/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:36:14,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:36:14,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:36:14,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:36:14,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:36:14,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:36:14,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:36:14,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:36:14,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:36:14,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:36:14,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:36:14,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:36:14,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:36:14,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:36:14,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:36:14,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:36:14,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:36:14,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:36:14,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:36:14,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:36:14,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:36:14,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:36:14,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:36:14,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:36:14,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:36:14,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:36:14,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:36:14,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:36:14,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:36:14,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:36:14,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:36:14,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:36:14,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:36:14,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:36:14,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:36:14,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:36:14,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:36:14,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:36:14,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:36:14,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:36:14,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:36:14,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:36:14,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:36:14,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:36:14,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:36:14,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:36:14,374 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:36:14,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:36:14,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:36:14,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:36:14,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:36:14,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:36:14,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:36:14,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:36:14,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:36:14,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:36:14,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:36:14,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:36:14,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:36:14,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:36:14,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:36:14,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:36:14,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:36:14,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:36:14,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:36:14,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:36:14,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:36:14,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:36:14,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:36:14,380 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:36:14,380 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:36:14,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:36:14,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:36:14,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:36:14,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:36:14,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:36:14,692 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:36:14,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-10-11 18:36:14,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e2385e5d/f3d919d32c8d480c875e167186512e87/FLAG34cc0b731 [2020-10-11 18:36:15,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:36:15,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-10-11 18:36:15,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e2385e5d/f3d919d32c8d480c875e167186512e87/FLAG34cc0b731 [2020-10-11 18:36:15,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e2385e5d/f3d919d32c8d480c875e167186512e87 [2020-10-11 18:36:15,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:36:15,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:36:15,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:15,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:36:15,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:36:15,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4952b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15, skipping insertion in model container [2020-10-11 18:36:15,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:36:15,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:36:16,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:16,244 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:36:16,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:16,403 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:36:16,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16 WrapperNode [2020-10-11 18:36:16,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:16,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:16,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:36:16,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:36:16,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:16,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:36:16,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:36:16,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:36:16,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (1/1) ... [2020-10-11 18:36:16,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:36:16,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:36:16,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:36:16,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:36:16,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (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 [2020-10-11 18:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:36:16,593 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:36:16,593 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:36:16,593 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:36:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:36:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:36:16,595 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:36:16,930 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:36:16,930 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:36:16,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:16 BoogieIcfgContainer [2020-10-11 18:36:16,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:36:16,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:36:16,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:36:16,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:36:16,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:36:15" (1/3) ... [2020-10-11 18:36:16,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350f6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:16, skipping insertion in model container [2020-10-11 18:36:16,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:16" (2/3) ... [2020-10-11 18:36:16,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350f6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:16, skipping insertion in model container [2020-10-11 18:36:16,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:16" (3/3) ... [2020-10-11 18:36:16,942 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-10-11 18:36:16,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:36:16,963 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:36:16,965 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:36:16,999 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,000 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,000 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,000 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,004 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,004 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,004 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,005 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,005 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,005 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,016 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:17,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:36:17,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:36:17,066 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:36:17,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:36:17,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:36:17,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:36:17,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:36:17,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:36:17,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:36:17,082 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:36:17,127 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:36:17,128 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:17,133 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:36:17,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:36:17,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:36:17,158 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:36:17,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:17,159 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:17,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:17,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:17,168 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-11 18:36:17,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:17,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908503880] [2020-10-11 18:36:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:17,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908503880] [2020-10-11 18:36:17,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:17,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:17,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487113913] [2020-10-11 18:36:17,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:17,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:17,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:17,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:17,986 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:36:17,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:36:17,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:17,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:36:17,993 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:18,189 INFO L129 PetriNetUnfolder]: 11/90 cut-off events. [2020-10-11 18:36:18,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:18,190 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 90 events. 11/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 5 based on Foata normal form. 5/93 useless extension candidates. Maximal degree in co-relation 113. Up to 19 conditions per place. [2020-10-11 18:36:18,192 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 7 selfloop transitions, 2 changer transitions 14/68 dead transitions. [2020-10-11 18:36:18,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 189 flow [2020-10-11 18:36:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 557 transitions. [2020-10-11 18:36:18,213 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2020-10-11 18:36:18,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 557 transitions. [2020-10-11 18:36:18,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 557 transitions. [2020-10-11 18:36:18,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:18,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 557 transitions. [2020-10-11 18:36:18,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:18,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:18,236 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:18,238 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 557 transitions. [2020-10-11 18:36:18,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 189 flow [2020-10-11 18:36:18,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:36:18,249 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:36:18,252 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:36:18,253 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:36:18,253 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:36:18,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:18,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:18,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:18,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:36:18,255 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:18,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1607458751, now seen corresponding path program 1 times [2020-10-11 18:36:18,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:18,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376260741] [2020-10-11 18:36:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:18,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376260741] [2020-10-11 18:36:18,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:18,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:18,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013912120] [2020-10-11 18:36:18,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:18,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:18,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:18,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:18,578 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:36:18,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 6 states. [2020-10-11 18:36:18,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:18,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:36:18,579 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:18,703 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:36:18,703 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:36:18,704 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 69 events. 3/69 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2020-10-11 18:36:18,705 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:36:18,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 208 flow [2020-10-11 18:36:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:36:18,709 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:36:18,709 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:36:18,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:36:18,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:18,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:36:18,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:18,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:18,715 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:18,715 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:36:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 208 flow [2020-10-11 18:36:18,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:18,720 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-11 18:36:18,721 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:36:18,722 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:36:18,722 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-11 18:36:18,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:18,722 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:18,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:18,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:36:18,723 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -922453822, now seen corresponding path program 1 times [2020-10-11 18:36:18,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:18,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290548456] [2020-10-11 18:36:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:18,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290548456] [2020-10-11 18:36:18,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:18,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:18,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536212603] [2020-10-11 18:36:18,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:18,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:18,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:19,110 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:36:19,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 7 states. [2020-10-11 18:36:19,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:19,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:36:19,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:19,283 INFO L129 PetriNetUnfolder]: 4/75 cut-off events. [2020-10-11 18:36:19,283 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2020-10-11 18:36:19,284 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 75 events. 4/75 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2020-10-11 18:36:19,284 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 6 selfloop transitions, 4 changer transitions 12/66 dead transitions. [2020-10-11 18:36:19,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 233 flow [2020-10-11 18:36:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:36:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:36:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 604 transitions. [2020-10-11 18:36:19,287 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2020-10-11 18:36:19,288 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 604 transitions. [2020-10-11 18:36:19,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 604 transitions. [2020-10-11 18:36:19,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:19,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 604 transitions. [2020-10-11 18:36:19,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:36:19,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:36:19,292 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:36:19,292 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 10 states and 604 transitions. [2020-10-11 18:36:19,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 233 flow [2020-10-11 18:36:19,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 199 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:19,296 INFO L241 Difference]: Finished difference. Result has 80 places, 54 transitions, 152 flow [2020-10-11 18:36:19,297 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2020-10-11 18:36:19,297 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:36:19,297 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 152 flow [2020-10-11 18:36:19,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:19,297 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:19,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:19,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:36:19,298 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:19,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1183801899, now seen corresponding path program 1 times [2020-10-11 18:36:19,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:19,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857205235] [2020-10-11 18:36:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:19,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857205235] [2020-10-11 18:36:19,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:19,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:19,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351448424] [2020-10-11 18:36:19,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:19,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:19,613 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:36:19,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 152 flow. Second operand 6 states. [2020-10-11 18:36:19,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:19,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:36:19,614 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:19,720 INFO L129 PetriNetUnfolder]: 3/68 cut-off events. [2020-10-11 18:36:19,721 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2020-10-11 18:36:19,721 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 68 events. 3/68 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2020-10-11 18:36:19,722 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:36:19,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 64 transitions, 234 flow [2020-10-11 18:36:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 552 transitions. [2020-10-11 18:36:19,725 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8761904761904762 [2020-10-11 18:36:19,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 552 transitions. [2020-10-11 18:36:19,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 552 transitions. [2020-10-11 18:36:19,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:19,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 552 transitions. [2020-10-11 18:36:19,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:19,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:19,730 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:19,730 INFO L185 Difference]: Start difference. First operand has 80 places, 54 transitions, 152 flow. Second operand 9 states and 552 transitions. [2020-10-11 18:36:19,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 64 transitions, 234 flow [2020-10-11 18:36:19,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 188 flow, removed 18 selfloop flow, removed 10 redundant places. [2020-10-11 18:36:19,734 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 146 flow [2020-10-11 18:36:19,734 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-11 18:36:19,735 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:36:19,735 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 146 flow [2020-10-11 18:36:19,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:19,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:19,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:19,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:36:19,736 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:19,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:19,736 INFO L82 PathProgramCache]: Analyzing trace with hash -173861203, now seen corresponding path program 1 times [2020-10-11 18:36:19,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:19,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479553902] [2020-10-11 18:36:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:19,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479553902] [2020-10-11 18:36:19,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:19,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:19,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821793280] [2020-10-11 18:36:19,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:19,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:19,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:19,989 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:19,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 146 flow. Second operand 6 states. [2020-10-11 18:36:19,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:19,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:19,990 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:20,145 INFO L129 PetriNetUnfolder]: 91/283 cut-off events. [2020-10-11 18:36:20,145 INFO L130 PetriNetUnfolder]: For 46/49 co-relation queries the response was YES. [2020-10-11 18:36:20,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 283 events. 91/283 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1409 event pairs, 2 based on Foata normal form. 8/287 useless extension candidates. Maximal degree in co-relation 505. Up to 81 conditions per place. [2020-10-11 18:36:20,149 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 6 changer transitions 19/79 dead transitions. [2020-10-11 18:36:20,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 266 flow [2020-10-11 18:36:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2020-10-11 18:36:20,153 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2020-10-11 18:36:20,153 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2020-10-11 18:36:20,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2020-10-11 18:36:20,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:20,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2020-10-11 18:36:20,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:20,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:20,156 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:20,157 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 146 flow. Second operand 9 states and 550 transitions. [2020-10-11 18:36:20,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 266 flow [2020-10-11 18:36:20,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 250 flow, removed 6 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:20,161 INFO L241 Difference]: Finished difference. Result has 79 places, 57 transitions, 186 flow [2020-10-11 18:36:20,162 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2020-10-11 18:36:20,162 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:36:20,162 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 186 flow [2020-10-11 18:36:20,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:20,162 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:20,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:20,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:36:20,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1360421556, now seen corresponding path program 1 times [2020-10-11 18:36:20,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:20,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129930304] [2020-10-11 18:36:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:20,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129930304] [2020-10-11 18:36:20,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:20,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:20,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175807884] [2020-10-11 18:36:20,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:20,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:20,447 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:20,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 186 flow. Second operand 7 states. [2020-10-11 18:36:20,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:20,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:20,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:20,658 INFO L129 PetriNetUnfolder]: 52/187 cut-off events. [2020-10-11 18:36:20,659 INFO L130 PetriNetUnfolder]: For 291/301 co-relation queries the response was YES. [2020-10-11 18:36:20,660 INFO L80 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 187 events. 52/187 cut-off events. For 291/301 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 736 event pairs, 0 based on Foata normal form. 12/198 useless extension candidates. Maximal degree in co-relation 550. Up to 75 conditions per place. [2020-10-11 18:36:20,662 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 19/82 dead transitions. [2020-10-11 18:36:20,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 439 flow [2020-10-11 18:36:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:36:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:36:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2020-10-11 18:36:20,665 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2020-10-11 18:36:20,666 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2020-10-11 18:36:20,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2020-10-11 18:36:20,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:20,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2020-10-11 18:36:20,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:36:20,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:36:20,670 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:36:20,671 INFO L185 Difference]: Start difference. First operand has 79 places, 57 transitions, 186 flow. Second operand 10 states and 610 transitions. [2020-10-11 18:36:20,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 439 flow [2020-10-11 18:36:20,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 415 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:36:20,676 INFO L241 Difference]: Finished difference. Result has 85 places, 60 transitions, 254 flow [2020-10-11 18:36:20,677 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=254, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2020-10-11 18:36:20,677 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-11 18:36:20,677 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 254 flow [2020-10-11 18:36:20,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:20,677 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:20,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:20,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:36:20,678 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1872738817, now seen corresponding path program 1 times [2020-10-11 18:36:20,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:20,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249584030] [2020-10-11 18:36:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:20,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249584030] [2020-10-11 18:36:20,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:20,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:20,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468717899] [2020-10-11 18:36:20,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:20,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:20,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:20,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:21,010 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:21,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 254 flow. Second operand 7 states. [2020-10-11 18:36:21,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:21,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:21,011 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:21,115 INFO L129 PetriNetUnfolder]: 30/214 cut-off events. [2020-10-11 18:36:21,116 INFO L130 PetriNetUnfolder]: For 526/564 co-relation queries the response was YES. [2020-10-11 18:36:21,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 214 events. 30/214 cut-off events. For 526/564 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 960 event pairs, 6 based on Foata normal form. 9/217 useless extension candidates. Maximal degree in co-relation 614. Up to 56 conditions per place. [2020-10-11 18:36:21,118 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 8 selfloop transitions, 4 changer transitions 5/66 dead transitions. [2020-10-11 18:36:21,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 66 transitions, 307 flow [2020-10-11 18:36:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-11 18:36:21,121 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-11 18:36:21,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-11 18:36:21,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-11 18:36:21,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:21,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-11 18:36:21,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:21,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:21,124 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:21,124 INFO L185 Difference]: Start difference. First operand has 85 places, 60 transitions, 254 flow. Second operand 7 states and 417 transitions. [2020-10-11 18:36:21,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 66 transitions, 307 flow [2020-10-11 18:36:21,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 251 flow, removed 20 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:21,129 INFO L241 Difference]: Finished difference. Result has 82 places, 60 transitions, 218 flow [2020-10-11 18:36:21,129 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2020-10-11 18:36:21,129 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2020-10-11 18:36:21,130 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 218 flow [2020-10-11 18:36:21,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:21,130 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:21,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:21,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:36:21,130 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -894102075, now seen corresponding path program 2 times [2020-10-11 18:36:21,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:21,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031371626] [2020-10-11 18:36:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:21,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031371626] [2020-10-11 18:36:21,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:21,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:36:21,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716282168] [2020-10-11 18:36:21,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:36:21,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:21,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:36:21,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:36:21,310 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:21,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 218 flow. Second operand 8 states. [2020-10-11 18:36:21,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:21,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:21,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:21,488 INFO L129 PetriNetUnfolder]: 16/100 cut-off events. [2020-10-11 18:36:21,488 INFO L130 PetriNetUnfolder]: For 152/168 co-relation queries the response was YES. [2020-10-11 18:36:21,489 INFO L80 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 100 events. 16/100 cut-off events. For 152/168 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 0 based on Foata normal form. 12/111 useless extension candidates. Maximal degree in co-relation 262. Up to 27 conditions per place. [2020-10-11 18:36:21,489 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-11 18:36:21,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 363 flow [2020-10-11 18:36:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:36:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:36:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-11 18:36:21,492 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-11 18:36:21,493 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-11 18:36:21,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-11 18:36:21,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:21,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-11 18:36:21,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:36:21,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:36:21,498 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:36:21,499 INFO L185 Difference]: Start difference. First operand has 82 places, 60 transitions, 218 flow. Second operand 11 states and 658 transitions. [2020-10-11 18:36:21,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 363 flow [2020-10-11 18:36:21,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 317 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:21,503 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 230 flow [2020-10-11 18:36:21,503 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=230, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2020-10-11 18:36:21,503 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-11 18:36:21,504 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 230 flow [2020-10-11 18:36:21,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:36:21,504 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:21,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:21,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:36:21,504 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:21,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:21,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1530297956, now seen corresponding path program 1 times [2020-10-11 18:36:21,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:21,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062332456] [2020-10-11 18:36:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:21,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062332456] [2020-10-11 18:36:21,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:21,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:21,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768978843] [2020-10-11 18:36:21,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:21,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:21,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:21,926 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:21,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 230 flow. Second operand 7 states. [2020-10-11 18:36:21,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:21,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:21,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:22,001 INFO L129 PetriNetUnfolder]: 10/105 cut-off events. [2020-10-11 18:36:22,001 INFO L130 PetriNetUnfolder]: For 98/103 co-relation queries the response was YES. [2020-10-11 18:36:22,002 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 105 events. 10/105 cut-off events. For 98/103 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 0 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 214. Up to 21 conditions per place. [2020-10-11 18:36:22,003 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 10 selfloop transitions, 1 changer transitions 5/65 dead transitions. [2020-10-11 18:36:22,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 65 transitions, 272 flow [2020-10-11 18:36:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:36:22,005 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:36:22,006 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:36:22,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:36:22,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:22,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:36:22,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:22,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:22,010 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:22,010 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 230 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:36:22,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 65 transitions, 272 flow [2020-10-11 18:36:22,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 196 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-11 18:36:22,014 INFO L241 Difference]: Finished difference. Result has 78 places, 60 transitions, 167 flow [2020-10-11 18:36:22,015 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2020-10-11 18:36:22,015 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:36:22,015 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 167 flow [2020-10-11 18:36:22,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:22,016 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:22,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:22,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:36:22,016 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash -396943510, now seen corresponding path program 2 times [2020-10-11 18:36:22,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:22,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132032595] [2020-10-11 18:36:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:22,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132032595] [2020-10-11 18:36:22,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:22,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:22,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609646552] [2020-10-11 18:36:22,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:22,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:22,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:22,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:22,332 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:22,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 167 flow. Second operand 7 states. [2020-10-11 18:36:22,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:22,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:22,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:22,417 INFO L129 PetriNetUnfolder]: 7/91 cut-off events. [2020-10-11 18:36:22,418 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2020-10-11 18:36:22,420 INFO L80 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 91 events. 7/91 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 192 event pairs, 0 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 142. Up to 10 conditions per place. [2020-10-11 18:36:22,420 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-11 18:36:22,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 193 flow [2020-10-11 18:36:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:36:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:36:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2020-10-11 18:36:22,423 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8375 [2020-10-11 18:36:22,423 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 469 transitions. [2020-10-11 18:36:22,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 469 transitions. [2020-10-11 18:36:22,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:22,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 469 transitions. [2020-10-11 18:36:22,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:36:22,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:36:22,427 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:36:22,427 INFO L185 Difference]: Start difference. First operand has 78 places, 60 transitions, 167 flow. Second operand 8 states and 469 transitions. [2020-10-11 18:36:22,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 193 flow [2020-10-11 18:36:22,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 185 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:36:22,429 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:36:22,430 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:36:22,430 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:36:22,430 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:36:22,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:22,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:36:22,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:36:22 BasicIcfg [2020-10-11 18:36:22,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:36:22,446 INFO L168 Benchmark]: Toolchain (without parser) took 6845.29 ms. Allocated memory was 253.8 MB in the beginning and 413.7 MB in the end (delta: 159.9 MB). Free memory was 207.0 MB in the beginning and 263.3 MB in the end (delta: -56.3 MB). Peak memory consumption was 103.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,447 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 253.8 MB. Free memory was 229.3 MB in the beginning and 228.5 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.34 ms. Allocated memory was 253.8 MB in the beginning and 324.5 MB in the end (delta: 70.8 MB). Free memory was 207.0 MB in the beginning and 275.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.57 ms. Allocated memory is still 324.5 MB. Free memory was 275.5 MB in the beginning and 273.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,450 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 324.5 MB. Free memory was 273.8 MB in the beginning and 272.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,453 INFO L168 Benchmark]: RCFGBuilder took 407.58 ms. Allocated memory is still 324.5 MB. Free memory was 272.1 MB in the beginning and 249.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,455 INFO L168 Benchmark]: TraceAbstraction took 5502.40 ms. Allocated memory was 324.5 MB in the beginning and 413.7 MB in the end (delta: 89.1 MB). Free memory was 248.5 MB in the beginning and 263.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 74.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:22,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 253.8 MB. Free memory was 229.3 MB in the beginning and 228.5 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 811.34 ms. Allocated memory was 253.8 MB in the beginning and 324.5 MB in the end (delta: 70.8 MB). Free memory was 207.0 MB in the beginning and 275.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 90.57 ms. Allocated memory is still 324.5 MB. Free memory was 275.5 MB in the beginning and 273.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 324.5 MB. Free memory was 273.8 MB in the beginning and 272.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 407.58 ms. Allocated memory is still 324.5 MB. Free memory was 272.1 MB in the beginning and 249.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5502.40 ms. Allocated memory was 324.5 MB in the beginning and 413.7 MB in the end (delta: 89.1 MB). Free memory was 248.5 MB in the beginning and 263.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 74.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 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: 5.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 277 SDslu, 716 SDs, 0 SdLazy, 706 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=6, 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, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 50738 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...