/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:44:10,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:44:10,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:44:10,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:44:10,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:44:10,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:44:10,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:44:10,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:44:10,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:44:10,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:44:10,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:44:10,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:44:10,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:44:10,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:44:10,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:44:10,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:44:10,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:44:10,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:44:10,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:44:10,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:44:10,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:44:10,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:44:10,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:44:10,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:44:10,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:44:10,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:44:10,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:44:10,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:44:10,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:44:10,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:44:10,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:44:10,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:44:10,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:44:10,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:44:10,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:44:10,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:44:10,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:44:10,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:44:10,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:44:10,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:44:10,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:44:10,569 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:44:10,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:44:10,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:44:10,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:44:10,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:44:10,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:44:10,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:44:10,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:44:10,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:44:10,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:44:10,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:44:10,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:44:10,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:44:10,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:44:10,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:44:10,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:44:10,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:44:10,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:44:10,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:44:10,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:44:10,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:44:10,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:44:10,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:44:10,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:44:10,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:44:10,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:44:10,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:44:10,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:44:10,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:44:10,950 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:44:10,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-10-16 01:44:11,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceac60b48/8d31066fe45040e28cf9a50f5b54bd32/FLAG933e868f5 [2020-10-16 01:44:11,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:44:11,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-10-16 01:44:11,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceac60b48/8d31066fe45040e28cf9a50f5b54bd32/FLAG933e868f5 [2020-10-16 01:44:11,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceac60b48/8d31066fe45040e28cf9a50f5b54bd32 [2020-10-16 01:44:11,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:44:11,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:44:11,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:11,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:44:11,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:44:11,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:11" (1/1) ... [2020-10-16 01:44:11,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ce3e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:11, skipping insertion in model container [2020-10-16 01:44:11,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:11" (1/1) ... [2020-10-16 01:44:11,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:44:12,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:44:12,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:12,496 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:44:12,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:12,613 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:44:12,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12 WrapperNode [2020-10-16 01:44:12,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:12,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:12,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:44:12,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:44:12,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:12,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:44:12,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:44:12,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:44:12,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (1/1) ... [2020-10-16 01:44:12,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:44:12,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:44:12,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:44:12,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:44:12,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (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 01:44:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:44:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:44:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:44:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:44:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:44:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:44:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:44:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:44:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:44:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:44:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 01:44:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 01:44:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:44:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:44:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:44:12,784 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 01:44:13,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:44:13,192 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:44:13,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:13 BoogieIcfgContainer [2020-10-16 01:44:13,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:44:13,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:44:13,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:44:13,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:44:13,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:11" (1/3) ... [2020-10-16 01:44:13,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40299d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:13, skipping insertion in model container [2020-10-16 01:44:13,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:12" (2/3) ... [2020-10-16 01:44:13,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40299d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:13, skipping insertion in model container [2020-10-16 01:44:13,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:13" (3/3) ... [2020-10-16 01:44:13,211 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-10-16 01:44:13,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:44:13,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:44:13,232 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:44:13,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,275 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,275 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,275 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,275 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,279 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,279 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,280 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,280 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:13,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:44:13,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:44:13,334 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:44:13,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:44:13,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:44:13,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:44:13,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:44:13,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:44:13,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:44:13,350 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-10-16 01:44:13,398 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-10-16 01:44:13,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:13,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 01:44:13,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 82 transitions, 184 flow [2020-10-16 01:44:13,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 65 transitions, 142 flow [2020-10-16 01:44:13,413 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:44:13,415 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 65 transitions, 142 flow [2020-10-16 01:44:13,418 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 65 transitions, 142 flow [2020-10-16 01:44:13,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions, 142 flow [2020-10-16 01:44:13,441 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2020-10-16 01:44:13,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:13,442 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 1/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:44:13,445 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 01:44:14,930 INFO L132 LiptonReduction]: Checked pairs total: 2240 [2020-10-16 01:44:14,931 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 01:44:14,934 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1524 [2020-10-16 01:44:14,943 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:44:14,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:14,944 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:14,945 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:14,945 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1876924757, now seen corresponding path program 1 times [2020-10-16 01:44:14,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:14,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895899713] [2020-10-16 01:44:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:15,211 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 01:44:15,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895899713] [2020-10-16 01:44:15,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:15,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:15,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386983866] [2020-10-16 01:44:15,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:15,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:15,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:15,242 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2020-10-16 01:44:15,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states. [2020-10-16 01:44:15,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:15,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2020-10-16 01:44:15,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:15,270 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-10-16 01:44:15,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:15,271 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:44:15,272 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 01:44:15,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 58 flow [2020-10-16 01:44:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2020-10-16 01:44:15,290 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2020-10-16 01:44:15,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2020-10-16 01:44:15,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2020-10-16 01:44:15,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:15,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2020-10-16 01:44:15,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:15,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:15,308 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:15,310 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 342 transitions. [2020-10-16 01:44:15,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 58 flow [2020-10-16 01:44:15,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:15,319 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 56 flow [2020-10-16 01:44:15,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 01:44:15,323 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 01:44:15,323 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 56 flow [2020-10-16 01:44:15,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:15,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:15,324 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:15,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:44:15,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:15,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1944873586, now seen corresponding path program 1 times [2020-10-16 01:44:15,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:15,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105941544] [2020-10-16 01:44:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:15,453 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 01:44:15,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105941544] [2020-10-16 01:44:15,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:15,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:15,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447970610] [2020-10-16 01:44:15,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:15,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:15,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:15,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:15,459 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 01:44:15,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states. [2020-10-16 01:44:15,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:15,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 01:44:15,460 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:15,496 INFO L129 PetriNetUnfolder]: 5/41 cut-off events. [2020-10-16 01:44:15,496 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2020-10-16 01:44:15,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 41 events. 5/41 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 105 event pairs, 1 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2020-10-16 01:44:15,498 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 4 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 01:44:15,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 81 flow [2020-10-16 01:44:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2020-10-16 01:44:15,502 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8206106870229007 [2020-10-16 01:44:15,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2020-10-16 01:44:15,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2020-10-16 01:44:15,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:15,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2020-10-16 01:44:15,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:15,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:15,507 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:15,507 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states and 430 transitions. [2020-10-16 01:44:15,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 81 flow [2020-10-16 01:44:15,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 75 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:15,509 INFO L241 Difference]: Finished difference. Result has 35 places, 20 transitions, 66 flow [2020-10-16 01:44:15,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2020-10-16 01:44:15,510 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 01:44:15,510 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 66 flow [2020-10-16 01:44:15,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:15,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:15,511 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:15,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:44:15,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:15,512 INFO L82 PathProgramCache]: Analyzing trace with hash 161151609, now seen corresponding path program 1 times [2020-10-16 01:44:15,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:15,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577877396] [2020-10-16 01:44:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:15,605 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 01:44:15,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577877396] [2020-10-16 01:44:15,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:15,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:15,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137797105] [2020-10-16 01:44:15,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:15,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:15,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:15,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:15,611 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2020-10-16 01:44:15,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 66 flow. Second operand 3 states. [2020-10-16 01:44:15,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:15,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2020-10-16 01:44:15,612 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:15,634 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-10-16 01:44:15,634 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:44:15,635 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 20 events. 0/20 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:44:15,635 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 01:44:15,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 20 transitions, 72 flow [2020-10-16 01:44:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 01:44:15,638 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8575063613231552 [2020-10-16 01:44:15,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 01:44:15,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 01:44:15,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:15,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 01:44:15,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:15,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:15,643 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:15,643 INFO L185 Difference]: Start difference. First operand has 35 places, 20 transitions, 66 flow. Second operand 3 states and 337 transitions. [2020-10-16 01:44:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 20 transitions, 72 flow [2020-10-16 01:44:15,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 58 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 01:44:15,645 INFO L241 Difference]: Finished difference. Result has 33 places, 20 transitions, 60 flow [2020-10-16 01:44:15,645 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2020-10-16 01:44:15,646 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2020-10-16 01:44:15,646 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 60 flow [2020-10-16 01:44:15,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:15,646 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:15,646 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:15,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:44:15,647 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:15,647 INFO L82 PathProgramCache]: Analyzing trace with hash 700703623, now seen corresponding path program 1 times [2020-10-16 01:44:15,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:15,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427638018] [2020-10-16 01:44:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:15,762 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 01:44:15,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427638018] [2020-10-16 01:44:15,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:15,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:15,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842828781] [2020-10-16 01:44:15,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:15,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:15,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:15,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:15,769 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 01:44:15,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 60 flow. Second operand 4 states. [2020-10-16 01:44:15,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:15,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 01:44:15,771 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:15,821 INFO L129 PetriNetUnfolder]: 5/40 cut-off events. [2020-10-16 01:44:15,822 INFO L130 PetriNetUnfolder]: For 22/29 co-relation queries the response was YES. [2020-10-16 01:44:15,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 40 events. 5/40 cut-off events. For 22/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 2 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2020-10-16 01:44:15,825 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 4 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 01:44:15,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 85 flow [2020-10-16 01:44:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2020-10-16 01:44:15,828 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8206106870229007 [2020-10-16 01:44:15,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2020-10-16 01:44:15,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2020-10-16 01:44:15,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:15,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2020-10-16 01:44:15,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:15,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:15,833 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:15,833 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 60 flow. Second operand 4 states and 430 transitions. [2020-10-16 01:44:15,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 85 flow [2020-10-16 01:44:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:15,835 INFO L241 Difference]: Finished difference. Result has 36 places, 20 transitions, 70 flow [2020-10-16 01:44:15,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2020-10-16 01:44:15,836 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2020-10-16 01:44:15,836 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 70 flow [2020-10-16 01:44:15,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:15,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:15,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:15,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:44:15,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash 475869839, now seen corresponding path program 1 times [2020-10-16 01:44:15,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:15,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286156527] [2020-10-16 01:44:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:15,964 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 01:44:15,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286156527] [2020-10-16 01:44:15,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:15,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:15,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010687649] [2020-10-16 01:44:15,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:15,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:15,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:15,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:15,969 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 01:44:15,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:44:15,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:15,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 01:44:15,970 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:16,073 INFO L129 PetriNetUnfolder]: 90/165 cut-off events. [2020-10-16 01:44:16,075 INFO L130 PetriNetUnfolder]: For 298/311 co-relation queries the response was YES. [2020-10-16 01:44:16,076 INFO L80 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 165 events. 90/165 cut-off events. For 298/311 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 648 event pairs, 46 based on Foata normal form. 18/177 useless extension candidates. Maximal degree in co-relation 387. Up to 119 conditions per place. [2020-10-16 01:44:16,078 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 5 changer transitions 9/33 dead transitions. [2020-10-16 01:44:16,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 136 flow [2020-10-16 01:44:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:44:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:44:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2020-10-16 01:44:16,082 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8045801526717558 [2020-10-16 01:44:16,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2020-10-16 01:44:16,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2020-10-16 01:44:16,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:16,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2020-10-16 01:44:16,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:44:16,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:44:16,088 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:44:16,088 INFO L185 Difference]: Start difference. First operand has 36 places, 20 transitions, 70 flow. Second operand 5 states and 527 transitions. [2020-10-16 01:44:16,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 136 flow [2020-10-16 01:44:16,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 124 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:16,091 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 103 flow [2020-10-16 01:44:16,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 01:44:16,091 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2020-10-16 01:44:16,091 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 103 flow [2020-10-16 01:44:16,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:16,092 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:16,092 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:16,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:44:16,092 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1701470509, now seen corresponding path program 1 times [2020-10-16 01:44:16,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:16,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65910258] [2020-10-16 01:44:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:16,156 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 01:44:16,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65910258] [2020-10-16 01:44:16,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:16,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:16,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211876790] [2020-10-16 01:44:16,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:44:16,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:16,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:44:16,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:44:16,159 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 01:44:16,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 103 flow. Second operand 5 states. [2020-10-16 01:44:16,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:16,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 01:44:16,160 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:16,230 INFO L129 PetriNetUnfolder]: 66/132 cut-off events. [2020-10-16 01:44:16,231 INFO L130 PetriNetUnfolder]: For 234/287 co-relation queries the response was YES. [2020-10-16 01:44:16,232 INFO L80 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 132 events. 66/132 cut-off events. For 234/287 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 471 event pairs, 14 based on Foata normal form. 24/153 useless extension candidates. Maximal degree in co-relation 501. Up to 108 conditions per place. [2020-10-16 01:44:16,239 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 9 changer transitions 9/37 dead transitions. [2020-10-16 01:44:16,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 227 flow [2020-10-16 01:44:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:44:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:44:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 632 transitions. [2020-10-16 01:44:16,242 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8040712468193384 [2020-10-16 01:44:16,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 632 transitions. [2020-10-16 01:44:16,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 632 transitions. [2020-10-16 01:44:16,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:16,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 632 transitions. [2020-10-16 01:44:16,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:44:16,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:44:16,248 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:44:16,248 INFO L185 Difference]: Start difference. First operand has 39 places, 24 transitions, 103 flow. Second operand 6 states and 632 transitions. [2020-10-16 01:44:16,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 227 flow [2020-10-16 01:44:16,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 220 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:16,251 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 168 flow [2020-10-16 01:44:16,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2020-10-16 01:44:16,252 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2020-10-16 01:44:16,252 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 168 flow [2020-10-16 01:44:16,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:44:16,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:16,253 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:16,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:44:16,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1720867716, now seen corresponding path program 1 times [2020-10-16 01:44:16,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:16,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171562334] [2020-10-16 01:44:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:16,368 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 01:44:16,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171562334] [2020-10-16 01:44:16,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:16,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:44:16,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404242497] [2020-10-16 01:44:16,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:44:16,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:16,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:44:16,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:44:16,375 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 01:44:16,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 168 flow. Second operand 6 states. [2020-10-16 01:44:16,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:16,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 01:44:16,375 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:16,473 INFO L129 PetriNetUnfolder]: 36/86 cut-off events. [2020-10-16 01:44:16,474 INFO L130 PetriNetUnfolder]: For 286/341 co-relation queries the response was YES. [2020-10-16 01:44:16,474 INFO L80 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 86 events. 36/86 cut-off events. For 286/341 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 249 event pairs, 2 based on Foata normal form. 27/111 useless extension candidates. Maximal degree in co-relation 429. Up to 68 conditions per place. [2020-10-16 01:44:16,475 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 13 changer transitions 9/41 dead transitions. [2020-10-16 01:44:16,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 350 flow [2020-10-16 01:44:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:44:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:44:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 737 transitions. [2020-10-16 01:44:16,478 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8037077426390403 [2020-10-16 01:44:16,479 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 737 transitions. [2020-10-16 01:44:16,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 737 transitions. [2020-10-16 01:44:16,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:16,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 737 transitions. [2020-10-16 01:44:16,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:44:16,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:44:16,483 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:44:16,483 INFO L185 Difference]: Start difference. First operand has 43 places, 28 transitions, 168 flow. Second operand 7 states and 737 transitions. [2020-10-16 01:44:16,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 350 flow [2020-10-16 01:44:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 288 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:16,488 INFO L241 Difference]: Finished difference. Result has 46 places, 32 transitions, 218 flow [2020-10-16 01:44:16,488 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2020-10-16 01:44:16,488 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2020-10-16 01:44:16,488 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 218 flow [2020-10-16 01:44:16,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:44:16,488 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:16,489 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:16,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:44:16,489 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1302176280, now seen corresponding path program 1 times [2020-10-16 01:44:16,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:16,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168768488] [2020-10-16 01:44:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:16,519 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 01:44:16,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168768488] [2020-10-16 01:44:16,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:16,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:16,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070417711] [2020-10-16 01:44:16,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:16,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:16,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:16,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:16,522 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 01:44:16,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 218 flow. Second operand 4 states. [2020-10-16 01:44:16,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:16,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 01:44:16,523 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:16,558 INFO L129 PetriNetUnfolder]: 51/122 cut-off events. [2020-10-16 01:44:16,559 INFO L130 PetriNetUnfolder]: For 449/517 co-relation queries the response was YES. [2020-10-16 01:44:16,560 INFO L80 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 122 events. 51/122 cut-off events. For 449/517 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 440 event pairs, 3 based on Foata normal form. 13/126 useless extension candidates. Maximal degree in co-relation 531. Up to 88 conditions per place. [2020-10-16 01:44:16,561 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 5 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2020-10-16 01:44:16,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 237 flow [2020-10-16 01:44:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2020-10-16 01:44:16,563 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.816793893129771 [2020-10-16 01:44:16,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2020-10-16 01:44:16,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2020-10-16 01:44:16,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:16,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2020-10-16 01:44:16,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:16,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:16,566 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:16,567 INFO L185 Difference]: Start difference. First operand has 46 places, 32 transitions, 218 flow. Second operand 4 states and 428 transitions. [2020-10-16 01:44:16,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 237 flow [2020-10-16 01:44:16,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 183 flow, removed 18 selfloop flow, removed 5 redundant places. [2020-10-16 01:44:16,571 INFO L241 Difference]: Finished difference. Result has 44 places, 33 transitions, 177 flow [2020-10-16 01:44:16,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2020-10-16 01:44:16,571 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2020-10-16 01:44:16,571 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 177 flow [2020-10-16 01:44:16,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:16,572 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:16,572 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:16,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:44:16,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash -795049348, now seen corresponding path program 2 times [2020-10-16 01:44:16,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:16,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821780073] [2020-10-16 01:44:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:16,655 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 01:44:16,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821780073] [2020-10-16 01:44:16,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:16,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:44:16,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063969333] [2020-10-16 01:44:16,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:44:16,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:16,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:44:16,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:44:16,658 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2020-10-16 01:44:16,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 177 flow. Second operand 7 states. [2020-10-16 01:44:16,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:16,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2020-10-16 01:44:16,659 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:16,761 INFO L129 PetriNetUnfolder]: 40/100 cut-off events. [2020-10-16 01:44:16,761 INFO L130 PetriNetUnfolder]: For 229/360 co-relation queries the response was YES. [2020-10-16 01:44:16,761 INFO L80 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 100 events. 40/100 cut-off events. For 229/360 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 327 event pairs, 0 based on Foata normal form. 47/140 useless extension candidates. Maximal degree in co-relation 381. Up to 51 conditions per place. [2020-10-16 01:44:16,762 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 2 selfloop transitions, 17 changer transitions 6/38 dead transitions. [2020-10-16 01:44:16,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 273 flow [2020-10-16 01:44:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 01:44:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 01:44:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 834 transitions. [2020-10-16 01:44:16,766 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7958015267175572 [2020-10-16 01:44:16,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 834 transitions. [2020-10-16 01:44:16,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 834 transitions. [2020-10-16 01:44:16,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:16,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 834 transitions. [2020-10-16 01:44:16,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 01:44:16,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 01:44:16,771 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 01:44:16,771 INFO L185 Difference]: Start difference. First operand has 44 places, 33 transitions, 177 flow. Second operand 8 states and 834 transitions. [2020-10-16 01:44:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 273 flow [2020-10-16 01:44:16,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 256 flow, removed 8 selfloop flow, removed 1 redundant places. [2020-10-16 01:44:16,774 INFO L241 Difference]: Finished difference. Result has 53 places, 32 transitions, 210 flow [2020-10-16 01:44:16,774 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2020-10-16 01:44:16,775 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2020-10-16 01:44:16,775 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 210 flow [2020-10-16 01:44:16,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:44:16,775 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:16,775 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:16,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:44:16,776 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:16,776 INFO L82 PathProgramCache]: Analyzing trace with hash 411071804, now seen corresponding path program 1 times [2020-10-16 01:44:16,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055593388] [2020-10-16 01:44:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:16,810 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 01:44:16,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055593388] [2020-10-16 01:44:16,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:16,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:16,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815585194] [2020-10-16 01:44:16,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:16,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:16,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:16,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:16,813 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2020-10-16 01:44:16,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 210 flow. Second operand 4 states. [2020-10-16 01:44:16,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:16,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2020-10-16 01:44:16,814 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:16,838 INFO L129 PetriNetUnfolder]: 32/85 cut-off events. [2020-10-16 01:44:16,838 INFO L130 PetriNetUnfolder]: For 162/188 co-relation queries the response was YES. [2020-10-16 01:44:16,839 INFO L80 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 85 events. 32/85 cut-off events. For 162/188 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 269 event pairs, 0 based on Foata normal form. 3/80 useless extension candidates. Maximal degree in co-relation 293. Up to 34 conditions per place. [2020-10-16 01:44:16,839 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2020-10-16 01:44:16,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 33 transitions, 214 flow [2020-10-16 01:44:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2020-10-16 01:44:16,842 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8148854961832062 [2020-10-16 01:44:16,842 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2020-10-16 01:44:16,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2020-10-16 01:44:16,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:16,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2020-10-16 01:44:16,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:16,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:16,845 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:16,845 INFO L185 Difference]: Start difference. First operand has 53 places, 32 transitions, 210 flow. Second operand 4 states and 427 transitions. [2020-10-16 01:44:16,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 33 transitions, 214 flow [2020-10-16 01:44:16,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 159 flow, removed 12 selfloop flow, removed 6 redundant places. [2020-10-16 01:44:16,847 INFO L241 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2020-10-16 01:44:16,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2020-10-16 01:44:16,848 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2020-10-16 01:44:16,848 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2020-10-16 01:44:16,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:16,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:44:16,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:16 BasicIcfg [2020-10-16 01:44:16,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:44:16,855 INFO L168 Benchmark]: Toolchain (without parser) took 4930.04 ms. Allocated memory was 257.9 MB in the beginning and 428.9 MB in the end (delta: 170.9 MB). Free memory was 213.7 MB in the beginning and 359.0 MB in the end (delta: -145.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:16,856 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 257.9 MB. Free memory is still 234.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:44:16,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.12 ms. Allocated memory was 257.9 MB in the beginning and 329.3 MB in the end (delta: 71.3 MB). Free memory was 213.7 MB in the beginning and 280.2 MB in the end (delta: -66.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:16,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.16 ms. Allocated memory is still 329.3 MB. Free memory was 280.2 MB in the beginning and 277.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:16,858 INFO L168 Benchmark]: Boogie Preprocessor took 26.75 ms. Allocated memory is still 329.3 MB. Free memory was 277.6 MB in the beginning and 275.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:16,859 INFO L168 Benchmark]: RCFGBuilder took 490.87 ms. Allocated memory is still 329.3 MB. Free memory was 275.1 MB in the beginning and 250.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:16,860 INFO L168 Benchmark]: TraceAbstraction took 3654.08 ms. Allocated memory was 329.3 MB in the beginning and 428.9 MB in the end (delta: 99.6 MB). Free memory was 250.7 MB in the beginning and 359.0 MB in the end (delta: -108.3 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:44:16,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 257.9 MB. Free memory is still 234.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 687.12 ms. Allocated memory was 257.9 MB in the beginning and 329.3 MB in the end (delta: 71.3 MB). Free memory was 213.7 MB in the beginning and 280.2 MB in the end (delta: -66.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 62.16 ms. Allocated memory is still 329.3 MB. Free memory was 280.2 MB in the beginning and 277.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.75 ms. Allocated memory is still 329.3 MB. Free memory was 277.6 MB in the beginning and 275.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 490.87 ms. Allocated memory is still 329.3 MB. Free memory was 275.1 MB in the beginning and 250.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3654.08 ms. Allocated memory was 329.3 MB in the beginning and 428.9 MB in the end (delta: 99.6 MB). Free memory was 250.7 MB in the beginning and 359.0 MB in the end (delta: -108.3 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 843 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 90 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 77 PlacesBefore, 33 PlacesAfterwards, 65 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 2240 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 5 procedures, 81 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: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 33 SDtfs, 28 SDslu, 23 SDs, 0 SdLazy, 199 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred 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, 0.6s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 5821 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...