/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:43:23,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:43:23,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:43:23,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:43:23,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:43:23,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:43:23,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:43:23,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:43:23,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:43:23,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:43:23,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:43:23,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:43:23,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:43:23,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:43:23,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:43:23,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:43:23,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:43:23,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:43:23,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:43:23,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:43:23,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:43:23,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:43:23,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:43:23,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:43:23,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:43:23,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:43:23,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:43:23,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:43:23,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:43:23,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:43:23,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:43:23,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:43:23,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:43:23,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:43:23,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:43:23,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:43:23,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:43:23,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:43:23,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:43:23,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:43:23,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:43:23,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:43:23,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:43:23,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:43:23,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:43:23,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:43:23,448 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:43:23,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:43:23,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:43:23,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:43:23,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:43:23,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:43:23,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:43:23,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:43:23,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:43:23,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:43:23,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:43:23,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:43:23,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:43:23,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:43:23,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:43:23,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:43:23,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:43:23,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:43:23,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:43:23,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:43:23,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:43:23,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:43:23,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:43:23,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:43:23,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:43:23,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:43:23,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:43:23,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:43:23,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:43:23,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:43:23,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2020-10-16 01:43:23,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae99a7314/7a086a273dba46b59d38001228613121/FLAG106a64087 [2020-10-16 01:43:24,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:43:24,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2020-10-16 01:43:24,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae99a7314/7a086a273dba46b59d38001228613121/FLAG106a64087 [2020-10-16 01:43:24,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae99a7314/7a086a273dba46b59d38001228613121 [2020-10-16 01:43:24,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:43:24,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:43:24,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:43:24,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:43:24,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:43:24,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:43:24" (1/1) ... [2020-10-16 01:43:24,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49dd20ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:24, skipping insertion in model container [2020-10-16 01:43:24,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:43:24" (1/1) ... [2020-10-16 01:43:24,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:43:24,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:43:25,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:43:25,202 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:43:25,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:43:25,317 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:43:25,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25 WrapperNode [2020-10-16 01:43:25,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:43:25,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:43:25,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:43:25,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:43:25,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:43:25,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:43:25,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:43:25,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:43:25,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... [2020-10-16 01:43:25,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:43:25,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:43:25,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:43:25,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:43:25,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:43:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:43:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:43:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:43:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:43:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:43:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:43:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:43:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:43:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:43:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:43:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:43:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:43:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:43:25,459 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:43:25,792 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:43:25,792 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:43:25,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:43:25 BoogieIcfgContainer [2020-10-16 01:43:25,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:43:25,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:43:25,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:43:25,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:43:25,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:43:24" (1/3) ... [2020-10-16 01:43:25,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230fa6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:43:25, skipping insertion in model container [2020-10-16 01:43:25,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:25" (2/3) ... [2020-10-16 01:43:25,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230fa6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:43:25, skipping insertion in model container [2020-10-16 01:43:25,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:43:25" (3/3) ... [2020-10-16 01:43:25,803 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2020-10-16 01:43:25,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:43:25,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:43:25,821 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:43:25,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,866 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:25,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:43:25,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:43:25,906 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:43:25,906 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:43:25,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:43:25,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:43:25,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:43:25,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:43:25,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:43:25,919 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 01:43:25,964 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 01:43:25,965 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:25,972 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:43:25,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 01:43:25,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-16 01:43:25,981 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:43:25,984 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 01:43:25,987 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 01:43:25,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2020-10-16 01:43:26,008 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2020-10-16 01:43:26,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:26,009 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:43:26,011 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:43:27,460 INFO L132 LiptonReduction]: Checked pairs total: 1947 [2020-10-16 01:43:27,460 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 01:43:27,463 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1484 [2020-10-16 01:43:27,472 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 01:43:27,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:27,472 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:27,473 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:27,474 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:27,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1311630867, now seen corresponding path program 1 times [2020-10-16 01:43:27,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:27,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104070586] [2020-10-16 01:43:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:27,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104070586] [2020-10-16 01:43:27,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:27,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:43:27,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92979088] [2020-10-16 01:43:27,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:43:27,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:27,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:43:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:43:27,742 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2020-10-16 01:43:27,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:43:27,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:27,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2020-10-16 01:43:27,746 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:27,767 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:43:27,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:27,768 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 01:43:27,769 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:43:27,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:43:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:43:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:43:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 01:43:27,785 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8463768115942029 [2020-10-16 01:43:27,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 01:43:27,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 01:43:27,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 01:43:27,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:43:27,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:43:27,803 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:43:27,805 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 292 transitions. [2020-10-16 01:43:27,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:43:27,809 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 01:43:27,811 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:43:27,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, 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 01:43:27,815 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:43:27,815 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:43:27,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:43:27,816 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:27,816 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:27,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:43:27,817 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:27,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2005851868, now seen corresponding path program 1 times [2020-10-16 01:43:27,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:27,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238781957] [2020-10-16 01:43:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:27,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238781957] [2020-10-16 01:43:27,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:27,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:43:27,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299419491] [2020-10-16 01:43:27,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:27,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:27,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:27,922 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2020-10-16 01:43:27,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:43:27,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:27,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2020-10-16 01:43:27,923 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:27,975 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 01:43:27,975 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 01:43:27,976 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:43:27,976 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 01:43:27,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 63 flow [2020-10-16 01:43:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2020-10-16 01:43:27,980 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8152173913043478 [2020-10-16 01:43:27,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2020-10-16 01:43:27,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2020-10-16 01:43:27,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:27,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2020-10-16 01:43:27,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:27,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:27,985 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:27,986 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 375 transitions. [2020-10-16 01:43:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 63 flow [2020-10-16 01:43:27,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:43:27,989 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 01:43:27,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:43:27,990 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:43:27,990 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 01:43:27,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:27,991 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:27,991 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:27,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:43:27,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash 816800673, now seen corresponding path program 1 times [2020-10-16 01:43:27,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:27,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215781861] [2020-10-16 01:43:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:28,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215781861] [2020-10-16 01:43:28,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:28,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:43:28,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354773220] [2020-10-16 01:43:28,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:28,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:28,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:28,093 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2020-10-16 01:43:28,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 01:43:28,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:28,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2020-10-16 01:43:28,094 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:28,137 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:43:28,137 INFO L130 PetriNetUnfolder]: For 76/81 co-relation queries the response was YES. [2020-10-16 01:43:28,138 INFO L80 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 69 events. 28/69 cut-off events. For 76/81 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 213 event pairs, 4 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 154. Up to 33 conditions per place. [2020-10-16 01:43:28,139 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 7 selfloop transitions, 5 changer transitions 1/24 dead transitions. [2020-10-16 01:43:28,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 98 flow [2020-10-16 01:43:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 01:43:28,142 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7630434782608696 [2020-10-16 01:43:28,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 01:43:28,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 01:43:28,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:28,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 01:43:28,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:28,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:28,145 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:28,145 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 351 transitions. [2020-10-16 01:43:28,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 98 flow [2020-10-16 01:43:28,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 86 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:43:28,148 INFO L241 Difference]: Finished difference. Result has 31 places, 20 transitions, 80 flow [2020-10-16 01:43:28,148 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2020-10-16 01:43:28,148 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:43:28,148 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 80 flow [2020-10-16 01:43:28,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:28,149 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:28,149 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:28,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:43:28,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:28,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1810504924, now seen corresponding path program 1 times [2020-10-16 01:43:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102716321] [2020-10-16 01:43:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:28,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102716321] [2020-10-16 01:43:28,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:28,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:28,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495269515] [2020-10-16 01:43:28,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:43:28,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:28,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:43:28,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:43:28,218 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2020-10-16 01:43:28,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 80 flow. Second operand 5 states. [2020-10-16 01:43:28,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:28,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2020-10-16 01:43:28,221 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:28,276 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:43:28,276 INFO L130 PetriNetUnfolder]: For 48/81 co-relation queries the response was YES. [2020-10-16 01:43:28,277 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 50 events. 16/50 cut-off events. For 48/81 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 129 event pairs, 0 based on Foata normal form. 13/60 useless extension candidates. Maximal degree in co-relation 148. Up to 32 conditions per place. [2020-10-16 01:43:28,277 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 7 selfloop transitions, 8 changer transitions 1/27 dead transitions. [2020-10-16 01:43:28,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 141 flow [2020-10-16 01:43:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:43:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:43:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2020-10-16 01:43:28,280 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7617391304347826 [2020-10-16 01:43:28,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2020-10-16 01:43:28,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2020-10-16 01:43:28,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:28,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2020-10-16 01:43:28,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:43:28,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:43:28,284 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:43:28,284 INFO L185 Difference]: Start difference. First operand has 31 places, 20 transitions, 80 flow. Second operand 5 states and 438 transitions. [2020-10-16 01:43:28,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 141 flow [2020-10-16 01:43:28,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 131 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:43:28,287 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 120 flow [2020-10-16 01:43:28,287 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2020-10-16 01:43:28,287 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:43:28,287 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 120 flow [2020-10-16 01:43:28,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:43:28,288 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:28,288 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:28,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:43:28,288 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:28,289 INFO L82 PathProgramCache]: Analyzing trace with hash 395966646, now seen corresponding path program 1 times [2020-10-16 01:43:28,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:28,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361149930] [2020-10-16 01:43:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:28,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361149930] [2020-10-16 01:43:28,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:28,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:43:28,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996588882] [2020-10-16 01:43:28,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:43:28,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:28,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:43:28,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:43:28,380 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2020-10-16 01:43:28,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 120 flow. Second operand 6 states. [2020-10-16 01:43:28,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:28,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2020-10-16 01:43:28,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:28,448 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:43:28,448 INFO L130 PetriNetUnfolder]: For 76/110 co-relation queries the response was YES. [2020-10-16 01:43:28,449 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 32 events. 7/32 cut-off events. For 76/110 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 107. Up to 17 conditions per place. [2020-10-16 01:43:28,449 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 1 selfloop transitions, 11 changer transitions 1/24 dead transitions. [2020-10-16 01:43:28,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 152 flow [2020-10-16 01:43:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:43:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:43:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2020-10-16 01:43:28,452 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7521739130434782 [2020-10-16 01:43:28,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2020-10-16 01:43:28,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2020-10-16 01:43:28,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:28,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2020-10-16 01:43:28,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:43:28,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:43:28,456 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:43:28,456 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 120 flow. Second operand 6 states and 519 transitions. [2020-10-16 01:43:28,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 152 flow [2020-10-16 01:43:28,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 24 transitions, 127 flow, removed 4 selfloop flow, removed 4 redundant places. [2020-10-16 01:43:28,459 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 134 flow [2020-10-16 01:43:28,459 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:43:28,459 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:43:28,459 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 134 flow [2020-10-16 01:43:28,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:43:28,460 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:28,460 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 01:43:28,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:43:28,460 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1221185230, now seen corresponding path program 1 times [2020-10-16 01:43:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:28,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269805256] [2020-10-16 01:43:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:28,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269805256] [2020-10-16 01:43:28,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:28,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:28,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246064583] [2020-10-16 01:43:28,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:28,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:28,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:28,499 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2020-10-16 01:43:28,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 134 flow. Second operand 4 states. [2020-10-16 01:43:28,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:28,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2020-10-16 01:43:28,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:28,521 INFO L129 PetriNetUnfolder]: 10/44 cut-off events. [2020-10-16 01:43:28,521 INFO L130 PetriNetUnfolder]: For 86/98 co-relation queries the response was YES. [2020-10-16 01:43:28,522 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 44 events. 10/44 cut-off events. For 86/98 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 142. Up to 20 conditions per place. [2020-10-16 01:43:28,522 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 01:43:28,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 24 transitions, 146 flow [2020-10-16 01:43:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2020-10-16 01:43:28,525 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8130434782608695 [2020-10-16 01:43:28,525 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2020-10-16 01:43:28,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2020-10-16 01:43:28,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:28,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2020-10-16 01:43:28,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:28,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:28,528 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:28,528 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 134 flow. Second operand 4 states and 374 transitions. [2020-10-16 01:43:28,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 24 transitions, 146 flow [2020-10-16 01:43:28,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 84 flow, removed 11 selfloop flow, removed 10 redundant places. [2020-10-16 01:43:28,531 INFO L241 Difference]: Finished difference. Result has 33 places, 23 transitions, 79 flow [2020-10-16 01:43:28,531 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2020-10-16 01:43:28,532 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:43:28,532 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 79 flow [2020-10-16 01:43:28,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:28,532 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:28,532 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 01:43:28,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:43:28,533 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:28,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1745607270, now seen corresponding path program 2 times [2020-10-16 01:43:28,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:28,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204529134] [2020-10-16 01:43:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:28,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204529134] [2020-10-16 01:43:28,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:28,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:28,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354565254] [2020-10-16 01:43:28,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:28,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:28,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:28,568 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 115 [2020-10-16 01:43:28,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 79 flow. Second operand 4 states. [2020-10-16 01:43:28,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:28,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 115 [2020-10-16 01:43:28,569 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:28,585 INFO L129 PetriNetUnfolder]: 7/38 cut-off events. [2020-10-16 01:43:28,586 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 01:43:28,586 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 38 events. 7/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 74. Up to 10 conditions per place. [2020-10-16 01:43:28,587 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:43:28,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 85 flow [2020-10-16 01:43:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2020-10-16 01:43:28,589 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7934782608695652 [2020-10-16 01:43:28,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2020-10-16 01:43:28,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2020-10-16 01:43:28,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:28,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2020-10-16 01:43:28,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:28,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:28,592 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:28,592 INFO L185 Difference]: Start difference. First operand has 33 places, 23 transitions, 79 flow. Second operand 4 states and 365 transitions. [2020-10-16 01:43:28,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 85 flow [2020-10-16 01:43:28,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:43:28,594 INFO L241 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2020-10-16 01:43:28,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2020-10-16 01:43:28,594 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:43:28,594 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2020-10-16 01:43:28,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:28,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:43:28,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:43:28 BasicIcfg [2020-10-16 01:43:28,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:43:28,601 INFO L168 Benchmark]: Toolchain (without parser) took 3975.75 ms. Allocated memory was 251.7 MB in the beginning and 371.7 MB in the end (delta: 120.1 MB). Free memory was 207.6 MB in the beginning and 250.8 MB in the end (delta: -43.3 MB). Peak memory consumption was 76.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:28,602 INFO L168 Benchmark]: CDTParser took 0.21 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 01:43:28,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.91 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 207.6 MB in the beginning and 265.9 MB in the end (delta: -58.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:28,604 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.20 ms. Allocated memory is still 315.1 MB. Free memory was 265.9 MB in the beginning and 263.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:28,604 INFO L168 Benchmark]: Boogie Preprocessor took 25.85 ms. Allocated memory is still 315.1 MB. Free memory is still 263.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:43:28,605 INFO L168 Benchmark]: RCFGBuilder took 402.44 ms. Allocated memory is still 315.1 MB. Free memory was 263.4 MB in the beginning and 239.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:28,606 INFO L168 Benchmark]: TraceAbstraction took 2803.00 ms. Allocated memory was 315.1 MB in the beginning and 371.7 MB in the end (delta: 56.6 MB). Free memory was 239.0 MB in the beginning and 250.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:28,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 691.91 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 207.6 MB in the beginning and 265.9 MB in the end (delta: -58.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.20 ms. Allocated memory is still 315.1 MB. Free memory was 265.9 MB in the beginning and 263.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.85 ms. Allocated memory is still 315.1 MB. Free memory is still 263.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 402.44 ms. Allocated memory is still 315.1 MB. Free memory was 263.4 MB in the beginning and 239.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2803.00 ms. Allocated memory was 315.1 MB in the beginning and 371.7 MB in the end (delta: 56.6 MB). Free memory was 239.0 MB in the beginning and 250.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 608 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 43 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 66 PlacesBefore, 27 PlacesAfterwards, 57 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1947 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, 70 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 24 SDtfs, 10 SDslu, 15 SDs, 0 SdLazy, 72 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 2725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...