/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/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:40:33,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:40:33,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:40:33,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:40:33,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:40:33,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:40:33,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:40:33,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:40:33,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:40:33,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:40:33,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:40:33,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:40:33,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:40:33,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:40:33,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:40:33,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:40:33,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:40:33,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:40:33,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:40:33,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:40:33,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:40:33,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:40:33,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:40:33,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:40:33,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:40:33,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:40:33,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:40:33,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:40:33,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:40:33,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:40:33,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:40:33,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:40:33,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:40:33,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:40:33,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:40:33,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:40:33,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:40:33,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:40:33,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:40:33,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:40:33,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:40:33,673 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 01:40:33,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:40:33,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:40:33,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:40:33,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:40:33,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:40:33,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:40:33,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:40:33,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:40:33,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:40:33,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:40:33,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:40:33,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:40:33,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:40:33,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:40:33,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:40:33,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:40:33,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:40:33,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:40:33,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:40:33,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:40:33,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:40:33,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:40:33,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:40:33,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:40:33,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:40:33,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:40:33,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:40:33,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:40:33,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:40:34,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:40:34,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:40:34,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:40:34,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:40:34,052 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:40:34,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-16 01:40:34,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcba3a05e/37952a4c33d949e790ba3a501f714327/FLAG9622a3199 [2020-10-16 01:40:34,599 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:40:34,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-16 01:40:34,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcba3a05e/37952a4c33d949e790ba3a501f714327/FLAG9622a3199 [2020-10-16 01:40:34,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcba3a05e/37952a4c33d949e790ba3a501f714327 [2020-10-16 01:40:34,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:40:34,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:40:34,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:34,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:40:34,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:40:34,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:34" (1/1) ... [2020-10-16 01:40:34,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20784703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:34, skipping insertion in model container [2020-10-16 01:40:34,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:34" (1/1) ... [2020-10-16 01:40:34,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:40:34,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:40:35,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:35,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:40:35,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:35,809 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:40:35,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35 WrapperNode [2020-10-16 01:40:35,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:35,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:40:35,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:40:35,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:40:35,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:40:35,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:40:35,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:40:35,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:40:35,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (1/1) ... [2020-10-16 01:40:35,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:40:35,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:40:35,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:40:35,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:40:35,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (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 01:40:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:40:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:40:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:40:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:40:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:40:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:40:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:40:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:40:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:40:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:40:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 01:40:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 01:40:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:40:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:40:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:40:35,972 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 01:40:36,381 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:40:36,382 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:40:36,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:36 BoogieIcfgContainer [2020-10-16 01:40:36,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:40:36,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:40:36,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:40:36,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:40:36,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:40:34" (1/3) ... [2020-10-16 01:40:36,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73181e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:36, skipping insertion in model container [2020-10-16 01:40:36,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:35" (2/3) ... [2020-10-16 01:40:36,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73181e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:36, skipping insertion in model container [2020-10-16 01:40:36,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:36" (3/3) ... [2020-10-16 01:40:36,394 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-10-16 01:40:36,406 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:40:36,415 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:40:36,416 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:40:36,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,451 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,452 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,453 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,453 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,453 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,453 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,454 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,454 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,458 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,458 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,458 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,458 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,473 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,473 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,475 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,475 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:36,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:40:36,515 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:40:36,516 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:40:36,516 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:40:36,516 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:40:36,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:40:36,516 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:40:36,516 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:40:36,516 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:40:36,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 01:40:36,575 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 01:40:36,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:36,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 01:40:36,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 01:40:36,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 63 transitions, 138 flow [2020-10-16 01:40:36,590 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:40:36,593 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 01:40:36,596 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 01:40:36,596 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions, 138 flow [2020-10-16 01:40:36,622 INFO L129 PetriNetUnfolder]: 1/63 cut-off events. [2020-10-16 01:40:36,622 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:36,623 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:40:36,626 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 01:40:38,151 INFO L132 LiptonReduction]: Checked pairs total: 2211 [2020-10-16 01:40:38,152 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 01:40:38,155 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1567 [2020-10-16 01:40:38,165 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:40:38,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:38,166 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:38,167 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:38,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:38,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash 599542484, now seen corresponding path program 1 times [2020-10-16 01:40:38,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:38,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495524106] [2020-10-16 01:40:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:38,424 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 01:40:38,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495524106] [2020-10-16 01:40:38,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:38,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:38,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026226551] [2020-10-16 01:40:38,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:38,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:38,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:38,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:38,458 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 01:40:38,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states. [2020-10-16 01:40:38,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:38,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 01:40:38,462 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:38,504 INFO L129 PetriNetUnfolder]: 12/47 cut-off events. [2020-10-16 01:40:38,504 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:38,505 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 47 events. 12/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 2 based on Foata normal form. 8/51 useless extension candidates. Maximal degree in co-relation 76. Up to 25 conditions per place. [2020-10-16 01:40:38,507 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 01:40:38,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 74 flow [2020-10-16 01:40:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2020-10-16 01:40:38,525 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8556430446194225 [2020-10-16 01:40:38,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2020-10-16 01:40:38,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2020-10-16 01:40:38,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:38,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2020-10-16 01:40:38,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:38,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:38,545 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:38,548 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 326 transitions. [2020-10-16 01:40:38,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 74 flow [2020-10-16 01:40:38,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:38,555 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2020-10-16 01:40:38,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2020-10-16 01:40:38,559 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 01:40:38,559 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2020-10-16 01:40:38,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:38,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:38,560 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:38,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:40:38,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1405922977, now seen corresponding path program 1 times [2020-10-16 01:40:38,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:38,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971319651] [2020-10-16 01:40:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:38,698 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 01:40:38,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971319651] [2020-10-16 01:40:38,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:38,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:38,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919775048] [2020-10-16 01:40:38,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:38,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:38,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:38,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:38,702 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 01:40:38,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states. [2020-10-16 01:40:38,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:38,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 01:40:38,703 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:38,716 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 01:40:38,716 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 01:40:38,717 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 3/28 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 1 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 01:40:38,717 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 01:40:38,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 73 flow [2020-10-16 01:40:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 01:40:38,721 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 01:40:38,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 01:40:38,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 01:40:38,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:38,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 01:40:38,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:38,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:38,725 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:38,725 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states and 328 transitions. [2020-10-16 01:40:38,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 73 flow [2020-10-16 01:40:38,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:38,727 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 72 flow [2020-10-16 01:40:38,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2020-10-16 01:40:38,728 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2020-10-16 01:40:38,728 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 72 flow [2020-10-16 01:40:38,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:38,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:38,728 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:38,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:40:38,729 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash 633938633, now seen corresponding path program 1 times [2020-10-16 01:40:38,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:38,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290418788] [2020-10-16 01:40:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:38,795 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 01:40:38,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290418788] [2020-10-16 01:40:38,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:38,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:38,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697158456] [2020-10-16 01:40:38,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:38,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:38,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:38,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:38,802 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 01:40:38,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states. [2020-10-16 01:40:38,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:38,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 01:40:38,803 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:38,828 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 01:40:38,828 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2020-10-16 01:40:38,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 28 events. 3/28 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2020-10-16 01:40:38,830 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 01:40:38,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 78 flow [2020-10-16 01:40:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 01:40:38,833 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 01:40:38,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 01:40:38,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 01:40:38,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:38,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 01:40:38,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:38,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:38,840 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:38,841 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states and 328 transitions. [2020-10-16 01:40:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 78 flow [2020-10-16 01:40:38,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:38,843 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 76 flow [2020-10-16 01:40:38,843 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 01:40:38,843 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 01:40:38,843 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 76 flow [2020-10-16 01:40:38,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:38,844 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:38,844 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:38,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:40:38,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1799443888, now seen corresponding path program 1 times [2020-10-16 01:40:38,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:38,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132342468] [2020-10-16 01:40:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:38,907 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 01:40:38,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132342468] [2020-10-16 01:40:38,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:38,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:38,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366864592] [2020-10-16 01:40:38,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:38,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:38,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:38,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:38,911 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 01:40:38,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states. [2020-10-16 01:40:38,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:38,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 01:40:38,912 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:38,933 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2020-10-16 01:40:38,934 INFO L130 PetriNetUnfolder]: For 27/38 co-relation queries the response was YES. [2020-10-16 01:40:38,934 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 41 events. 4/41 cut-off events. For 27/38 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 2 based on Foata normal form. 5/44 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 01:40:38,935 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 01:40:38,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 95 flow [2020-10-16 01:40:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2020-10-16 01:40:38,937 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2020-10-16 01:40:38,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2020-10-16 01:40:38,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2020-10-16 01:40:38,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:38,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2020-10-16 01:40:38,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:38,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:38,940 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:38,940 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states and 323 transitions. [2020-10-16 01:40:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 95 flow [2020-10-16 01:40:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:38,942 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 83 flow [2020-10-16 01:40:38,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2020-10-16 01:40:38,942 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2020-10-16 01:40:38,943 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 83 flow [2020-10-16 01:40:38,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:38,943 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:38,943 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:38,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:40:38,944 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1823517868, now seen corresponding path program 1 times [2020-10-16 01:40:38,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:38,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466495812] [2020-10-16 01:40:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:38,985 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 01:40:38,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466495812] [2020-10-16 01:40:38,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:38,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:38,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904543499] [2020-10-16 01:40:38,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:38,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:38,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:38,992 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 01:40:38,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states. [2020-10-16 01:40:38,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:38,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 01:40:38,993 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:39,027 INFO L129 PetriNetUnfolder]: 8/72 cut-off events. [2020-10-16 01:40:39,028 INFO L130 PetriNetUnfolder]: For 164/197 co-relation queries the response was YES. [2020-10-16 01:40:39,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 72 events. 8/72 cut-off events. For 164/197 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 309 event pairs, 0 based on Foata normal form. 5/73 useless extension candidates. Maximal degree in co-relation 164. Up to 23 conditions per place. [2020-10-16 01:40:39,029 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-10-16 01:40:39,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 114 flow [2020-10-16 01:40:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:40:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:40:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2020-10-16 01:40:39,032 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8267716535433071 [2020-10-16 01:40:39,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2020-10-16 01:40:39,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2020-10-16 01:40:39,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:39,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2020-10-16 01:40:39,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:40:39,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:40:39,035 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:40:39,035 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states and 420 transitions. [2020-10-16 01:40:39,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 114 flow [2020-10-16 01:40:39,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:39,038 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 104 flow [2020-10-16 01:40:39,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2020-10-16 01:40:39,038 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 01:40:39,038 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 104 flow [2020-10-16 01:40:39,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:39,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:39,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:39,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:40:39,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash -229681398, now seen corresponding path program 1 times [2020-10-16 01:40:39,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:39,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398487255] [2020-10-16 01:40:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:39,076 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 01:40:39,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398487255] [2020-10-16 01:40:39,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:39,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:39,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198417737] [2020-10-16 01:40:39,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:39,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:39,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:39,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:39,079 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2020-10-16 01:40:39,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states. [2020-10-16 01:40:39,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:39,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2020-10-16 01:40:39,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:39,111 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 01:40:39,111 INFO L130 PetriNetUnfolder]: For 250/294 co-relation queries the response was YES. [2020-10-16 01:40:39,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 74 events. 7/74 cut-off events. For 250/294 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 335 event pairs, 2 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 190. Up to 19 conditions per place. [2020-10-16 01:40:39,113 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 4 changer transitions 2/27 dead transitions. [2020-10-16 01:40:39,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 27 transitions, 137 flow [2020-10-16 01:40:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:40:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:40:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2020-10-16 01:40:39,115 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8169291338582677 [2020-10-16 01:40:39,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2020-10-16 01:40:39,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2020-10-16 01:40:39,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:39,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2020-10-16 01:40:39,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:40:39,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:40:39,118 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:40:39,118 INFO L185 Difference]: Start difference. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states and 415 transitions. [2020-10-16 01:40:39,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 27 transitions, 137 flow [2020-10-16 01:40:39,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 27 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:39,122 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 110 flow [2020-10-16 01:40:39,122 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=110, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2020-10-16 01:40:39,122 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2020-10-16 01:40:39,122 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 110 flow [2020-10-16 01:40:39,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:39,123 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:39,123 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:39,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:40:39,123 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash -696474914, now seen corresponding path program 2 times [2020-10-16 01:40:39,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:39,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352199167] [2020-10-16 01:40:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:39,169 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 01:40:39,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352199167] [2020-10-16 01:40:39,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:39,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:39,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847540598] [2020-10-16 01:40:39,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:39,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:39,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:39,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:39,174 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 01:40:39,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 110 flow. Second operand 4 states. [2020-10-16 01:40:39,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:39,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 01:40:39,175 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:39,211 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2020-10-16 01:40:39,211 INFO L130 PetriNetUnfolder]: For 170/180 co-relation queries the response was YES. [2020-10-16 01:40:39,212 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 54 events. 0/54 cut-off events. For 170/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 202 event pairs, 0 based on Foata normal form. 5/58 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2020-10-16 01:40:39,214 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2020-10-16 01:40:39,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 136 flow [2020-10-16 01:40:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:40:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:40:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2020-10-16 01:40:39,217 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8204724409448819 [2020-10-16 01:40:39,217 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2020-10-16 01:40:39,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2020-10-16 01:40:39,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:39,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2020-10-16 01:40:39,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:40:39,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:40:39,221 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:40:39,221 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 110 flow. Second operand 5 states and 521 transitions. [2020-10-16 01:40:39,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 136 flow [2020-10-16 01:40:39,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 124 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:39,228 INFO L241 Difference]: Finished difference. Result has 45 places, 24 transitions, 115 flow [2020-10-16 01:40:39,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2020-10-16 01:40:39,229 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2020-10-16 01:40:39,229 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 115 flow [2020-10-16 01:40:39,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:39,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:39,229 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:39,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:40:39,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1838072000, now seen corresponding path program 1 times [2020-10-16 01:40:39,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:39,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684115355] [2020-10-16 01:40:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:39,341 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 01:40:39,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684115355] [2020-10-16 01:40:39,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:39,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:39,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994416323] [2020-10-16 01:40:39,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:39,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:39,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:39,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:39,346 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 01:40:39,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 115 flow. Second operand 4 states. [2020-10-16 01:40:39,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:39,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 01:40:39,347 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:39,477 INFO L129 PetriNetUnfolder]: 248/471 cut-off events. [2020-10-16 01:40:39,477 INFO L130 PetriNetUnfolder]: For 1596/1680 co-relation queries the response was YES. [2020-10-16 01:40:39,480 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 471 events. 248/471 cut-off events. For 1596/1680 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2648 event pairs, 120 based on Foata normal form. 24/458 useless extension candidates. Maximal degree in co-relation 1107. Up to 328 conditions per place. [2020-10-16 01:40:39,483 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 5 changer transitions 9/37 dead transitions. [2020-10-16 01:40:39,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 181 flow [2020-10-16 01:40:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:40:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:40:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2020-10-16 01:40:39,485 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7748031496062993 [2020-10-16 01:40:39,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2020-10-16 01:40:39,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2020-10-16 01:40:39,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:39,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2020-10-16 01:40:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:40:39,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:40:39,489 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:40:39,489 INFO L185 Difference]: Start difference. First operand has 45 places, 24 transitions, 115 flow. Second operand 5 states and 492 transitions. [2020-10-16 01:40:39,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 181 flow [2020-10-16 01:40:39,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 172 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 01:40:39,493 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 151 flow [2020-10-16 01:40:39,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2020-10-16 01:40:39,494 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2020-10-16 01:40:39,494 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 151 flow [2020-10-16 01:40:39,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:39,494 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:39,494 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:39,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:40:39,495 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:39,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1361834896, now seen corresponding path program 1 times [2020-10-16 01:40:39,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:39,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489731080] [2020-10-16 01:40:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:39,611 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 01:40:39,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489731080] [2020-10-16 01:40:39,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:39,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:39,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531623328] [2020-10-16 01:40:39,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:40:39,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:39,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:40:39,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:40:39,617 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 01:40:39,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 151 flow. Second operand 5 states. [2020-10-16 01:40:39,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:39,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 01:40:39,619 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:39,748 INFO L129 PetriNetUnfolder]: 174/357 cut-off events. [2020-10-16 01:40:39,749 INFO L130 PetriNetUnfolder]: For 1176/1572 co-relation queries the response was YES. [2020-10-16 01:40:39,751 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 357 events. 174/357 cut-off events. For 1176/1572 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1885 event pairs, 30 based on Foata normal form. 58/397 useless extension candidates. Maximal degree in co-relation 1388. Up to 316 conditions per place. [2020-10-16 01:40:39,753 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 9 changer transitions 9/41 dead transitions. [2020-10-16 01:40:39,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 275 flow [2020-10-16 01:40:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:40:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:40:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2020-10-16 01:40:39,757 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7742782152230971 [2020-10-16 01:40:39,757 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2020-10-16 01:40:39,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2020-10-16 01:40:39,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:39,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2020-10-16 01:40:39,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:40:39,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:40:39,772 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:40:39,772 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 151 flow. Second operand 6 states and 590 transitions. [2020-10-16 01:40:39,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 275 flow [2020-10-16 01:40:39,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 268 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:39,778 INFO L241 Difference]: Finished difference. Result has 51 places, 32 transitions, 216 flow [2020-10-16 01:40:39,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2020-10-16 01:40:39,778 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2020-10-16 01:40:39,778 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 216 flow [2020-10-16 01:40:39,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:40:39,778 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:39,779 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:39,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:40:39,779 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1401255375, now seen corresponding path program 1 times [2020-10-16 01:40:39,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:39,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454979749] [2020-10-16 01:40:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:39,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454979749] [2020-10-16 01:40:39,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:39,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:40:39,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80373275] [2020-10-16 01:40:39,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:40:39,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:39,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:40:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:40:39,877 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 01:40:39,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 216 flow. Second operand 6 states. [2020-10-16 01:40:39,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:39,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 01:40:39,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:40,011 INFO L129 PetriNetUnfolder]: 102/230 cut-off events. [2020-10-16 01:40:40,011 INFO L130 PetriNetUnfolder]: For 983/1291 co-relation queries the response was YES. [2020-10-16 01:40:40,012 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 230 events. 102/230 cut-off events. For 983/1291 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1117 event pairs, 3 based on Foata normal form. 65/284 useless extension candidates. Maximal degree in co-relation 1207. Up to 204 conditions per place. [2020-10-16 01:40:40,013 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 4 selfloop transitions, 13 changer transitions 11/45 dead transitions. [2020-10-16 01:40:40,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 398 flow [2020-10-16 01:40:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:40:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:40:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2020-10-16 01:40:40,017 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7739032620922385 [2020-10-16 01:40:40,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2020-10-16 01:40:40,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2020-10-16 01:40:40,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:40,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2020-10-16 01:40:40,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:40:40,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:40:40,022 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:40:40,022 INFO L185 Difference]: Start difference. First operand has 51 places, 32 transitions, 216 flow. Second operand 7 states and 688 transitions. [2020-10-16 01:40:40,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 398 flow [2020-10-16 01:40:40,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 336 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:40,029 INFO L241 Difference]: Finished difference. Result has 54 places, 34 transitions, 242 flow [2020-10-16 01:40:40,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2020-10-16 01:40:40,031 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2020-10-16 01:40:40,031 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 242 flow [2020-10-16 01:40:40,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:40:40,031 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:40,031 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:40,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:40:40,032 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:40,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1574261773, now seen corresponding path program 1 times [2020-10-16 01:40:40,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:40,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486136635] [2020-10-16 01:40:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:40,141 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 01:40:40,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486136635] [2020-10-16 01:40:40,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:40,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:40:40,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975778610] [2020-10-16 01:40:40,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:40:40,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:40,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:40:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:40:40,145 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 01:40:40,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 242 flow. Second operand 7 states. [2020-10-16 01:40:40,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:40,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 01:40:40,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:40,235 INFO L129 PetriNetUnfolder]: 52/141 cut-off events. [2020-10-16 01:40:40,235 INFO L130 PetriNetUnfolder]: For 580/853 co-relation queries the response was YES. [2020-10-16 01:40:40,236 INFO L80 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 141 events. 52/141 cut-off events. For 580/853 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 622 event pairs, 0 based on Foata normal form. 67/196 useless extension candidates. Maximal degree in co-relation 715. Up to 108 conditions per place. [2020-10-16 01:40:40,237 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2020-10-16 01:40:40,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 292 flow [2020-10-16 01:40:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 01:40:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 01:40:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 772 transitions. [2020-10-16 01:40:40,241 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7598425196850394 [2020-10-16 01:40:40,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 772 transitions. [2020-10-16 01:40:40,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 772 transitions. [2020-10-16 01:40:40,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:40,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 772 transitions. [2020-10-16 01:40:40,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 01:40:40,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 01:40:40,245 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 01:40:40,246 INFO L185 Difference]: Start difference. First operand has 54 places, 34 transitions, 242 flow. Second operand 8 states and 772 transitions. [2020-10-16 01:40:40,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 292 flow [2020-10-16 01:40:40,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 227 flow, removed 20 selfloop flow, removed 8 redundant places. [2020-10-16 01:40:40,249 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2020-10-16 01:40:40,250 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2020-10-16 01:40:40,250 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2020-10-16 01:40:40,250 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2020-10-16 01:40:40,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:40:40,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 01:40:40,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:40:40 BasicIcfg [2020-10-16 01:40:40,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:40:40,258 INFO L168 Benchmark]: Toolchain (without parser) took 5382.55 ms. Allocated memory was 250.1 MB in the beginning and 428.3 MB in the end (delta: 178.3 MB). Free memory was 205.8 MB in the beginning and 351.3 MB in the end (delta: -145.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:40,258 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:40:40,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 930.41 ms. Allocated memory was 250.1 MB in the beginning and 309.9 MB in the end (delta: 59.8 MB). Free memory was 205.8 MB in the beginning and 264.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:40,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.17 ms. Allocated memory is still 309.9 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:40,264 INFO L168 Benchmark]: Boogie Preprocessor took 29.02 ms. Allocated memory is still 309.9 MB. Free memory was 262.4 MB in the beginning and 259.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:40,264 INFO L168 Benchmark]: RCFGBuilder took 492.65 ms. Allocated memory is still 309.9 MB. Free memory was 259.8 MB in the beginning and 235.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:40,268 INFO L168 Benchmark]: TraceAbstraction took 3868.74 ms. Allocated memory was 309.9 MB in the beginning and 428.3 MB in the end (delta: 118.5 MB). Free memory was 235.5 MB in the beginning and 351.3 MB in the end (delta: -115.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:40,279 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 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 930.41 ms. Allocated memory was 250.1 MB in the beginning and 309.9 MB in the end (delta: 59.8 MB). Free memory was 205.8 MB in the beginning and 264.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.17 ms. Allocated memory is still 309.9 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.02 ms. Allocated memory is still 309.9 MB. Free memory was 262.4 MB in the beginning and 259.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 492.65 ms. Allocated memory is still 309.9 MB. Free memory was 259.8 MB in the beginning and 235.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3868.74 ms. Allocated memory was 309.9 MB in the beginning and 428.3 MB in the end (delta: 118.5 MB). Free memory was 235.5 MB in the beginning and 351.3 MB in the end (delta: -115.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 821 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 75 PlacesBefore, 33 PlacesAfterwards, 63 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 2211 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 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: 3.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 43 SDtfs, 26 SDslu, 21 SDs, 0 SdLazy, 205 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 5373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...