/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:02:12,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:02:12,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:02:12,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:02:12,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:02:12,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:02:12,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:02:12,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:02:12,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:02:12,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:02:12,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:02:12,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:02:12,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:02:12,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:02:12,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:02:12,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:02:12,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:02:12,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:02:12,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:02:12,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:02:12,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:02:12,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:02:12,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:02:12,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:02:12,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:02:12,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:02:12,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:02:12,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:02:12,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:02:12,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:02:12,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:02:12,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:02:12,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:02:12,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:02:12,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:02:12,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:02:12,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:02:12,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:02:12,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:02:12,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:02:12,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:02:12,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:02:12,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:02:12,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:02:12,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:02:12,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:02:12,412 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:02:12,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:02:12,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:02:12,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:02:12,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:02:12,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:02:12,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:02:12,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:02:12,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:02:12,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:02:12,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:02:12,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:02:12,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:02:12,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:02:12,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:02:12,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:02:12,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:02:12,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:02:12,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:02:12,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:02:12,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:02:12,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:02:12,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:02:12,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:02:12,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:02:12,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:02:12,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:02:12,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:02:12,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:02:12,719 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:02:12,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 05:02:12,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eb429cf/fac7164eb87f4bf0acc20cd101cf8f1b/FLAG6d86b8ebe [2020-10-16 05:02:13,297 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:02:13,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 05:02:13,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eb429cf/fac7164eb87f4bf0acc20cd101cf8f1b/FLAG6d86b8ebe [2020-10-16 05:02:13,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eb429cf/fac7164eb87f4bf0acc20cd101cf8f1b [2020-10-16 05:02:13,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:02:13,594 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:02:13,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:13,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:02:13,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:02:13,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:13" (1/1) ... [2020-10-16 05:02:13,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d743a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:13, skipping insertion in model container [2020-10-16 05:02:13,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:13" (1/1) ... [2020-10-16 05:02:13,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:02:13,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:02:14,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:14,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:02:14,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:14,343 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:02:14,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14 WrapperNode [2020-10-16 05:02:14,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:14,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:14,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:02:14,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:02:14,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:14,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:02:14,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:02:14,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:02:14,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... [2020-10-16 05:02:14,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:02:14,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:02:14,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:02:14,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:02:14,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:02:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:02:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:02:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:02:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:02:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:02:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:02:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:02:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:02:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:02:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:02:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:02:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:02:14,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:02:14,500 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:02:14,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:02:14,832 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:02:14,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:14 BoogieIcfgContainer [2020-10-16 05:02:14,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:02:14,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:02:14,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:02:14,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:02:14,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:02:13" (1/3) ... [2020-10-16 05:02:14,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:14, skipping insertion in model container [2020-10-16 05:02:14,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:14" (2/3) ... [2020-10-16 05:02:14,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:14, skipping insertion in model container [2020-10-16 05:02:14,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:14" (3/3) ... [2020-10-16 05:02:14,843 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-16 05:02:14,860 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:02:14,869 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:02:14,871 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:02:14,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,906 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,906 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,929 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,930 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:14,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:02:14,970 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:02:14,971 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:02:14,971 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:02:14,971 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:02:14,971 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:02:14,971 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:02:14,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:02:14,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:02:14,985 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:02:15,032 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:02:15,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:15,037 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 51 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. [2020-10-16 05:02:15,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:02:15,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:15,046 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:02:15,048 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:15,051 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:15,052 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:15,072 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:02:15,072 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:15,073 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:02:15,075 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:02:16,502 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 05:02:16,502 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:02:16,505 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1461 [2020-10-16 05:02:16,514 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:02:16,514 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:16,514 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:16,515 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:16,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:16,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:16,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 05:02:16,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:16,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380277857] [2020-10-16 05:02:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:16,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380277857] [2020-10-16 05:02:16,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:16,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:02:16,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673329799] [2020-10-16 05:02:16,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:16,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:16,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:16,787 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2020-10-16 05:02:16,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:02:16,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:16,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2020-10-16 05:02:16,792 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:16,814 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:02:16,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:16,815 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:02:16,816 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:02:16,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:02:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:02:16,834 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 05:02:16,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:02:16,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:02:16,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:16,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:02:16,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:16,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:16,853 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:16,855 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:02:16,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:02:16,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:16,862 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:02:16,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:02:16,866 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:02:16,866 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:02:16,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:16,867 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:16,867 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:16,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:02:16,868 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash -981469511, now seen corresponding path program 1 times [2020-10-16 05:02:16,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:16,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503929969] [2020-10-16 05:02:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:16,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503929969] [2020-10-16 05:02:16,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:16,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:16,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928958450] [2020-10-16 05:02:16,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:16,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:16,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:16,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:16,987 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:02:16,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:02:16,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:16,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:02:16,988 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,055 INFO L129 PetriNetUnfolder]: 17/64 cut-off events. [2020-10-16 05:02:17,056 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-16 05:02:17,057 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 64 events. 17/64 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 222 event pairs, 3 based on Foata normal form. 8/71 useless extension candidates. Maximal degree in co-relation 120. Up to 24 conditions per place. [2020-10-16 05:02:17,057 INFO L132 encePairwiseOnDemand]: 107/112 looper letters, 6 selfloop transitions, 4 changer transitions 3/24 dead transitions. [2020-10-16 05:02:17,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 91 flow [2020-10-16 05:02:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2020-10-16 05:02:17,061 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7924107142857143 [2020-10-16 05:02:17,062 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2020-10-16 05:02:17,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2020-10-16 05:02:17,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2020-10-16 05:02:17,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:17,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:17,069 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:17,070 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 355 transitions. [2020-10-16 05:02:17,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 91 flow [2020-10-16 05:02:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:17,072 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 05:02:17,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 05:02:17,073 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:02:17,073 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 05:02:17,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:17,073 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,073 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:02:17,074 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,074 INFO L82 PathProgramCache]: Analyzing trace with hash -361647715, now seen corresponding path program 1 times [2020-10-16 05:02:17,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43550221] [2020-10-16 05:02:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43550221] [2020-10-16 05:02:17,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:17,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727601689] [2020-10-16 05:02:17,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:17,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:17,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:17,135 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:02:17,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:02:17,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:02:17,136 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,196 INFO L129 PetriNetUnfolder]: 8/52 cut-off events. [2020-10-16 05:02:17,196 INFO L130 PetriNetUnfolder]: For 55/61 co-relation queries the response was YES. [2020-10-16 05:02:17,197 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 52 events. 8/52 cut-off events. For 55/61 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 179 event pairs, 0 based on Foata normal form. 8/60 useless extension candidates. Maximal degree in co-relation 124. Up to 17 conditions per place. [2020-10-16 05:02:17,197 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 7 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2020-10-16 05:02:17,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 128 flow [2020-10-16 05:02:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:02:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:02:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2020-10-16 05:02:17,200 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7875 [2020-10-16 05:02:17,200 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2020-10-16 05:02:17,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2020-10-16 05:02:17,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2020-10-16 05:02:17,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:02:17,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:02:17,204 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:02:17,205 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 441 transitions. [2020-10-16 05:02:17,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 128 flow [2020-10-16 05:02:17,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 117 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:17,207 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2020-10-16 05:02:17,207 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2020-10-16 05:02:17,207 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:02:17,207 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 99 flow [2020-10-16 05:02:17,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:17,208 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,208 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:02:17,208 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,209 INFO L82 PathProgramCache]: Analyzing trace with hash 529044736, now seen corresponding path program 1 times [2020-10-16 05:02:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204279439] [2020-10-16 05:02:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204279439] [2020-10-16 05:02:17,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:02:17,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585284906] [2020-10-16 05:02:17,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:17,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:17,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:17,259 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 112 [2020-10-16 05:02:17,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 99 flow. Second operand 3 states. [2020-10-16 05:02:17,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 112 [2020-10-16 05:02:17,260 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,271 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2020-10-16 05:02:17,271 INFO L130 PetriNetUnfolder]: For 71/74 co-relation queries the response was YES. [2020-10-16 05:02:17,272 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 31 events. 2/31 cut-off events. For 71/74 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 3/34 useless extension candidates. Maximal degree in co-relation 72. Up to 10 conditions per place. [2020-10-16 05:02:17,272 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 2 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:02:17,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 21 transitions, 107 flow [2020-10-16 05:02:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 05:02:17,275 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2020-10-16 05:02:17,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 05:02:17,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 05:02:17,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 05:02:17,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:17,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:17,277 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:17,277 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 99 flow. Second operand 3 states and 286 transitions. [2020-10-16 05:02:17,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 21 transitions, 107 flow [2020-10-16 05:02:17,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 89 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:17,280 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 91 flow [2020-10-16 05:02:17,280 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 05:02:17,281 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:02:17,281 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 91 flow [2020-10-16 05:02:17,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:17,281 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,281 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:02:17,282 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash -779927318, now seen corresponding path program 1 times [2020-10-16 05:02:17,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207650048] [2020-10-16 05:02:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207650048] [2020-10-16 05:02:17,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:17,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213234504] [2020-10-16 05:02:17,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:17,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:17,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:17,372 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:02:17,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 91 flow. Second operand 4 states. [2020-10-16 05:02:17,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:02:17,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,431 INFO L129 PetriNetUnfolder]: 63/141 cut-off events. [2020-10-16 05:02:17,431 INFO L130 PetriNetUnfolder]: For 346/394 co-relation queries the response was YES. [2020-10-16 05:02:17,433 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 141 events. 63/141 cut-off events. For 346/394 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 610 event pairs, 21 based on Foata normal form. 22/154 useless extension candidates. Maximal degree in co-relation 344. Up to 92 conditions per place. [2020-10-16 05:02:17,434 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 6 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2020-10-16 05:02:17,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 145 flow [2020-10-16 05:02:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:02:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:02:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 05:02:17,437 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 05:02:17,437 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 05:02:17,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 05:02:17,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 05:02:17,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:02:17,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:02:17,441 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:02:17,441 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 91 flow. Second operand 5 states and 423 transitions. [2020-10-16 05:02:17,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 145 flow [2020-10-16 05:02:17,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 135 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:17,443 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2020-10-16 05:02:17,444 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2020-10-16 05:02:17,444 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:02:17,444 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2020-10-16 05:02:17,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:17,444 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,445 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:02:17,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1605670065, now seen corresponding path program 1 times [2020-10-16 05:02:17,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434306917] [2020-10-16 05:02:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434306917] [2020-10-16 05:02:17,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:17,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271073701] [2020-10-16 05:02:17,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:17,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:17,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:17,532 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:02:17,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand 4 states. [2020-10-16 05:02:17,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:02:17,533 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,601 INFO L129 PetriNetUnfolder]: 66/142 cut-off events. [2020-10-16 05:02:17,601 INFO L130 PetriNetUnfolder]: For 361/388 co-relation queries the response was YES. [2020-10-16 05:02:17,603 INFO L80 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 142 events. 66/142 cut-off events. For 361/388 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 574 event pairs, 25 based on Foata normal form. 16/148 useless extension candidates. Maximal degree in co-relation 451. Up to 101 conditions per place. [2020-10-16 05:02:17,605 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 6 selfloop transitions, 4 changer transitions 1/25 dead transitions. [2020-10-16 05:02:17,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 146 flow [2020-10-16 05:02:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 05:02:17,608 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7834821428571429 [2020-10-16 05:02:17,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 05:02:17,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 05:02:17,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 05:02:17,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:17,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:17,611 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:17,611 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 4 states and 351 transitions. [2020-10-16 05:02:17,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 146 flow [2020-10-16 05:02:17,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 138 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:17,619 INFO L241 Difference]: Finished difference. Result has 38 places, 24 transitions, 129 flow [2020-10-16 05:02:17,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2020-10-16 05:02:17,619 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:02:17,619 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 129 flow [2020-10-16 05:02:17,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:17,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,620 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:02:17,620 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1137845321, now seen corresponding path program 2 times [2020-10-16 05:02:17,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330077127] [2020-10-16 05:02:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330077127] [2020-10-16 05:02:17,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:17,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060589741] [2020-10-16 05:02:17,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:02:17,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:02:17,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:02:17,715 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:02:17,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 129 flow. Second operand 5 states. [2020-10-16 05:02:17,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:02:17,716 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,777 INFO L129 PetriNetUnfolder]: 38/110 cut-off events. [2020-10-16 05:02:17,778 INFO L130 PetriNetUnfolder]: For 479/572 co-relation queries the response was YES. [2020-10-16 05:02:17,779 INFO L80 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 110 events. 38/110 cut-off events. For 479/572 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 469 event pairs, 3 based on Foata normal form. 41/148 useless extension candidates. Maximal degree in co-relation 398. Up to 80 conditions per place. [2020-10-16 05:02:17,779 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 6 selfloop transitions, 7 changer transitions 7/34 dead transitions. [2020-10-16 05:02:17,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 227 flow [2020-10-16 05:02:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:02:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:02:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 05:02:17,782 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 05:02:17,782 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 05:02:17,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 05:02:17,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 05:02:17,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:02:17,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:02:17,786 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:02:17,786 INFO L185 Difference]: Start difference. First operand has 38 places, 24 transitions, 129 flow. Second operand 6 states and 507 transitions. [2020-10-16 05:02:17,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 227 flow [2020-10-16 05:02:17,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 217 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:17,789 INFO L241 Difference]: Finished difference. Result has 42 places, 27 transitions, 179 flow [2020-10-16 05:02:17,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2020-10-16 05:02:17,790 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 05:02:17,790 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 179 flow [2020-10-16 05:02:17,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:02:17,790 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,791 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:02:17,791 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash 913461771, now seen corresponding path program 1 times [2020-10-16 05:02:17,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726337829] [2020-10-16 05:02:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726337829] [2020-10-16 05:02:17,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:02:17,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208548626] [2020-10-16 05:02:17,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:02:17,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:02:17,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:02:17,847 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:02:17,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 179 flow. Second operand 6 states. [2020-10-16 05:02:17,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:02:17,848 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,907 INFO L129 PetriNetUnfolder]: 17/69 cut-off events. [2020-10-16 05:02:17,907 INFO L130 PetriNetUnfolder]: For 383/454 co-relation queries the response was YES. [2020-10-16 05:02:17,907 INFO L80 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 69 events. 17/69 cut-off events. For 383/454 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 229 event pairs, 0 based on Foata normal form. 37/104 useless extension candidates. Maximal degree in co-relation 297. Up to 47 conditions per place. [2020-10-16 05:02:17,908 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 3 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2020-10-16 05:02:17,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 245 flow [2020-10-16 05:02:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:02:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:02:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 05:02:17,911 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 05:02:17,911 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 05:02:17,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 05:02:17,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 05:02:17,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:02:17,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:02:17,915 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:02:17,915 INFO L185 Difference]: Start difference. First operand has 42 places, 27 transitions, 179 flow. Second operand 7 states and 585 transitions. [2020-10-16 05:02:17,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 245 flow [2020-10-16 05:02:17,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 205 flow, removed 16 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:17,919 INFO L241 Difference]: Finished difference. Result has 45 places, 26 transitions, 177 flow [2020-10-16 05:02:17,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=45, PETRI_TRANSITIONS=26} [2020-10-16 05:02:17,920 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 05:02:17,920 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 177 flow [2020-10-16 05:02:17,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:02:17,920 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,920 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:02:17,921 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash 263191936, now seen corresponding path program 1 times [2020-10-16 05:02:17,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219732164] [2020-10-16 05:02:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:17,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219732164] [2020-10-16 05:02:17,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:17,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:17,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30116968] [2020-10-16 05:02:17,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:17,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:17,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:17,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:17,955 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:02:17,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 177 flow. Second operand 4 states. [2020-10-16 05:02:17,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:17,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:02:17,956 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:17,979 INFO L129 PetriNetUnfolder]: 17/72 cut-off events. [2020-10-16 05:02:17,979 INFO L130 PetriNetUnfolder]: For 203/219 co-relation queries the response was YES. [2020-10-16 05:02:17,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 72 events. 17/72 cut-off events. For 203/219 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 244 event pairs, 0 based on Foata normal form. 3/71 useless extension candidates. Maximal degree in co-relation 243. Up to 35 conditions per place. [2020-10-16 05:02:17,980 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 1 changer transitions 3/26 dead transitions. [2020-10-16 05:02:17,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 177 flow [2020-10-16 05:02:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 05:02:17,983 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2020-10-16 05:02:17,983 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 05:02:17,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 05:02:17,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:17,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 05:02:17,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:17,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:17,986 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:17,986 INFO L185 Difference]: Start difference. First operand has 45 places, 26 transitions, 177 flow. Second operand 4 states and 362 transitions. [2020-10-16 05:02:17,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 177 flow [2020-10-16 05:02:17,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 133 flow, removed 14 selfloop flow, removed 7 redundant places. [2020-10-16 05:02:17,988 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 116 flow [2020-10-16 05:02:17,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:02:17,989 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:02:17,989 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 116 flow [2020-10-16 05:02:17,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:17,989 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:17,989 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:17,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:02:17,990 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:17,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1513083704, now seen corresponding path program 2 times [2020-10-16 05:02:17,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:17,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223829413] [2020-10-16 05:02:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:18,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223829413] [2020-10-16 05:02:18,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:18,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:18,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893823343] [2020-10-16 05:02:18,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:18,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:18,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:18,019 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:02:18,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 116 flow. Second operand 3 states. [2020-10-16 05:02:18,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:18,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:02:18,020 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:18,031 INFO L129 PetriNetUnfolder]: 6/33 cut-off events. [2020-10-16 05:02:18,031 INFO L130 PetriNetUnfolder]: For 36/41 co-relation queries the response was YES. [2020-10-16 05:02:18,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 33 events. 6/33 cut-off events. For 36/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 3/34 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-10-16 05:02:18,032 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 05:02:18,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 119 flow [2020-10-16 05:02:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:02:18,034 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8125 [2020-10-16 05:02:18,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:02:18,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:02:18,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:18,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:02:18,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:18,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:18,036 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:18,036 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 116 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:02:18,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 119 flow [2020-10-16 05:02:18,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 22 transitions, 110 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:18,037 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2020-10-16 05:02:18,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2020-10-16 05:02:18,038 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:02:18,038 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2020-10-16 05:02:18,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:18,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:02:18,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:02:18 BasicIcfg [2020-10-16 05:02:18,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:02:18,045 INFO L168 Benchmark]: Toolchain (without parser) took 4450.99 ms. Allocated memory was 251.7 MB in the beginning and 377.5 MB in the end (delta: 125.8 MB). Free memory was 207.0 MB in the beginning and 202.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 130.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:18,046 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:18,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.31 ms. Allocated memory was 251.7 MB in the beginning and 321.4 MB in the end (delta: 69.7 MB). Free memory was 207.0 MB in the beginning and 274.2 MB in the end (delta: -67.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:18,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 321.4 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:18,048 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 321.4 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:18,048 INFO L168 Benchmark]: RCFGBuilder took 412.80 ms. Allocated memory is still 321.4 MB. Free memory was 271.7 MB in the beginning and 249.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:18,049 INFO L168 Benchmark]: TraceAbstraction took 3206.86 ms. Allocated memory was 321.4 MB in the beginning and 377.5 MB in the end (delta: 56.1 MB). Free memory was 247.4 MB in the beginning and 202.8 MB in the end (delta: 44.5 MB). Peak memory consumption was 100.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:18,053 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 749.31 ms. Allocated memory was 251.7 MB in the beginning and 321.4 MB in the end (delta: 69.7 MB). Free memory was 207.0 MB in the beginning and 274.2 MB in the end (delta: -67.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 321.4 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 321.4 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 412.80 ms. Allocated memory is still 321.4 MB. Free memory was 271.7 MB in the beginning and 249.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3206.86 ms. Allocated memory was 321.4 MB in the beginning and 377.5 MB in the end (delta: 56.1 MB). Free memory was 247.4 MB in the beginning and 202.8 MB in the end (delta: 44.5 MB). Peak memory consumption was 100.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 608 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 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: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 40 SDtfs, 24 SDslu, 21 SDs, 0 SdLazy, 130 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 3757 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...