:28:06,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 141 [2021-03-11 20:28:06,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,238 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-11 20:28:06,238 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:06,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:28:06,239 INFO L132 encePairwiseOnDemand]: 140/141 looper letters, 0 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2021-03-11 20:28:06,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 52 flow [2021-03-11 20:28:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:28:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:28:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2021-03-11 20:28:06,252 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9468085106382979 [2021-03-11 20:28:06,253 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2021-03-11 20:28:06,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2021-03-11 20:28:06,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2021-03-11 20:28:06,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,264 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,265 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 2 states and 267 transitions. [2021-03-11 20:28:06,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 52 flow [2021-03-11 20:28:06,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 48 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:28:06,269 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 48 flow [2021-03-11 20:28:06,270 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-11 20:28:06,271 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2021-03-11 20:28:06,271 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 48 flow [2021-03-11 20:28:06,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,272 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:28:06,272 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,272 INFO L82 PathProgramCache]: Analyzing trace with hash -98422534, now seen corresponding path program 1 times [2021-03-11 20:28:06,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760650569] [2021-03-11 20:28:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,394 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:28:06,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:28:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760650569] [2021-03-11 20:28:06,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:28:06,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042193007] [2021-03-11 20:28:06,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:28:06,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:28:06,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:28:06,411 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2021-03-11 20:28:06,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2021-03-11 20:28:06,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,432 INFO L129 PetriNetUnfolder]: 14/52 cut-off events. [2021-03-11 20:28:06,433 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:06,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 52 events. 14/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 143 event pairs, 10 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 91. Up to 31 conditions per place. [2021-03-11 20:28:06,434 INFO L132 encePairwiseOnDemand]: 137/141 looper letters, 5 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-11 20:28:06,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 68 flow [2021-03-11 20:28:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:28:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:28:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2021-03-11 20:28:06,436 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8297872340425532 [2021-03-11 20:28:06,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2021-03-11 20:28:06,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2021-03-11 20:28:06,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2021-03-11 20:28:06,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,440 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 48 flow. Second operand 3 states and 351 transitions. [2021-03-11 20:28:06,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 68 flow [2021-03-11 20:28:06,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:28:06,442 INFO L241 Difference]: Finished difference. Result has 33 places, 22 transitions, 67 flow [2021-03-11 20:28:06,442 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2021-03-11 20:28:06,442 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2021-03-11 20:28:06,442 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 67 flow [2021-03-11 20:28:06,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,443 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,443 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:28:06,443 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash -432361738, now seen corresponding path program 1 times [2021-03-11 20:28:06,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651139463] [2021-03-11 20:28:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651139463] [2021-03-11 20:28:06,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:28:06,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760496761] [2021-03-11 20:28:06,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:06,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:06,502 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2021-03-11 20:28:06,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2021-03-11 20:28:06,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,560 INFO L129 PetriNetUnfolder]: 8/48 cut-off events. [2021-03-11 20:28:06,560 INFO L130 PetriNetUnfolder]: For 16/25 co-relation queries the response was YES. [2021-03-11 20:28:06,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 48 events. 8/48 cut-off events. For 16/25 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 event pairs, 0 based on Foata normal form. 5/51 useless extension candidates. Maximal degree in co-relation 93. Up to 14 conditions per place. [2021-03-11 20:28:06,562 INFO L132 encePairwiseOnDemand]: 137/141 looper letters, 4 selfloop transitions, 4 changer transitions 2/26 dead transitions. [2021-03-11 20:28:06,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 100 flow [2021-03-11 20:28:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2021-03-11 20:28:06,568 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-03-11 20:28:06,568 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2021-03-11 20:28:06,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2021-03-11 20:28:06,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2021-03-11 20:28:06,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,572 INFO L185 Difference]: Start difference. First operand has 33 places, 22 transitions, 67 flow. Second operand 4 states and 470 transitions. [2021-03-11 20:28:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 100 flow [2021-03-11 20:28:06,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:28:06,573 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 81 flow [2021-03-11 20:28:06,573 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-11 20:28:06,573 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2021-03-11 20:28:06,574 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 81 flow [2021-03-11 20:28:06,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,574 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,574 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:28:06,574 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash -94784301, now seen corresponding path program 1 times [2021-03-11 20:28:06,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126964957] [2021-03-11 20:28:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126964957] [2021-03-11 20:28:06,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:28:06,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938165697] [2021-03-11 20:28:06,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:28:06,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:28:06,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:28:06,639 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 141 [2021-03-11 20:28:06,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 141 [2021-03-11 20:28:06,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,653 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-03-11 20:28:06,653 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-11 20:28:06,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 24 events. 1/24 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2021-03-11 20:28:06,654 INFO L132 encePairwiseOnDemand]: 138/141 looper letters, 1 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-11 20:28:06,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 22 transitions, 89 flow [2021-03-11 20:28:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:28:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:28:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2021-03-11 20:28:06,655 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8747044917257684 [2021-03-11 20:28:06,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2021-03-11 20:28:06,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2021-03-11 20:28:06,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2021-03-11 20:28:06,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,659 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 81 flow. Second operand 3 states and 370 transitions. [2021-03-11 20:28:06,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 22 transitions, 89 flow [2021-03-11 20:28:06,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 81 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:28:06,661 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 84 flow [2021-03-11 20:28:06,661 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-11 20:28:06,661 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2021-03-11 20:28:06,661 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 84 flow [2021-03-11 20:28:06,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,662 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,662 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:28:06,662 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1356666367, now seen corresponding path program 1 times [2021-03-11 20:28:06,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755608848] [2021-03-11 20:28:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755608848] [2021-03-11 20:28:06,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:28:06,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131614592] [2021-03-11 20:28:06,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:06,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:06,730 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2021-03-11 20:28:06,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2021-03-11 20:28:06,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,748 INFO L129 PetriNetUnfolder]: 7/44 cut-off events. [2021-03-11 20:28:06,748 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2021-03-11 20:28:06,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 44 events. 7/44 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 1 based on Foata normal form. 4/47 useless extension candidates. Maximal degree in co-relation 106. Up to 12 conditions per place. [2021-03-11 20:28:06,749 INFO L132 encePairwiseOnDemand]: 137/141 looper letters, 4 selfloop transitions, 4 changer transitions 2/26 dead transitions. [2021-03-11 20:28:06,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 122 flow [2021-03-11 20:28:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2021-03-11 20:28:06,750 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-03-11 20:28:06,750 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2021-03-11 20:28:06,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2021-03-11 20:28:06,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2021-03-11 20:28:06,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,754 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,754 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 84 flow. Second operand 4 states and 470 transitions. [2021-03-11 20:28:06,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 122 flow [2021-03-11 20:28:06,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:28:06,755 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 95 flow [2021-03-11 20:28:06,755 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2021-03-11 20:28:06,756 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2021-03-11 20:28:06,756 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 95 flow [2021-03-11 20:28:06,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,756 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,756 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:28:06,757 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1302767389, now seen corresponding path program 1 times [2021-03-11 20:28:06,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897761012] [2021-03-11 20:28:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897761012] [2021-03-11 20:28:06,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:28:06,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431259447] [2021-03-11 20:28:06,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:28:06,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:28:06,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:28:06,793 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 141 [2021-03-11 20:28:06,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 141 [2021-03-11 20:28:06,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,821 INFO L129 PetriNetUnfolder]: 57/117 cut-off events. [2021-03-11 20:28:06,822 INFO L130 PetriNetUnfolder]: For 93/105 co-relation queries the response was YES. [2021-03-11 20:28:06,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 117 events. 57/117 cut-off events. For 93/105 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 446 event pairs, 28 based on Foata normal form. 3/108 useless extension candidates. Maximal degree in co-relation 273. Up to 95 conditions per place. [2021-03-11 20:28:06,823 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 5 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-11 20:28:06,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 123 flow [2021-03-11 20:28:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:28:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:28:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2021-03-11 20:28:06,830 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8132387706855791 [2021-03-11 20:28:06,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2021-03-11 20:28:06,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2021-03-11 20:28:06,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2021-03-11 20:28:06,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,833 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 95 flow. Second operand 3 states and 344 transitions. [2021-03-11 20:28:06,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 123 flow [2021-03-11 20:28:06,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 109 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-11 20:28:06,835 INFO L241 Difference]: Finished difference. Result has 39 places, 26 transitions, 114 flow [2021-03-11 20:28:06,835 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2021-03-11 20:28:06,835 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2021-03-11 20:28:06,835 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 114 flow [2021-03-11 20:28:06,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:28:06,836 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1731094429, now seen corresponding path program 1 times [2021-03-11 20:28:06,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061223293] [2021-03-11 20:28:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061223293] [2021-03-11 20:28:06,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:28:06,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780869853] [2021-03-11 20:28:06,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:06,906 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 141 [2021-03-11 20:28:06,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 141 [2021-03-11 20:28:06,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:06,935 INFO L129 PetriNetUnfolder]: 41/101 cut-off events. [2021-03-11 20:28:06,936 INFO L130 PetriNetUnfolder]: For 98/160 co-relation queries the response was YES. [2021-03-11 20:28:06,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 101 events. 41/101 cut-off events. For 98/160 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 333 event pairs, 8 based on Foata normal form. 15/111 useless extension candidates. Maximal degree in co-relation 317. Up to 74 conditions per place. [2021-03-11 20:28:06,937 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 5 selfloop transitions, 9 changer transitions 0/30 dead transitions. [2021-03-11 20:28:06,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 158 flow [2021-03-11 20:28:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2021-03-11 20:28:06,939 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8138297872340425 [2021-03-11 20:28:06,939 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2021-03-11 20:28:06,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2021-03-11 20:28:06,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:06,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2021-03-11 20:28:06,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,942 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 114 flow. Second operand 4 states and 459 transitions. [2021-03-11 20:28:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 158 flow [2021-03-11 20:28:06,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:28:06,945 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 161 flow [2021-03-11 20:28:06,945 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2021-03-11 20:28:06,945 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2021-03-11 20:28:06,945 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 161 flow [2021-03-11 20:28:06,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:06,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:06,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:28:06,946 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1020166890, now seen corresponding path program 1 times [2021-03-11 20:28:06,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:06,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420254006] [2021-03-11 20:28:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:06,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:06,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:06,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420254006] [2021-03-11 20:28:06,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:06,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:28:06,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806900980] [2021-03-11 20:28:06,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:28:06,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:06,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:28:06,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:28:06,984 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 141 [2021-03-11 20:28:06,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:06,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:06,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 141 [2021-03-11 20:28:06,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:07,014 INFO L129 PetriNetUnfolder]: 26/72 cut-off events. [2021-03-11 20:28:07,014 INFO L130 PetriNetUnfolder]: For 99/194 co-relation queries the response was YES. [2021-03-11 20:28:07,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 72 events. 26/72 cut-off events. For 99/194 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 190 event pairs, 1 based on Foata normal form. 28/96 useless extension candidates. Maximal degree in co-relation 280. Up to 51 conditions per place. [2021-03-11 20:28:07,015 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 5 selfloop transitions, 13 changer transitions 0/34 dead transitions. [2021-03-11 20:28:07,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 34 transitions, 221 flow [2021-03-11 20:28:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:28:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:28:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2021-03-11 20:28:07,018 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8141843971631205 [2021-03-11 20:28:07,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2021-03-11 20:28:07,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2021-03-11 20:28:07,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:07,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2021-03-11 20:28:07,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,021 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 161 flow. Second operand 5 states and 574 transitions. [2021-03-11 20:28:07,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 34 transitions, 221 flow [2021-03-11 20:28:07,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 199 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-11 20:28:07,023 INFO L241 Difference]: Finished difference. Result has 44 places, 34 transitions, 207 flow [2021-03-11 20:28:07,023 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2021-03-11 20:28:07,024 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2021-03-11 20:28:07,024 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 207 flow [2021-03-11 20:28:07,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,024 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:07,024 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:07,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:28:07,024 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:07,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1347644973, now seen corresponding path program 1 times [2021-03-11 20:28:07,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:07,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712973832] [2021-03-11 20:28:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:07,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:07,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:07,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712973832] [2021-03-11 20:28:07,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:07,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:28:07,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883669272] [2021-03-11 20:28:07,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:07,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:07,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:07,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:07,076 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2021-03-11 20:28:07,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:07,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2021-03-11 20:28:07,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:07,105 INFO L129 PetriNetUnfolder]: 52/129 cut-off events. [2021-03-11 20:28:07,105 INFO L130 PetriNetUnfolder]: For 205/291 co-relation queries the response was YES. [2021-03-11 20:28:07,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 129 events. 52/129 cut-off events. For 205/291 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 470 event pairs, 2 based on Foata normal form. 13/133 useless extension candidates. Maximal degree in co-relation 483. Up to 92 conditions per place. [2021-03-11 20:28:07,106 INFO L132 encePairwiseOnDemand]: 138/141 looper letters, 6 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2021-03-11 20:28:07,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 36 transitions, 230 flow [2021-03-11 20:28:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2021-03-11 20:28:07,108 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8297872340425532 [2021-03-11 20:28:07,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2021-03-11 20:28:07,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2021-03-11 20:28:07,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:07,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2021-03-11 20:28:07,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,112 INFO L185 Difference]: Start difference. First operand has 44 places, 34 transitions, 207 flow. Second operand 4 states and 468 transitions. [2021-03-11 20:28:07,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 36 transitions, 230 flow [2021-03-11 20:28:07,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 196 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-11 20:28:07,116 INFO L241 Difference]: Finished difference. Result has 46 places, 35 transitions, 186 flow [2021-03-11 20:28:07,116 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2021-03-11 20:28:07,116 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2021-03-11 20:28:07,116 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 186 flow [2021-03-11 20:28:07,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,117 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:07,117 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:07,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:28:07,117 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1931461249, now seen corresponding path program 2 times [2021-03-11 20:28:07,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:07,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199956123] [2021-03-11 20:28:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:07,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:07,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199956123] [2021-03-11 20:28:07,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:07,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:28:07,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515568640] [2021-03-11 20:28:07,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:28:07,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:07,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:28:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:28:07,191 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 141 [2021-03-11 20:28:07,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:07,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 141 [2021-03-11 20:28:07,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:07,242 INFO L129 PetriNetUnfolder]: 39/95 cut-off events. [2021-03-11 20:28:07,242 INFO L130 PetriNetUnfolder]: For 184/394 co-relation queries the response was YES. [2021-03-11 20:28:07,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 95 events. 39/95 cut-off events. For 184/394 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 284 event pairs, 0 based on Foata normal form. 59/145 useless extension candidates. Maximal degree in co-relation 329. Up to 39 conditions per place. [2021-03-11 20:28:07,244 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 1 selfloop transitions, 17 changer transitions 3/35 dead transitions. [2021-03-11 20:28:07,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 222 flow [2021-03-11 20:28:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:28:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:28:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 685 transitions. [2021-03-11 20:28:07,246 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8096926713947991 [2021-03-11 20:28:07,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 685 transitions. [2021-03-11 20:28:07,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 685 transitions. [2021-03-11 20:28:07,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:07,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 685 transitions. [2021-03-11 20:28:07,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,251 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,251 INFO L185 Difference]: Start difference. First operand has 46 places, 35 transitions, 186 flow. Second operand 6 states and 685 transitions. [2021-03-11 20:28:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 222 flow [2021-03-11 20:28:07,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 209 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-11 20:28:07,255 INFO L241 Difference]: Finished difference. Result has 49 places, 32 transitions, 202 flow [2021-03-11 20:28:07,256 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2021-03-11 20:28:07,256 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2021-03-11 20:28:07,256 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 202 flow [2021-03-11 20:28:07,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,256 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:07,256 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:07,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:28:07,257 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1651349352, now seen corresponding path program 1 times [2021-03-11 20:28:07,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:07,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526458224] [2021-03-11 20:28:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:07,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:07,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:07,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:07,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526458224] [2021-03-11 20:28:07,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:07,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:28:07,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27009358] [2021-03-11 20:28:07,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:07,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:07,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:07,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:07,306 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2021-03-11 20:28:07,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:07,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2021-03-11 20:28:07,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:07,322 INFO L129 PetriNetUnfolder]: 22/61 cut-off events. [2021-03-11 20:28:07,322 INFO L130 PetriNetUnfolder]: For 101/124 co-relation queries the response was YES. [2021-03-11 20:28:07,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 61 events. 22/61 cut-off events. For 101/124 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 146 event pairs, 0 based on Foata normal form. 3/58 useless extension candidates. Maximal degree in co-relation 211. Up to 24 conditions per place. [2021-03-11 20:28:07,323 INFO L132 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2021-03-11 20:28:07,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 206 flow [2021-03-11 20:28:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2021-03-11 20:28:07,324 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.824468085106383 [2021-03-11 20:28:07,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2021-03-11 20:28:07,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2021-03-11 20:28:07,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:07,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2021-03-11 20:28:07,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,327 INFO L185 Difference]: Start difference. First operand has 49 places, 32 transitions, 202 flow. Second operand 4 states and 465 transitions. [2021-03-11 20:28:07,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 206 flow [2021-03-11 20:28:07,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 154 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 20:28:07,329 INFO L241 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2021-03-11 20:28:07,329 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2021-03-11 20:28:07,329 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2021-03-11 20:28:07,329 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2021-03-11 20:28:07,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:07,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:28:07,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:28:07 BasicIcfg [2021-03-11 20:28:07,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:28:07,337 INFO L168 Benchmark]: Toolchain (without parser) took 5445.09 ms. Allocated memory was 255.9 MB in the beginning and 436.2 MB in the end (delta: 180.4 MB). Free memory was 234.3 MB in the beginning and 361.7 MB in the end (delta: -127.3 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:07,337 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:28:07,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.30 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.6 MB in the beginning and 325.1 MB in the end (delta: -91.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:07,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.13 ms. Allocated memory is still 362.8 MB. Free memory was 325.1 MB in the beginning and 323.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:07,339 INFO L168 Benchmark]: Boogie Preprocessor took 34.36 ms. Allocated memory is still 362.8 MB. Free memory was 323.0 MB in the beginning and 321.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:28:07,339 INFO L168 Benchmark]: RCFGBuilder took 418.58 ms. Allocated memory is still 362.8 MB. Free memory was 321.7 MB in the beginning and 337.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:07,341 INFO L168 Benchmark]: TraceAbstraction took 4390.42 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 337.3 MB in the beginning and 361.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:07,346 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 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 534.30 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.6 MB in the beginning and 325.1 MB in the end (delta: -91.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.13 ms. Allocated memory is still 362.8 MB. Free memory was 325.1 MB in the beginning and 323.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.36 ms. Allocated memory is still 362.8 MB. Free memory was 323.0 MB in the beginning and 321.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 418.58 ms. Allocated memory is still 362.8 MB. Free memory was 321.7 MB in the beginning and 337.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4390.42 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 337.3 MB in the beginning and 361.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2901.6ms, 81 PlacesBefore, 33 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, 2387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1405, positive: 1322, positive conditional: 0, positive unconditional: 1322, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 926, positive: 883, positive conditional: 0, positive unconditional: 883, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 926, positive: 866, positive conditional: 0, positive unconditional: 866, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 258, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 172, negative conditional: 0, negative unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1405, positive: 439, positive conditional: 0, positive unconditional: 439, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 926, unknown conditional: 0, unknown unconditional: 926] , Statistics on independence cache: Total cache size (in pairs): 124, Positive cache size: 112, Positive conditional cache size: 0, Positive unconditional cache size: 112, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4272.4ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 467.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2974.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 12 SDslu, 6 SDs, 0 SdLazy, 113 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=8, InterpolantAutomatonStates: 42, 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: 24.2ms SsaConstructionTime, 180.9ms SatisfiabilityAnalysisTime, 458.8ms InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...