/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:04:55,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:04:55,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:04:55,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:04:55,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:04:55,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:04:55,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:04:55,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:04:55,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:04:55,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:04:55,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:04:55,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:04:55,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:04:55,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:04:55,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:04:55,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:04:55,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:04:55,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:04:55,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:04:55,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:04:55,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:04:55,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:04:55,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:04:55,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:04:55,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:04:55,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:04:55,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:04:55,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:04:55,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:04:55,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:04:55,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:04:55,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:04:55,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:04:55,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:04:55,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:04:55,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:04:55,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:04:55,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:04:55,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:04:55,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:04:55,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:04:55,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:04:55,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:04:55,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:04:55,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:04:55,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:04:55,538 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:04:55,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:04:55,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:04:55,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:04:55,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:04:55,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:04:55,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:04:55,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:04:55,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:04:55,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:04:55,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:04:55,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:04:55,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:04:55,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:04:55,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:04:55,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:04:55,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:04:55,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:04:55,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:04:55,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:04:55,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:04:55,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:04:55,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:04:55,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:04:55,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:04:55,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:04:55,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:04:55,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:04:55,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:04:55,861 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:04:55,862 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-10-16 05:04:55,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e8ba12/0b1fa9db515b424cb002a8990f9ab9aa/FLAG21eb35aec [2020-10-16 05:04:56,441 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:04:56,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-10-16 05:04:56,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e8ba12/0b1fa9db515b424cb002a8990f9ab9aa/FLAG21eb35aec [2020-10-16 05:04:56,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346e8ba12/0b1fa9db515b424cb002a8990f9ab9aa [2020-10-16 05:04:56,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:04:56,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:04:56,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:56,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:04:56,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:04:56,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:56" (1/1) ... [2020-10-16 05:04:56,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22308937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:56, skipping insertion in model container [2020-10-16 05:04:56,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:56" (1/1) ... [2020-10-16 05:04:56,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:04:56,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:04:57,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:57,353 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:04:57,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:57,532 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:04:57,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57 WrapperNode [2020-10-16 05:04:57,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:57,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:57,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:04:57,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:04:57,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:57,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:04:57,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:04:57,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:04:57,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (1/1) ... [2020-10-16 05:04:57,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:04:57,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:04:57,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:04:57,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:04:57,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (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 [2020-10-16 05:04:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:04:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:04:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:04:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:04:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:04:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:04:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:04:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:04:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:04:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:04:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:04:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:04:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:04:57,688 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:04:58,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:04:58,075 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:04:58,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:58 BoogieIcfgContainer [2020-10-16 05:04:58,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:04:58,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:04:58,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:04:58,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:04:58,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:04:56" (1/3) ... [2020-10-16 05:04:58,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef86ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:58, skipping insertion in model container [2020-10-16 05:04:58,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:57" (2/3) ... [2020-10-16 05:04:58,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef86ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:58, skipping insertion in model container [2020-10-16 05:04:58,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:58" (3/3) ... [2020-10-16 05:04:58,089 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-10-16 05:04:58,100 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:04:58,106 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:04:58,107 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:04:58,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,137 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,138 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,138 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,138 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,142 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,142 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,142 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,149 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,149 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,150 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,150 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,159 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,160 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:58,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:04:58,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:04:58,216 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:04:58,217 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:04:58,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:04:58,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:04:58,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:04:58,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:04:58,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:04:58,238 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:04:58,299 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 05:04:58,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:58,304 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:04:58,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:04:58,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:58,313 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:04:58,315 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:58,318 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:58,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:58,335 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 05:04:58,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:58,336 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:04:58,338 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:04:59,680 INFO L132 LiptonReduction]: Checked pairs total: 1770 [2020-10-16 05:04:59,680 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:04:59,683 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1373 [2020-10-16 05:04:59,691 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:04:59,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:59,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:59,693 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:59,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:59,699 INFO L82 PathProgramCache]: Analyzing trace with hash -142927657, now seen corresponding path program 1 times [2020-10-16 05:04:59,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:59,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998136019] [2020-10-16 05:04:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:59,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998136019] [2020-10-16 05:04:59,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:59,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:59,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492224012] [2020-10-16 05:04:59,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:59,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:59,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:59,935 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 05:04:59,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:04:59,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:59,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 05:04:59,940 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:59,966 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:04:59,966 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:59,967 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2020-10-16 05:04:59,968 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 05:04:59,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 05:04:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 05:04:59,985 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2020-10-16 05:04:59,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 05:04:59,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 05:04:59,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:59,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 05:04:59,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:00,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:00,002 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:00,004 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2020-10-16 05:05:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 05:05:00,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:05:00,010 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 05:05:00,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 05:05:00,014 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:05:00,014 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 05:05:00,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:00,015 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,015 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:05:00,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash -135790335, now seen corresponding path program 1 times [2020-10-16 05:05:00,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121125501] [2020-10-16 05:05:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121125501] [2020-10-16 05:05:00,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:00,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798241316] [2020-10-16 05:05:00,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:00,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:00,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:00,092 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 05:05:00,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 05:05:00,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 05:05:00,093 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,128 INFO L129 PetriNetUnfolder]: 29/85 cut-off events. [2020-10-16 05:05:00,129 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-10-16 05:05:00,130 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 85 events. 29/85 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 329 event pairs, 16 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 164. Up to 44 conditions per place. [2020-10-16 05:05:00,131 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:05:00,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 79 flow [2020-10-16 05:05:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:05:00,134 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 05:05:00,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:05:00,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:05:00,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:05:00,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:00,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:00,138 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:00,138 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:05:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 79 flow [2020-10-16 05:05:00,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:00,140 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 05:05:00,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 05:05:00,141 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 05:05:00,141 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 05:05:00,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:00,142 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,142 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:05:00,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash -201967492, now seen corresponding path program 1 times [2020-10-16 05:05:00,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787338209] [2020-10-16 05:05:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787338209] [2020-10-16 05:05:00,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:00,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134832064] [2020-10-16 05:05:00,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:00,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:00,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:00,200 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 05:05:00,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 05:05:00,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 05:05:00,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,232 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2020-10-16 05:05:00,233 INFO L130 PetriNetUnfolder]: For 37/49 co-relation queries the response was YES. [2020-10-16 05:05:00,233 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 56 events. 17/56 cut-off events. For 37/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 183 event pairs, 11 based on Foata normal form. 7/57 useless extension candidates. Maximal degree in co-relation 118. Up to 25 conditions per place. [2020-10-16 05:05:00,234 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:05:00,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 84 flow [2020-10-16 05:05:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:05:00,237 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 05:05:00,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:05:00,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:05:00,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:05:00,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:00,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:00,240 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:00,240 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:05:00,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 84 flow [2020-10-16 05:05:00,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:00,242 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 68 flow [2020-10-16 05:05:00,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 05:05:00,243 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:05:00,243 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 68 flow [2020-10-16 05:05:00,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:00,243 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,243 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:05:00,244 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1971283482, now seen corresponding path program 1 times [2020-10-16 05:05:00,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385886480] [2020-10-16 05:05:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385886480] [2020-10-16 05:05:00,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:00,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659672882] [2020-10-16 05:05:00,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:00,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:00,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:00,297 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 05:05:00,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states. [2020-10-16 05:05:00,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 05:05:00,298 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,308 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:05:00,308 INFO L130 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2020-10-16 05:05:00,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 3/24 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2020-10-16 05:05:00,309 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:05:00,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 74 flow [2020-10-16 05:05:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:05:00,311 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8498498498498499 [2020-10-16 05:05:00,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:05:00,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:05:00,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:05:00,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:00,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:00,313 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:00,314 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:05:00,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 74 flow [2020-10-16 05:05:00,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:00,315 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 72 flow [2020-10-16 05:05:00,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 05:05:00,316 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:05:00,316 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 72 flow [2020-10-16 05:05:00,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:00,316 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,316 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:05:00,317 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,317 INFO L82 PathProgramCache]: Analyzing trace with hash 980225973, now seen corresponding path program 1 times [2020-10-16 05:05:00,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031286587] [2020-10-16 05:05:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031286587] [2020-10-16 05:05:00,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:00,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376777200] [2020-10-16 05:05:00,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:00,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:00,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:00,403 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:05:00,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 72 flow. Second operand 4 states. [2020-10-16 05:05:00,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:05:00,404 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,463 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 05:05:00,463 INFO L130 PetriNetUnfolder]: For 243/264 co-relation queries the response was YES. [2020-10-16 05:05:00,464 INFO L80 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 96 events. 42/96 cut-off events. For 243/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 350 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 240. Up to 61 conditions per place. [2020-10-16 05:05:00,465 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 05:05:00,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 124 flow [2020-10-16 05:05:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 05:05:00,468 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2020-10-16 05:05:00,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 05:05:00,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 05:05:00,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 05:05:00,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:00,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:00,471 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:00,471 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 72 flow. Second operand 5 states and 418 transitions. [2020-10-16 05:05:00,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 124 flow [2020-10-16 05:05:00,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:00,473 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2020-10-16 05:05:00,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2020-10-16 05:05:00,474 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:05:00,474 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2020-10-16 05:05:00,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:00,474 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,474 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:05:00,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2055609306, now seen corresponding path program 1 times [2020-10-16 05:05:00,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659593838] [2020-10-16 05:05:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659593838] [2020-10-16 05:05:00,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:00,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261929888] [2020-10-16 05:05:00,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:00,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:00,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:00,512 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:05:00,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states. [2020-10-16 05:05:00,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:05:00,513 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,605 INFO L129 PetriNetUnfolder]: 88/215 cut-off events. [2020-10-16 05:05:00,605 INFO L130 PetriNetUnfolder]: For 858/932 co-relation queries the response was YES. [2020-10-16 05:05:00,608 INFO L80 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 215 events. 88/215 cut-off events. For 858/932 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1157 event pairs, 32 based on Foata normal form. 31/226 useless extension candidates. Maximal degree in co-relation 664. Up to 136 conditions per place. [2020-10-16 05:05:00,613 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2020-10-16 05:05:00,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 152 flow [2020-10-16 05:05:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 05:05:00,615 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7815315315315315 [2020-10-16 05:05:00,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 05:05:00,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 05:05:00,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 05:05:00,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:00,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:00,618 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:00,618 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states and 347 transitions. [2020-10-16 05:05:00,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 152 flow [2020-10-16 05:05:00,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:00,626 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 128 flow [2020-10-16 05:05:00,627 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2020-10-16 05:05:00,627 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 05:05:00,627 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 128 flow [2020-10-16 05:05:00,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:00,627 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,627 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:05:00,628 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1154321482, now seen corresponding path program 2 times [2020-10-16 05:05:00,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128560548] [2020-10-16 05:05:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128560548] [2020-10-16 05:05:00,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:00,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580758703] [2020-10-16 05:05:00,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:05:00,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:05:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:05:00,692 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:05:00,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 128 flow. Second operand 5 states. [2020-10-16 05:05:00,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:05:00,693 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,759 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 05:05:00,759 INFO L130 PetriNetUnfolder]: For 534/609 co-relation queries the response was YES. [2020-10-16 05:05:00,760 INFO L80 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 76 events. 25/76 cut-off events. For 534/609 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 273 event pairs, 3 based on Foata normal form. 40/112 useless extension candidates. Maximal degree in co-relation 287. Up to 52 conditions per place. [2020-10-16 05:05:00,761 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 05:05:00,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 230 flow [2020-10-16 05:05:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:05:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:05:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2020-10-16 05:05:00,764 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516087516087516 [2020-10-16 05:05:00,764 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2020-10-16 05:05:00,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2020-10-16 05:05:00,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2020-10-16 05:05:00,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:05:00,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:05:00,768 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:05:00,768 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 128 flow. Second operand 7 states and 584 transitions. [2020-10-16 05:05:00,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 230 flow [2020-10-16 05:05:00,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 218 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:00,771 INFO L241 Difference]: Finished difference. Result has 44 places, 31 transitions, 204 flow [2020-10-16 05:05:00,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2020-10-16 05:05:00,772 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:05:00,772 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 204 flow [2020-10-16 05:05:00,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:05:00,773 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,773 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:05:00,773 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,774 INFO L82 PathProgramCache]: Analyzing trace with hash 980865761, now seen corresponding path program 1 times [2020-10-16 05:05:00,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997777689] [2020-10-16 05:05:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997777689] [2020-10-16 05:05:00,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:00,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384138896] [2020-10-16 05:05:00,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:00,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:00,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:00,802 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 05:05:00,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states. [2020-10-16 05:05:00,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 05:05:00,803 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,826 INFO L129 PetriNetUnfolder]: 23/87 cut-off events. [2020-10-16 05:05:00,827 INFO L130 PetriNetUnfolder]: For 512/579 co-relation queries the response was YES. [2020-10-16 05:05:00,827 INFO L80 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 87 events. 23/87 cut-off events. For 512/579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 372 event pairs, 3 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 360. Up to 64 conditions per place. [2020-10-16 05:05:00,828 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 6/31 dead transitions. [2020-10-16 05:05:00,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 216 flow [2020-10-16 05:05:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 05:05:00,830 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 05:05:00,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 05:05:00,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 05:05:00,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 05:05:00,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:00,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:00,833 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:00,833 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states and 279 transitions. [2020-10-16 05:05:00,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 216 flow [2020-10-16 05:05:00,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 186 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:00,838 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 145 flow [2020-10-16 05:05:00,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2020-10-16 05:05:00,838 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 05:05:00,838 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 145 flow [2020-10-16 05:05:00,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:00,839 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,839 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:05:00,839 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1436437043, now seen corresponding path program 1 times [2020-10-16 05:05:00,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846087448] [2020-10-16 05:05:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846087448] [2020-10-16 05:05:00,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:00,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222453182] [2020-10-16 05:05:00,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:00,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:00,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:00,873 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:05:00,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states. [2020-10-16 05:05:00,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:05:00,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:00,914 INFO L129 PetriNetUnfolder]: 42/126 cut-off events. [2020-10-16 05:05:00,914 INFO L130 PetriNetUnfolder]: For 576/589 co-relation queries the response was YES. [2020-10-16 05:05:00,915 INFO L80 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 126 events. 42/126 cut-off events. For 576/589 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 535 event pairs, 7 based on Foata normal form. 11/131 useless extension candidates. Maximal degree in co-relation 441. Up to 62 conditions per place. [2020-10-16 05:05:00,916 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2020-10-16 05:05:00,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 173 flow [2020-10-16 05:05:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2020-10-16 05:05:00,918 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2020-10-16 05:05:00,918 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2020-10-16 05:05:00,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2020-10-16 05:05:00,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:00,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2020-10-16 05:05:00,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:00,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:00,921 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:00,921 INFO L185 Difference]: Start difference. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states and 346 transitions. [2020-10-16 05:05:00,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 173 flow [2020-10-16 05:05:00,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 160 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:00,925 INFO L241 Difference]: Finished difference. Result has 42 places, 26 transitions, 145 flow [2020-10-16 05:05:00,925 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2020-10-16 05:05:00,925 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 05:05:00,926 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 145 flow [2020-10-16 05:05:00,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:00,926 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:00,926 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:00,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:05:00,926 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:00,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:00,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1641346049, now seen corresponding path program 2 times [2020-10-16 05:05:00,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:00,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969831282] [2020-10-16 05:05:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:00,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969831282] [2020-10-16 05:05:00,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:00,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:00,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479211048] [2020-10-16 05:05:00,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:00,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:00,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:00,959 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:05:00,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 145 flow. Second operand 4 states. [2020-10-16 05:05:00,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:00,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:05:00,960 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:01,003 INFO L129 PetriNetUnfolder]: 48/152 cut-off events. [2020-10-16 05:05:01,003 INFO L130 PetriNetUnfolder]: For 355/374 co-relation queries the response was YES. [2020-10-16 05:05:01,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 152 events. 48/152 cut-off events. For 355/374 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 748 event pairs, 6 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 496. Up to 74 conditions per place. [2020-10-16 05:05:01,005 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 2 changer transitions 5/31 dead transitions. [2020-10-16 05:05:01,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 191 flow [2020-10-16 05:05:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2020-10-16 05:05:01,007 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7783783783783784 [2020-10-16 05:05:01,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2020-10-16 05:05:01,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2020-10-16 05:05:01,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:01,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2020-10-16 05:05:01,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:01,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:01,010 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:01,010 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 145 flow. Second operand 5 states and 432 transitions. [2020-10-16 05:05:01,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 191 flow [2020-10-16 05:05:01,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:01,013 INFO L241 Difference]: Finished difference. Result has 47 places, 25 transitions, 142 flow [2020-10-16 05:05:01,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2020-10-16 05:05:01,013 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2020-10-16 05:05:01,013 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 142 flow [2020-10-16 05:05:01,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:01,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:01,014 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:01,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:05:01,014 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1693034047, now seen corresponding path program 3 times [2020-10-16 05:05:01,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:01,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747996111] [2020-10-16 05:05:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:01,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747996111] [2020-10-16 05:05:01,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:01,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:05:01,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433669885] [2020-10-16 05:05:01,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:05:01,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:05:01,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:05:01,064 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:05:01,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 142 flow. Second operand 6 states. [2020-10-16 05:05:01,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:01,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:05:01,065 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:01,115 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 05:05:01,115 INFO L130 PetriNetUnfolder]: For 123/181 co-relation queries the response was YES. [2020-10-16 05:05:01,116 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 70 events. 15/70 cut-off events. For 123/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 269 event pairs, 0 based on Foata normal form. 29/95 useless extension candidates. Maximal degree in co-relation 257. Up to 37 conditions per place. [2020-10-16 05:05:01,116 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-10-16 05:05:01,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 170 flow [2020-10-16 05:05:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:05:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:05:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2020-10-16 05:05:01,119 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2020-10-16 05:05:01,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2020-10-16 05:05:01,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2020-10-16 05:05:01,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:01,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2020-10-16 05:05:01,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:05:01,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:05:01,123 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:05:01,123 INFO L185 Difference]: Start difference. First operand has 47 places, 25 transitions, 142 flow. Second operand 7 states and 574 transitions. [2020-10-16 05:05:01,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 170 flow [2020-10-16 05:05:01,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-16 05:05:01,125 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 05:05:01,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 05:05:01,125 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:05:01,125 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 05:05:01,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:05:01,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:05:01,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:05:01 BasicIcfg [2020-10-16 05:05:01,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:05:01,133 INFO L168 Benchmark]: Toolchain (without parser) took 4365.05 ms. Allocated memory was 253.8 MB in the beginning and 372.2 MB in the end (delta: 118.5 MB). Free memory was 208.9 MB in the beginning and 193.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 134.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:01,134 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:05:01,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.89 ms. Allocated memory was 253.8 MB in the beginning and 319.3 MB in the end (delta: 65.5 MB). Free memory was 208.9 MB in the beginning and 274.6 MB in the end (delta: -65.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:01,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.75 ms. Allocated memory is still 319.3 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:05:01,136 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 ms. Allocated memory is still 319.3 MB. Free memory was 272.1 MB in the beginning and 269.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:01,137 INFO L168 Benchmark]: RCFGBuilder took 460.23 ms. Allocated memory is still 319.3 MB. Free memory was 269.5 MB in the beginning and 247.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:01,138 INFO L168 Benchmark]: TraceAbstraction took 3051.83 ms. Allocated memory was 319.3 MB in the beginning and 372.2 MB in the end (delta: 53.0 MB). Free memory was 247.4 MB in the beginning and 193.3 MB in the end (delta: 54.1 MB). Peak memory consumption was 107.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:01,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 765.89 ms. Allocated memory was 253.8 MB in the beginning and 319.3 MB in the end (delta: 65.5 MB). Free memory was 208.9 MB in the beginning and 274.6 MB in the end (delta: -65.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.75 ms. Allocated memory is still 319.3 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.15 ms. Allocated memory is still 319.3 MB. Free memory was 272.1 MB in the beginning and 269.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 460.23 ms. Allocated memory is still 319.3 MB. Free memory was 269.5 MB in the beginning and 247.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3051.83 ms. Allocated memory was 319.3 MB in the beginning and 372.2 MB in the end (delta: 53.0 MB). Free memory was 247.4 MB in the beginning and 193.3 MB in the end (delta: 54.1 MB). Peak memory consumption was 107.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 576 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 79 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1770 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 49 SDtfs, 23 SDslu, 16 SDs, 0 SdLazy, 132 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...