/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:07:58,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:07:58,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:07:58,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:07:58,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:07:58,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:07:58,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:07:58,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:07:58,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:07:58,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:07:58,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:07:58,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:07:58,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:07:58,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:07:58,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:07:58,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:07:58,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:07:58,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:07:58,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:07:58,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:07:58,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:07:58,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:07:58,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:07:58,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:07:58,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:07:58,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:07:58,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:07:58,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:07:58,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:07:58,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:07:58,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:07:58,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:07:58,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:07:58,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:07:58,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:07:58,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:07:58,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:07:58,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:07:58,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:07:58,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:07:58,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:07:58,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:07:58,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:07:58,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:07:58,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:07:58,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:07:58,137 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:07:58,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:07:58,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:07:58,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:07:58,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:07:58,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:07:58,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:07:58,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:07:58,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:07:58,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:07:58,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:07:58,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:07:58,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:07:58,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:07:58,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:07:58,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:07:58,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:07:58,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:07:58,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:07:58,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:07:58,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:07:58,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:07:58,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:07:58,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:07:58,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:07:58,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:07:58,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:07:58,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:07:58,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:07:58,461 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:07:58,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-16 05:07:58,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9235cf617/8bd0781adba84019afdad09eb0537899/FLAG9cfd1c788 [2020-10-16 05:07:59,129 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:07:59,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-16 05:07:59,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9235cf617/8bd0781adba84019afdad09eb0537899/FLAG9cfd1c788 [2020-10-16 05:07:59,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9235cf617/8bd0781adba84019afdad09eb0537899 [2020-10-16 05:07:59,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:07:59,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:07:59,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:07:59,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:07:59,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:07:59,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:07:59" (1/1) ... [2020-10-16 05:07:59,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3850d8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:07:59, skipping insertion in model container [2020-10-16 05:07:59,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:07:59" (1/1) ... [2020-10-16 05:07:59,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:07:59,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:07:59,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:07:59,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:08:00,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:00,119 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:08:00,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00 WrapperNode [2020-10-16 05:08:00,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:00,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:00,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:08:00,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:08:00,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:00,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:08:00,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:08:00,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:08:00,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:08:00,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:08:00,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:08:00,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:08:00,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:08:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:08:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:08:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:08:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:08:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:08:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:08:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:08:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:08:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:08:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:08:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:08:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:08:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:08:00,296 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:08:00,641 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:08:00,641 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:08:00,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:00 BoogieIcfgContainer [2020-10-16 05:08:00,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:08:00,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:08:00,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:08:00,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:08:00,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:07:59" (1/3) ... [2020-10-16 05:08:00,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cf59d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:00, skipping insertion in model container [2020-10-16 05:08:00,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (2/3) ... [2020-10-16 05:08:00,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cf59d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:00, skipping insertion in model container [2020-10-16 05:08:00,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:00" (3/3) ... [2020-10-16 05:08:00,652 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-10-16 05:08:00,664 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:08:00,671 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:08:00,673 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:08:00,715 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,741 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:00,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:08:00,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:08:00,792 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:08:00,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:08:00,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:08:00,793 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:08:00,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:08:00,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:08:00,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:08:00,811 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:00,858 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:08:00,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:00,864 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:08:00,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:00,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:00,874 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:08:00,877 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:00,880 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:00,881 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:00,908 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:08:00,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:00,909 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:08:00,911 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:08:02,338 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 05:08:02,339 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:08:02,341 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1469 [2020-10-16 05:08:02,350 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:08:02,350 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:02,350 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:02,351 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:02,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:02,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 05:08:02,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:02,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906297218] [2020-10-16 05:08:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:02,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906297218] [2020-10-16 05:08:02,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:02,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:02,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908825050] [2020-10-16 05:08:02,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:02,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:02,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:02,610 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 05:08:02,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:08:02,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:02,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 05:08:02,614 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:02,631 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:08:02,631 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:02,632 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:08:02,633 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:08:02,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:08:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:08:02,647 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8601190476190477 [2020-10-16 05:08:02,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:08:02,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:08:02,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:02,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:08:02,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:02,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:02,661 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:02,663 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:08:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:08:02,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:08:02,669 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:08:02,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:08:02,672 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:08:02,672 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:08:02,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:02,673 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:02,673 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:02,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:08:02,674 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:02,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:02,674 INFO L82 PathProgramCache]: Analyzing trace with hash -360786442, now seen corresponding path program 1 times [2020-10-16 05:08:02,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:02,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298849706] [2020-10-16 05:08:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:02,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298849706] [2020-10-16 05:08:02,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:02,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:02,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550692944] [2020-10-16 05:08:02,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:02,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:02,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:02,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:02,777 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:08:02,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 05:08:02,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:02,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:08:02,778 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:02,809 INFO L129 PetriNetUnfolder]: 10/52 cut-off events. [2020-10-16 05:08:02,810 INFO L130 PetriNetUnfolder]: For 6/19 co-relation queries the response was YES. [2020-10-16 05:08:02,810 INFO L80 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 52 events. 10/52 cut-off events. For 6/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 189 event pairs, 4 based on Foata normal form. 3/48 useless extension candidates. Maximal degree in co-relation 95. Up to 17 conditions per place. [2020-10-16 05:08:02,811 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 2 changer transitions 1/20 dead transitions. [2020-10-16 05:08:02,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 75 flow [2020-10-16 05:08:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 05:08:02,815 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8244047619047619 [2020-10-16 05:08:02,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 05:08:02,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 05:08:02,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:02,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 05:08:02,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:02,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:02,819 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:02,819 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 277 transitions. [2020-10-16 05:08:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 75 flow [2020-10-16 05:08:02,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:02,821 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2020-10-16 05:08:02,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2020-10-16 05:08:02,822 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 05:08:02,823 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2020-10-16 05:08:02,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:02,823 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:02,823 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:02,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:08:02,824 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1999547583, now seen corresponding path program 1 times [2020-10-16 05:08:02,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:02,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397205609] [2020-10-16 05:08:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:02,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397205609] [2020-10-16 05:08:02,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:02,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:02,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37481246] [2020-10-16 05:08:02,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:02,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:02,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:02,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:02,884 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2020-10-16 05:08:02,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states. [2020-10-16 05:08:02,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:02,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2020-10-16 05:08:02,885 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:02,898 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:08:02,899 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2020-10-16 05:08:02,899 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:08:02,899 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:08:02,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:08:02,903 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 05:08:02,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:08:02,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:08:02,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:02,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:08:02,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:02,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:02,906 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:02,907 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:08:02,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:02,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:08:02,909 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:02,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:08:02,909 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:08:02,910 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:02,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:02,910 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:02,910 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:02,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:08:02,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1487991064, now seen corresponding path program 1 times [2020-10-16 05:08:02,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:02,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028964676] [2020-10-16 05:08:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:02,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028964676] [2020-10-16 05:08:02,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:02,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:02,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080060545] [2020-10-16 05:08:02,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:02,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:02,983 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2020-10-16 05:08:02,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:08:02,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:02,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2020-10-16 05:08:02,984 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,024 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2020-10-16 05:08:03,025 INFO L130 PetriNetUnfolder]: For 31/52 co-relation queries the response was YES. [2020-10-16 05:08:03,025 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 40 events. 6/40 cut-off events. For 31/52 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 128 event pairs, 2 based on Foata normal form. 3/39 useless extension candidates. Maximal degree in co-relation 79. Up to 9 conditions per place. [2020-10-16 05:08:03,026 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 1 changer transitions 2/20 dead transitions. [2020-10-16 05:08:03,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 20 transitions, 83 flow [2020-10-16 05:08:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2020-10-16 05:08:03,028 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7901785714285714 [2020-10-16 05:08:03,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2020-10-16 05:08:03,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2020-10-16 05:08:03,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2020-10-16 05:08:03,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:03,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:03,032 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:03,032 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 354 transitions. [2020-10-16 05:08:03,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 20 transitions, 83 flow [2020-10-16 05:08:03,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:03,034 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 61 flow [2020-10-16 05:08:03,034 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 05:08:03,034 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:08:03,035 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 61 flow [2020-10-16 05:08:03,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:03,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:08:03,035 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash 374942620, now seen corresponding path program 2 times [2020-10-16 05:08:03,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814937563] [2020-10-16 05:08:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:03,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814937563] [2020-10-16 05:08:03,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:03,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786219154] [2020-10-16 05:08:03,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:03,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:03,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:03,090 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2020-10-16 05:08:03,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 61 flow. Second operand 4 states. [2020-10-16 05:08:03,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2020-10-16 05:08:03,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,116 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2020-10-16 05:08:03,116 INFO L130 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2020-10-16 05:08:03,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 30 events. 0/30 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 76 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2020-10-16 05:08:03,117 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:08:03,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 74 flow [2020-10-16 05:08:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2020-10-16 05:08:03,120 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8013392857142857 [2020-10-16 05:08:03,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2020-10-16 05:08:03,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2020-10-16 05:08:03,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2020-10-16 05:08:03,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:03,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:03,123 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:03,123 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 61 flow. Second operand 4 states and 359 transitions. [2020-10-16 05:08:03,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 74 flow [2020-10-16 05:08:03,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 18 transitions, 71 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:03,125 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 72 flow [2020-10-16 05:08:03,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2020-10-16 05:08:03,125 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:08:03,125 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 72 flow [2020-10-16 05:08:03,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:03,126 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,126 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:08:03,126 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1668538122, now seen corresponding path program 1 times [2020-10-16 05:08:03,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253124832] [2020-10-16 05:08:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:03,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253124832] [2020-10-16 05:08:03,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:03,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512659157] [2020-10-16 05:08:03,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:03,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:03,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:03,189 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:03,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 72 flow. Second operand 4 states. [2020-10-16 05:08:03,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:03,189 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,243 INFO L129 PetriNetUnfolder]: 32/86 cut-off events. [2020-10-16 05:08:03,244 INFO L130 PetriNetUnfolder]: For 206/217 co-relation queries the response was YES. [2020-10-16 05:08:03,245 INFO L80 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 86 events. 32/86 cut-off events. For 206/217 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 315 event pairs, 13 based on Foata normal form. 9/88 useless extension candidates. Maximal degree in co-relation 210. Up to 54 conditions per place. [2020-10-16 05:08:03,246 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:08:03,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 124 flow [2020-10-16 05:08:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 05:08:03,248 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 05:08:03,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 05:08:03,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 05:08:03,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 05:08:03,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:03,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:03,254 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:03,254 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 72 flow. Second operand 5 states and 423 transitions. [2020-10-16 05:08:03,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 124 flow [2020-10-16 05:08:03,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 27 transitions, 108 flow, removed 3 selfloop flow, removed 5 redundant places. [2020-10-16 05:08:03,257 INFO L241 Difference]: Finished difference. Result has 37 places, 20 transitions, 92 flow [2020-10-16 05:08:03,257 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=20} [2020-10-16 05:08:03,258 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:08:03,258 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 20 transitions, 92 flow [2020-10-16 05:08:03,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:03,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,258 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:08:03,259 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1810208187, now seen corresponding path program 1 times [2020-10-16 05:08:03,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213309988] [2020-10-16 05:08:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:03,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213309988] [2020-10-16 05:08:03,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:03,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220781875] [2020-10-16 05:08:03,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:08:03,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:08:03,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:08:03,307 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:03,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 20 transitions, 92 flow. Second operand 5 states. [2020-10-16 05:08:03,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:03,308 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,364 INFO L129 PetriNetUnfolder]: 18/63 cut-off events. [2020-10-16 05:08:03,365 INFO L130 PetriNetUnfolder]: For 144/198 co-relation queries the response was YES. [2020-10-16 05:08:03,365 INFO L80 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 63 events. 18/63 cut-off events. For 144/198 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 194 event pairs, 2 based on Foata normal form. 20/80 useless extension candidates. Maximal degree in co-relation 213. Up to 44 conditions per place. [2020-10-16 05:08:03,366 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:08:03,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 188 flow [2020-10-16 05:08:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:08:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:08:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 05:08:03,369 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 05:08:03,369 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 05:08:03,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 05:08:03,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 05:08:03,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:08:03,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:08:03,372 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:08:03,372 INFO L185 Difference]: Start difference. First operand has 37 places, 20 transitions, 92 flow. Second operand 6 states and 507 transitions. [2020-10-16 05:08:03,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 188 flow [2020-10-16 05:08:03,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 182 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:03,375 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 142 flow [2020-10-16 05:08:03,376 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:08:03,376 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:08:03,376 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 142 flow [2020-10-16 05:08:03,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:08:03,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,376 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:08:03,377 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,377 INFO L82 PathProgramCache]: Analyzing trace with hash 868613970, now seen corresponding path program 1 times [2020-10-16 05:08:03,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874048501] [2020-10-16 05:08:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:03,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874048501] [2020-10-16 05:08:03,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:08:03,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419672668] [2020-10-16 05:08:03,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:08:03,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:08:03,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:08:03,432 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:03,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 142 flow. Second operand 6 states. [2020-10-16 05:08:03,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:03,433 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,489 INFO L129 PetriNetUnfolder]: 8/41 cut-off events. [2020-10-16 05:08:03,489 INFO L130 PetriNetUnfolder]: For 143/187 co-relation queries the response was YES. [2020-10-16 05:08:03,490 INFO L80 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 41 events. 8/41 cut-off events. For 143/187 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 0 based on Foata normal form. 20/59 useless extension candidates. Maximal degree in co-relation 158. Up to 25 conditions per place. [2020-10-16 05:08:03,490 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:08:03,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 27 transitions, 210 flow [2020-10-16 05:08:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:08:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:08:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 05:08:03,493 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 05:08:03,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 05:08:03,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 05:08:03,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 05:08:03,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:08:03,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:08:03,497 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:08:03,497 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 142 flow. Second operand 7 states and 585 transitions. [2020-10-16 05:08:03,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 27 transitions, 210 flow [2020-10-16 05:08:03,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 27 transitions, 174 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:03,501 INFO L241 Difference]: Finished difference. Result has 44 places, 23 transitions, 144 flow [2020-10-16 05:08:03,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2020-10-16 05:08:03,501 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:08:03,501 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 144 flow [2020-10-16 05:08:03,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:08:03,502 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,502 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:08:03,502 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1745170304, now seen corresponding path program 1 times [2020-10-16 05:08:03,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783465918] [2020-10-16 05:08:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:03,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783465918] [2020-10-16 05:08:03,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:03,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83359221] [2020-10-16 05:08:03,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:03,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:03,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:03,542 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:08:03,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 144 flow. Second operand 4 states. [2020-10-16 05:08:03,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:08:03,542 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,560 INFO L129 PetriNetUnfolder]: 6/33 cut-off events. [2020-10-16 05:08:03,561 INFO L130 PetriNetUnfolder]: For 66/75 co-relation queries the response was YES. [2020-10-16 05:08:03,561 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 33 events. 6/33 cut-off events. For 66/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 53 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 106. Up to 13 conditions per place. [2020-10-16 05:08:03,562 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 05:08:03,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 22 transitions, 142 flow [2020-10-16 05:08:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2020-10-16 05:08:03,563 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7723214285714286 [2020-10-16 05:08:03,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2020-10-16 05:08:03,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2020-10-16 05:08:03,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2020-10-16 05:08:03,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:03,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:03,566 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:03,566 INFO L185 Difference]: Start difference. First operand has 44 places, 23 transitions, 144 flow. Second operand 4 states and 346 transitions. [2020-10-16 05:08:03,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 22 transitions, 142 flow [2020-10-16 05:08:03,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 22 transitions, 106 flow, removed 9 selfloop flow, removed 6 redundant places. [2020-10-16 05:08:03,568 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2020-10-16 05:08:03,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2020-10-16 05:08:03,569 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:08:03,569 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2020-10-16 05:08:03,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:03,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:08:03,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:08:03 BasicIcfg [2020-10-16 05:08:03,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:08:03,576 INFO L168 Benchmark]: Toolchain (without parser) took 4183.08 ms. Allocated memory was 248.0 MB in the beginning and 371.2 MB in the end (delta: 123.2 MB). Free memory was 203.3 MB in the beginning and 239.9 MB in the end (delta: -36.6 MB). Peak memory consumption was 86.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:03,577 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:08:03,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.77 ms. Allocated memory was 248.0 MB in the beginning and 309.3 MB in the end (delta: 61.3 MB). Free memory was 203.3 MB in the beginning and 262.1 MB in the end (delta: -58.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:03,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.49 ms. Allocated memory is still 309.3 MB. Free memory is still 262.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:08:03,579 INFO L168 Benchmark]: Boogie Preprocessor took 28.78 ms. Allocated memory is still 309.3 MB. Free memory was 262.1 MB in the beginning and 259.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:03,580 INFO L168 Benchmark]: RCFGBuilder took 427.15 ms. Allocated memory is still 309.3 MB. Free memory was 259.6 MB in the beginning and 237.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:03,581 INFO L168 Benchmark]: TraceAbstraction took 2928.68 ms. Allocated memory was 309.3 MB in the beginning and 371.2 MB in the end (delta: 61.9 MB). Free memory was 235.2 MB in the beginning and 239.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 57.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:03,584 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 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 719.77 ms. Allocated memory was 248.0 MB in the beginning and 309.3 MB in the end (delta: 61.3 MB). Free memory was 203.3 MB in the beginning and 262.1 MB in the end (delta: -58.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 66.49 ms. Allocated memory is still 309.3 MB. Free memory is still 262.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.78 ms. Allocated memory is still 309.3 MB. Free memory was 262.1 MB in the beginning and 259.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 427.15 ms. Allocated memory is still 309.3 MB. Free memory was 259.6 MB in the beginning and 237.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2928.68 ms. Allocated memory was 309.3 MB in the beginning and 371.2 MB in the end (delta: 61.9 MB). Free memory was 235.2 MB in the beginning and 239.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 57.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 620 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 33 SDtfs, 16 SDslu, 17 SDs, 0 SdLazy, 117 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 3283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...