/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:28:49,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:28:49,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:28:49,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:28:49,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:28:49,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:28:49,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:28:49,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:28:49,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:28:49,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:28:49,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:28:49,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:28:49,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:28:49,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:28:49,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:28:49,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:28:49,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:28:49,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:28:49,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:28:49,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:28:49,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:28:49,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:28:49,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:28:49,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:28:49,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:28:49,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:28:49,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:28:49,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:28:49,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:28:49,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:28:49,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:28:49,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:28:49,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:28:49,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:28:49,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:28:49,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:28:49,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:28:49,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:28:49,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:28:49,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:28:49,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:28:49,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:28:49,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:28:49,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:28:49,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:28:49,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:28:49,720 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:28:49,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:28:49,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:28:49,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:28:49,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:28:49,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:28:49,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:28:49,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:28:49,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:28:49,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:28:49,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:28:49,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:28:49,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:28:50,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:28:50,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:28:50,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:28:50,015 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:28:50,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2021-06-10 12:28:50,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfe8ad53/24f9e6caeb4c4e068cf34be1e1c548de/FLAG1b74d3fa0 [2021-06-10 12:28:50,470 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:28:50,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2021-06-10 12:28:50,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfe8ad53/24f9e6caeb4c4e068cf34be1e1c548de/FLAG1b74d3fa0 [2021-06-10 12:28:50,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfe8ad53/24f9e6caeb4c4e068cf34be1e1c548de [2021-06-10 12:28:50,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:28:50,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:28:50,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:28:50,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:28:50,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:28:50,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717ec23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50, skipping insertion in model container [2021-06-10 12:28:50,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:28:50,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:28:50,703 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/safe024_tso.oepc.i[950,963] [2021-06-10 12:28:50,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:28:50,838 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:28:50,846 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/safe024_tso.oepc.i[950,963] [2021-06-10 12:28:50,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:28:50,923 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:28:50,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50 WrapperNode [2021-06-10 12:28:50,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:28:50,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:28:50,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:28:50,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:28:50,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:28:50,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:28:50,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:28:50,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:28:50,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... [2021-06-10 12:28:50,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:28:50,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:28:50,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:28:50,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:28:50,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:28:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:28:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:28:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:28:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:28:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:28:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:28:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:28:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:28:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:28:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:28:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:28:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:28:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:28:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:28:51,040 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:28:51,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:28:51,335 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:28:51,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:28:51 BoogieIcfgContainer [2021-06-10 12:28:51,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:28:51,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:28:51,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:28:51,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:28:51,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:28:50" (1/3) ... [2021-06-10 12:28:51,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108621bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:28:51, skipping insertion in model container [2021-06-10 12:28:51,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:28:50" (2/3) ... [2021-06-10 12:28:51,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108621bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:28:51, skipping insertion in model container [2021-06-10 12:28:51,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:28:51" (3/3) ... [2021-06-10 12:28:51,343 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2021-06-10 12:28:51,348 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:28:51,351 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:28:51,352 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:28:51,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,380 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,386 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,386 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,397 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,397 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:28:51,399 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:28:51,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:28:51,434 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:28:51,434 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:28:51,434 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:28:51,434 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:28:51,434 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:28:51,434 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:28:51,435 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:28:51,435 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:28:51,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-06-10 12:28:51,482 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-06-10 12:28:51,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:28:51,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 12:28:51,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-06-10 12:28:51,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-06-10 12:28:51,505 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 12:28:51,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:28:51,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:51,506 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:51,506 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:51,510 INFO L82 PathProgramCache]: Analyzing trace with hash -125231075, now seen corresponding path program 1 times [2021-06-10 12:28:51,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:51,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850512426] [2021-06-10 12:28:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:51,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:51,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:51,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:51,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:51,759 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:28:51,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:28:51,770 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:28:51,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:28:51,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:51,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:51,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:51,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:51,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:51,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:51,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850512426] [2021-06-10 12:28:51,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:51,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:28:51,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809662708] [2021-06-10 12:28:51,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:28:51,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:51,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:28:51,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:28:51,823 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-06-10 12:28:51,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:51,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:51,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-06-10 12:28:51,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:52,011 INFO L129 PetriNetUnfolder]: 46/177 cut-off events. [2021-06-10 12:28:52,011 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:28:52,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 177 events. 46/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 645 event pairs, 10 based on Foata normal form. 8/179 useless extension candidates. Maximal degree in co-relation 255. Up to 48 conditions per place. [2021-06-10 12:28:52,013 INFO L132 encePairwiseOnDemand]: 69/76 looper letters, 11 selfloop transitions, 2 changer transitions 19/80 dead transitions. [2021-06-10 12:28:52,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 233 flow [2021-06-10 12:28:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:28:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:28:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 576 transitions. [2021-06-10 12:28:52,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-06-10 12:28:52,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 576 transitions. [2021-06-10 12:28:52,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 576 transitions. [2021-06-10 12:28:52,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:52,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 576 transitions. [2021-06-10 12:28:52,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.0) internal successors, (576), 9 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,047 INFO L185 Difference]: Start difference. First operand has 70 places, 61 transitions, 131 flow. Second operand 9 states and 576 transitions. [2021-06-10 12:28:52,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 233 flow [2021-06-10 12:28:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:28:52,052 INFO L241 Difference]: Finished difference. Result has 82 places, 60 transitions, 146 flow [2021-06-10 12:28:52,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2021-06-10 12:28:52,068 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2021-06-10 12:28:52,068 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 146 flow [2021-06-10 12:28:52,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,069 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:52,069 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:52,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:28:52,069 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:52,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2112554334, now seen corresponding path program 1 times [2021-06-10 12:28:52,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:52,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606475308] [2021-06-10 12:28:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:52,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:52,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:52,181 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:28:52,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:28:52,195 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:28:52,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:28:52,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:52,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:52,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:52,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606475308] [2021-06-10 12:28:52,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:52,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:28:52,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346606919] [2021-06-10 12:28:52,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:28:52,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:52,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:28:52,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:28:52,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-06-10 12:28:52,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:52,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-06-10 12:28:52,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:52,550 INFO L129 PetriNetUnfolder]: 110/304 cut-off events. [2021-06-10 12:28:52,551 INFO L130 PetriNetUnfolder]: For 84/112 co-relation queries the response was YES. [2021-06-10 12:28:52,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 304 events. 110/304 cut-off events. For 84/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1436 event pairs, 16 based on Foata normal form. 10/307 useless extension candidates. Maximal degree in co-relation 587. Up to 74 conditions per place. [2021-06-10 12:28:52,556 INFO L132 encePairwiseOnDemand]: 65/76 looper letters, 17 selfloop transitions, 10 changer transitions 44/117 dead transitions. [2021-06-10 12:28:52,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 117 transitions, 455 flow [2021-06-10 12:28:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:28:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:28:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1061 transitions. [2021-06-10 12:28:52,563 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8212074303405573 [2021-06-10 12:28:52,563 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1061 transitions. [2021-06-10 12:28:52,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1061 transitions. [2021-06-10 12:28:52,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:52,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1061 transitions. [2021-06-10 12:28:52,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 62.411764705882355) internal successors, (1061), 17 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 76.0) internal successors, (1368), 18 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,598 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 76.0) internal successors, (1368), 18 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,598 INFO L185 Difference]: Start difference. First operand has 82 places, 60 transitions, 146 flow. Second operand 17 states and 1061 transitions. [2021-06-10 12:28:52,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 117 transitions, 455 flow [2021-06-10 12:28:52,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 393 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-06-10 12:28:52,603 INFO L241 Difference]: Finished difference. Result has 99 places, 66 transitions, 239 flow [2021-06-10 12:28:52,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=239, PETRI_PLACES=99, PETRI_TRANSITIONS=66} [2021-06-10 12:28:52,603 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 29 predicate places. [2021-06-10 12:28:52,604 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 66 transitions, 239 flow [2021-06-10 12:28:52,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:52,604 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:52,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:28:52,604 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash -652155148, now seen corresponding path program 1 times [2021-06-10 12:28:52,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:52,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120906516] [2021-06-10 12:28:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:52,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:52,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:52,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:52,699 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:28:52,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:28:52,706 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:28:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:28:52,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:52,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:52,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:52,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120906516] [2021-06-10 12:28:52,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:52,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:28:52,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133629402] [2021-06-10 12:28:52,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:28:52,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:52,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:28:52,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:28:52,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-06-10 12:28:52,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 66 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:52,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-06-10 12:28:52,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:52,925 INFO L129 PetriNetUnfolder]: 58/209 cut-off events. [2021-06-10 12:28:52,926 INFO L130 PetriNetUnfolder]: For 1409/1523 co-relation queries the response was YES. [2021-06-10 12:28:52,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 209 events. 58/209 cut-off events. For 1409/1523 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 834 event pairs, 11 based on Foata normal form. 8/211 useless extension candidates. Maximal degree in co-relation 865. Up to 62 conditions per place. [2021-06-10 12:28:52,932 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 12 selfloop transitions, 4 changer transitions 31/93 dead transitions. [2021-06-10 12:28:52,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 696 flow [2021-06-10 12:28:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:28:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:28:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 624 transitions. [2021-06-10 12:28:52,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2021-06-10 12:28:52,934 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 624 transitions. [2021-06-10 12:28:52,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 624 transitions. [2021-06-10 12:28:52,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:52,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 624 transitions. [2021-06-10 12:28:52,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,937 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,937 INFO L185 Difference]: Start difference. First operand has 99 places, 66 transitions, 239 flow. Second operand 10 states and 624 transitions. [2021-06-10 12:28:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 696 flow [2021-06-10 12:28:52,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 537 flow, removed 75 selfloop flow, removed 10 redundant places. [2021-06-10 12:28:52,945 INFO L241 Difference]: Finished difference. Result has 94 places, 60 transitions, 200 flow [2021-06-10 12:28:52,945 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=200, PETRI_PLACES=94, PETRI_TRANSITIONS=60} [2021-06-10 12:28:52,945 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 24 predicate places. [2021-06-10 12:28:52,945 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 60 transitions, 200 flow [2021-06-10 12:28:52,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:52,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:52,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:52,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:28:52,946 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1990940375, now seen corresponding path program 1 times [2021-06-10 12:28:52,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:52,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470275326] [2021-06-10 12:28:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:53,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,007 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:28:53,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:28:53,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:28:53,025 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:28:53,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:53,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:53,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470275326] [2021-06-10 12:28:53,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:53,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:28:53,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732391618] [2021-06-10 12:28:53,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:28:53,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:28:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:28:53,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:28:53,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 60 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:53,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:28:53,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:53,145 INFO L129 PetriNetUnfolder]: 176/457 cut-off events. [2021-06-10 12:28:53,145 INFO L130 PetriNetUnfolder]: For 601/626 co-relation queries the response was YES. [2021-06-10 12:28:53,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 457 events. 176/457 cut-off events. For 601/626 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2507 event pairs, 35 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 1079. Up to 106 conditions per place. [2021-06-10 12:28:53,148 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 21 selfloop transitions, 15 changer transitions 5/90 dead transitions. [2021-06-10 12:28:53,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 342 flow [2021-06-10 12:28:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:28:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:28:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 663 transitions. [2021-06-10 12:28:53,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8723684210526316 [2021-06-10 12:28:53,150 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 663 transitions. [2021-06-10 12:28:53,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 663 transitions. [2021-06-10 12:28:53,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:53,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 663 transitions. [2021-06-10 12:28:53,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,153 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,153 INFO L185 Difference]: Start difference. First operand has 94 places, 60 transitions, 200 flow. Second operand 10 states and 663 transitions. [2021-06-10 12:28:53,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 342 flow [2021-06-10 12:28:53,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 302 flow, removed 12 selfloop flow, removed 14 redundant places. [2021-06-10 12:28:53,156 INFO L241 Difference]: Finished difference. Result has 88 places, 73 transitions, 269 flow [2021-06-10 12:28:53,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2021-06-10 12:28:53,156 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2021-06-10 12:28:53,156 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 269 flow [2021-06-10 12:28:53,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:53,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:53,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:28:53,157 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash -911761956, now seen corresponding path program 1 times [2021-06-10 12:28:53,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:53,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726349050] [2021-06-10 12:28:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:53,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,190 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:28:53,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:28:53,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:28:53,210 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:28:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:53,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:53,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726349050] [2021-06-10 12:28:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:28:53,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800932995] [2021-06-10 12:28:53,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:28:53,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:28:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:28:53,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:28:53,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 269 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:53,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:28:53,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:53,392 INFO L129 PetriNetUnfolder]: 146/418 cut-off events. [2021-06-10 12:28:53,392 INFO L130 PetriNetUnfolder]: For 905/1087 co-relation queries the response was YES. [2021-06-10 12:28:53,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 418 events. 146/418 cut-off events. For 905/1087 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2343 event pairs, 9 based on Foata normal form. 37/436 useless extension candidates. Maximal degree in co-relation 1338. Up to 152 conditions per place. [2021-06-10 12:28:53,396 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 20 selfloop transitions, 28 changer transitions 11/108 dead transitions. [2021-06-10 12:28:53,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 108 transitions, 611 flow [2021-06-10 12:28:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:28:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:28:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 861 transitions. [2021-06-10 12:28:53,401 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8714574898785425 [2021-06-10 12:28:53,402 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 861 transitions. [2021-06-10 12:28:53,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 861 transitions. [2021-06-10 12:28:53,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:53,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 861 transitions. [2021-06-10 12:28:53,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.23076923076923) internal successors, (861), 13 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 76.0) internal successors, (1064), 14 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,407 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 76.0) internal successors, (1064), 14 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,407 INFO L185 Difference]: Start difference. First operand has 88 places, 73 transitions, 269 flow. Second operand 13 states and 861 transitions. [2021-06-10 12:28:53,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 108 transitions, 611 flow [2021-06-10 12:28:53,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 108 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 12:28:53,411 INFO L241 Difference]: Finished difference. Result has 105 places, 90 transitions, 493 flow [2021-06-10 12:28:53,411 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=493, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2021-06-10 12:28:53,411 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2021-06-10 12:28:53,411 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 493 flow [2021-06-10 12:28:53,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,412 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:53,412 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:53,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:28:53,412 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1873317807, now seen corresponding path program 1 times [2021-06-10 12:28:53,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:53,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583025015] [2021-06-10 12:28:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:53,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,501 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:28:53,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:28:53,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:28:53,523 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:28:53,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:53,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:53,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583025015] [2021-06-10 12:28:53,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:53,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:28:53,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330438896] [2021-06-10 12:28:53,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:28:53,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:28:53,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:28:53,542 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:28:53,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 493 flow. Second operand has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:53,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:28:53,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:53,760 INFO L129 PetriNetUnfolder]: 99/352 cut-off events. [2021-06-10 12:28:53,760 INFO L130 PetriNetUnfolder]: For 1627/1981 co-relation queries the response was YES. [2021-06-10 12:28:53,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 352 events. 99/352 cut-off events. For 1627/1981 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2020 event pairs, 1 based on Foata normal form. 49/383 useless extension candidates. Maximal degree in co-relation 1398. Up to 112 conditions per place. [2021-06-10 12:28:53,763 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 16 selfloop transitions, 32 changer transitions 19/116 dead transitions. [2021-06-10 12:28:53,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 809 flow [2021-06-10 12:28:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 12:28:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 12:28:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1044 transitions. [2021-06-10 12:28:53,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8585526315789473 [2021-06-10 12:28:53,765 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1044 transitions. [2021-06-10 12:28:53,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1044 transitions. [2021-06-10 12:28:53,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:53,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1044 transitions. [2021-06-10 12:28:53,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 65.25) internal successors, (1044), 16 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 76.0) internal successors, (1292), 17 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,769 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 76.0) internal successors, (1292), 17 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,770 INFO L185 Difference]: Start difference. First operand has 105 places, 90 transitions, 493 flow. Second operand 16 states and 1044 transitions. [2021-06-10 12:28:53,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 809 flow [2021-06-10 12:28:53,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 729 flow, removed 32 selfloop flow, removed 5 redundant places. [2021-06-10 12:28:53,775 INFO L241 Difference]: Finished difference. Result has 122 places, 91 transitions, 527 flow [2021-06-10 12:28:53,775 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=527, PETRI_PLACES=122, PETRI_TRANSITIONS=91} [2021-06-10 12:28:53,775 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 52 predicate places. [2021-06-10 12:28:53,775 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 91 transitions, 527 flow [2021-06-10 12:28:53,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:53,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:53,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:28:53,776 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash -694308363, now seen corresponding path program 1 times [2021-06-10 12:28:53,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:53,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793719913] [2021-06-10 12:28:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:53,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:53,817 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:28:53,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:28:53,827 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:28:53,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:28:53,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:53,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:53,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:53,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:53,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793719913] [2021-06-10 12:28:53,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:53,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:28:53,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539839349] [2021-06-10 12:28:53,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:28:53,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:28:53,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:28:53,865 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-06-10 12:28:53,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 91 transitions, 527 flow. Second operand has 8 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:53,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-06-10 12:28:53,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:53,970 INFO L129 PetriNetUnfolder]: 91/466 cut-off events. [2021-06-10 12:28:53,970 INFO L130 PetriNetUnfolder]: For 1369/1427 co-relation queries the response was YES. [2021-06-10 12:28:53,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 466 events. 91/466 cut-off events. For 1369/1427 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3410 event pairs, 0 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 1527. Up to 71 conditions per place. [2021-06-10 12:28:53,974 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 11 selfloop transitions, 3 changer transitions 33/98 dead transitions. [2021-06-10 12:28:53,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 98 transitions, 600 flow [2021-06-10 12:28:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:28:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:28:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 486 transitions. [2021-06-10 12:28:53,975 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7993421052631579 [2021-06-10 12:28:53,975 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 486 transitions. [2021-06-10 12:28:53,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 486 transitions. [2021-06-10 12:28:53,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:53,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 486 transitions. [2021-06-10 12:28:53,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.75) internal successors, (486), 8 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,978 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,978 INFO L185 Difference]: Start difference. First operand has 122 places, 91 transitions, 527 flow. Second operand 8 states and 486 transitions. [2021-06-10 12:28:53,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 98 transitions, 600 flow [2021-06-10 12:28:53,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 479 flow, removed 27 selfloop flow, removed 18 redundant places. [2021-06-10 12:28:53,987 INFO L241 Difference]: Finished difference. Result has 113 places, 65 transitions, 241 flow [2021-06-10 12:28:53,987 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=113, PETRI_TRANSITIONS=65} [2021-06-10 12:28:53,987 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 43 predicate places. [2021-06-10 12:28:53,987 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 65 transitions, 241 flow [2021-06-10 12:28:53,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:53,988 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:28:53,988 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:28:53,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:28:53,988 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:28:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:28:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash -489127177, now seen corresponding path program 2 times [2021-06-10 12:28:53,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:28:53,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975309173] [2021-06-10 12:28:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:28:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:28:54,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:54,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:54,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:54,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:28:54,038 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:28:54,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:28:54,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:54,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:54,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:54,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:28:54,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:28:54,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:28:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:28:54,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975309173] [2021-06-10 12:28:54,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:28:54,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:28:54,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55372246] [2021-06-10 12:28:54,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:28:54,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:28:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:28:54,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:28:54,067 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:28:54,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 65 transitions, 241 flow. Second operand has 7 states, 7 states have (on average 63.42857142857143) internal successors, (444), 7 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:54,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:28:54,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:28:54,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:28:54,120 INFO L129 PetriNetUnfolder]: 7/97 cut-off events. [2021-06-10 12:28:54,120 INFO L130 PetriNetUnfolder]: For 72/73 co-relation queries the response was YES. [2021-06-10 12:28:54,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 97 events. 7/97 cut-off events. For 72/73 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 198 event pairs, 0 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 189. Up to 12 conditions per place. [2021-06-10 12:28:54,121 INFO L132 encePairwiseOnDemand]: 70/76 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2021-06-10 12:28:54,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 64 transitions, 259 flow [2021-06-10 12:28:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:28:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:28:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 445 transitions. [2021-06-10 12:28:54,122 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8364661654135338 [2021-06-10 12:28:54,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 445 transitions. [2021-06-10 12:28:54,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 445 transitions. [2021-06-10 12:28:54,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:28:54,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 445 transitions. [2021-06-10 12:28:54,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.57142857142857) internal successors, (445), 7 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:54,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:54,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:54,124 INFO L185 Difference]: Start difference. First operand has 113 places, 65 transitions, 241 flow. Second operand 7 states and 445 transitions. [2021-06-10 12:28:54,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 64 transitions, 259 flow [2021-06-10 12:28:54,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 186 flow, removed 16 selfloop flow, removed 21 redundant places. [2021-06-10 12:28:54,125 INFO L241 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2021-06-10 12:28:54,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2021-06-10 12:28:54,125 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2021-06-10 12:28:54,125 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2021-06-10 12:28:54,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 63.42857142857143) internal successors, (444), 7 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:28:54,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:28:54,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:28:54 BasicIcfg [2021-06-10 12:28:54,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:28:54,130 INFO L168 Benchmark]: Toolchain (without parser) took 3629.22 ms. Allocated memory was 333.4 MB in the beginning and 448.8 MB in the end (delta: 115.3 MB). Free memory was 296.1 MB in the beginning and 263.0 MB in the end (delta: 33.0 MB). Peak memory consumption was 150.4 MB. Max. memory is 16.0 GB. [2021-06-10 12:28:54,130 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 333.4 MB. Free memory is still 314.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:28:54,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.76 ms. Allocated memory is still 333.4 MB. Free memory was 295.9 MB in the beginning and 294.9 MB in the end (delta: 986.4 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:28:54,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.25 ms. Allocated memory is still 333.4 MB. Free memory was 294.9 MB in the beginning and 292.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:28:54,131 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 ms. Allocated memory is still 333.4 MB. Free memory was 292.8 MB in the beginning and 291.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:28:54,131 INFO L168 Benchmark]: RCFGBuilder took 372.40 ms. Allocated memory is still 333.4 MB. Free memory was 291.7 MB in the beginning and 266.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:28:54,131 INFO L168 Benchmark]: TraceAbstraction took 2790.33 ms. Allocated memory was 333.4 MB in the beginning and 448.8 MB in the end (delta: 115.3 MB). Free memory was 266.6 MB in the beginning and 263.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 119.9 MB. Max. memory is 16.0 GB. [2021-06-10 12:28:54,132 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 333.4 MB. Free memory is still 314.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 422.76 ms. Allocated memory is still 333.4 MB. Free memory was 295.9 MB in the beginning and 294.9 MB in the end (delta: 986.4 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.25 ms. Allocated memory is still 333.4 MB. Free memory was 294.9 MB in the beginning and 292.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.19 ms. Allocated memory is still 333.4 MB. Free memory was 292.8 MB in the beginning and 291.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 372.40 ms. Allocated memory is still 333.4 MB. Free memory was 291.7 MB in the beginning and 266.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2790.33 ms. Allocated memory was 333.4 MB in the beginning and 448.8 MB in the end (delta: 115.3 MB). Free memory was 266.6 MB in the beginning and 263.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 119.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2695.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1557.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 53.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 102 SDtfs, 278 SDslu, 367 SDs, 0 SdLazy, 351 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 248.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 912.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=527occurred in iteration=6, InterpolantAutomatonStates: 90, 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: 22.5ms SsaConstructionTime, 165.8ms SatisfiabilityAnalysisTime, 734.9ms InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 368 ConstructedInterpolants, 0 QuantifiedInterpolants, 1508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...