/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:45:11,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:45:11,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:45:11,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:45:11,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:45:11,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:45:11,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:45:11,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:45:11,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:45:11,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:45:11,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:45:11,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:45:11,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:45:11,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:45:11,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:45:11,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:45:11,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:45:11,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:45:11,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:45:11,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:45:11,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:45:11,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:45:11,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:45:11,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:45:11,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:45:11,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:45:11,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:45:11,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:45:11,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:45:11,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:45:11,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:45:11,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:45:11,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:45:11,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:45:11,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:45:11,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:45:11,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:45:11,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:45:11,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:45:11,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:45:11,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:45:11,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:45:11,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:45:11,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:45:11,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:45:11,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:45:11,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:45:11,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:45:11,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:45:11,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:45:11,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:45:11,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:45:11,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:45:11,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:45:11,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:45:11,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:45:11,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:45:11,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:45:11,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:45:11,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:45:11,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:45:11,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:45:11,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:45:11,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:45:11,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:45:11,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:45:11,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:45:11,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:45:11,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:45:11,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:45:11,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:45:11,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2020-10-16 01:45:11,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2660bcbf2/2ce6a0c517204142980aff54a80fa6f8/FLAG92eef1802 [2020-10-16 01:45:12,101 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:45:12,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2020-10-16 01:45:12,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2660bcbf2/2ce6a0c517204142980aff54a80fa6f8/FLAG92eef1802 [2020-10-16 01:45:12,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2660bcbf2/2ce6a0c517204142980aff54a80fa6f8 [2020-10-16 01:45:12,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:45:12,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:45:12,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:12,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:45:12,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:45:12,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:12" (1/1) ... [2020-10-16 01:45:12,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312a8b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:12, skipping insertion in model container [2020-10-16 01:45:12,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:12" (1/1) ... [2020-10-16 01:45:12,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:45:12,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:45:12,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:12,934 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:45:12,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:13,063 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:45:13,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13 WrapperNode [2020-10-16 01:45:13,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:13,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:13,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:45:13,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:45:13,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:13,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:45:13,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:45:13,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:45:13,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... [2020-10-16 01:45:13,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:45:13,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:45:13,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:45:13,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:45:13,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:45:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:45:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:45:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:45:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:45:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:45:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:45:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:45:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:45:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:45:13,211 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:45:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:45:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:45:13,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:45:13,214 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:45:13,591 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:45:13,592 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:45:13,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:13 BoogieIcfgContainer [2020-10-16 01:45:13,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:45:13,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:45:13,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:45:13,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:45:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:45:12" (1/3) ... [2020-10-16 01:45:13,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4115e0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:13, skipping insertion in model container [2020-10-16 01:45:13,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:13" (2/3) ... [2020-10-16 01:45:13,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4115e0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:13, skipping insertion in model container [2020-10-16 01:45:13,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:13" (3/3) ... [2020-10-16 01:45:13,602 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2020-10-16 01:45:13,613 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:45:13,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:45:13,621 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:45:13,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,648 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,651 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,651 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,653 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,667 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:13,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:45:13,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:45:13,714 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:45:13,714 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:45:13,714 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:45:13,714 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:45:13,714 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:45:13,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:45:13,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:45:13,726 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:45:13,765 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 01:45:13,766 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:13,771 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:45:13,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:45:13,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:13,779 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:45:13,781 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:13,784 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:13,785 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:13,803 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-16 01:45:13,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:13,804 INFO L80 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 1/54 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. 0/53 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:45:13,806 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:45:15,099 INFO L132 LiptonReduction]: Checked pairs total: 1646 [2020-10-16 01:45:15,099 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:45:15,102 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1325 [2020-10-16 01:45:15,110 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2020-10-16 01:45:15,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:15,111 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:15,112 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:15,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash -500303693, now seen corresponding path program 1 times [2020-10-16 01:45:15,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:15,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045629756] [2020-10-16 01:45:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:15,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045629756] [2020-10-16 01:45:15,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:15,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:45:15,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598265949] [2020-10-16 01:45:15,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:45:15,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:15,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:45:15,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:45:15,341 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 109 [2020-10-16 01:45:15,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 01:45:15,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:15,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 109 [2020-10-16 01:45:15,345 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:15,356 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:45:15,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:15,356 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 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 21 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:45:15,360 INFO L132 encePairwiseOnDemand]: 108/109 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 01:45:15,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 01:45:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:45:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:45:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2020-10-16 01:45:15,378 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9403669724770642 [2020-10-16 01:45:15,379 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 205 transitions. [2020-10-16 01:45:15,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 205 transitions. [2020-10-16 01:45:15,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:15,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 205 transitions. [2020-10-16 01:45:15,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:45:15,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:45:15,406 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:45:15,408 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 205 transitions. [2020-10-16 01:45:15,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 01:45:15,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:45:15,415 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 01:45:15,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 01:45:15,419 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 01:45:15,420 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 01:45:15,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:45:15,424 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:15,424 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:15,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:45:15,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1670454748, now seen corresponding path program 1 times [2020-10-16 01:45:15,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:15,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271144548] [2020-10-16 01:45:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:15,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271144548] [2020-10-16 01:45:15,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:15,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:15,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312486373] [2020-10-16 01:45:15,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:15,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:15,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:15,523 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2020-10-16 01:45:15,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 01:45:15,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:15,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2020-10-16 01:45:15,524 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:15,567 INFO L129 PetriNetUnfolder]: 14/44 cut-off events. [2020-10-16 01:45:15,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:15,568 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 44 events. 14/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 110 event pairs, 6 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 79. Up to 29 conditions per place. [2020-10-16 01:45:15,569 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 4 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2020-10-16 01:45:15,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 62 flow [2020-10-16 01:45:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2020-10-16 01:45:15,573 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2020-10-16 01:45:15,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2020-10-16 01:45:15,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2020-10-16 01:45:15,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:15,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2020-10-16 01:45:15,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:15,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:15,577 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:15,578 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 264 transitions. [2020-10-16 01:45:15,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 62 flow [2020-10-16 01:45:15,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:45:15,580 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 66 flow [2020-10-16 01:45:15,580 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, 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=3, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2020-10-16 01:45:15,581 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:45:15,581 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 66 flow [2020-10-16 01:45:15,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:15,581 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:15,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:15,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:45:15,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1193714541, now seen corresponding path program 1 times [2020-10-16 01:45:15,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:15,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907410618] [2020-10-16 01:45:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:15,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907410618] [2020-10-16 01:45:15,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:15,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:15,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709946349] [2020-10-16 01:45:15,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:15,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:15,649 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2020-10-16 01:45:15,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 66 flow. Second operand 4 states. [2020-10-16 01:45:15,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:15,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2020-10-16 01:45:15,650 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:15,686 INFO L129 PetriNetUnfolder]: 8/35 cut-off events. [2020-10-16 01:45:15,686 INFO L130 PetriNetUnfolder]: For 7/16 co-relation queries the response was YES. [2020-10-16 01:45:15,687 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 35 events. 8/35 cut-off events. For 7/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 84. Up to 20 conditions per place. [2020-10-16 01:45:15,688 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 4 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2020-10-16 01:45:15,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 100 flow [2020-10-16 01:45:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:45:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:45:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2020-10-16 01:45:15,691 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2020-10-16 01:45:15,691 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2020-10-16 01:45:15,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2020-10-16 01:45:15,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:15,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2020-10-16 01:45:15,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:45:15,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:45:15,696 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:45:15,696 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 66 flow. Second operand 4 states and 352 transitions. [2020-10-16 01:45:15,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 100 flow [2020-10-16 01:45:15,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:15,698 INFO L241 Difference]: Finished difference. Result has 31 places, 23 transitions, 102 flow [2020-10-16 01:45:15,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, 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=4, PETRI_FLOW=102, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2020-10-16 01:45:15,699 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:45:15,699 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 102 flow [2020-10-16 01:45:15,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:15,699 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:15,699 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:15,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:45:15,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 816058795, now seen corresponding path program 1 times [2020-10-16 01:45:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869167857] [2020-10-16 01:45:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:15,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869167857] [2020-10-16 01:45:15,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:15,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:15,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633239054] [2020-10-16 01:45:15,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:15,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:15,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:15,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:15,768 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:45:15,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 102 flow. Second operand 3 states. [2020-10-16 01:45:15,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:15,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:45:15,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:15,802 INFO L129 PetriNetUnfolder]: 16/59 cut-off events. [2020-10-16 01:45:15,802 INFO L130 PetriNetUnfolder]: For 22/36 co-relation queries the response was YES. [2020-10-16 01:45:15,804 INFO L80 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 59 events. 16/59 cut-off events. For 22/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 170 event pairs, 2 based on Foata normal form. 8/66 useless extension candidates. Maximal degree in co-relation 166. Up to 39 conditions per place. [2020-10-16 01:45:15,805 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2020-10-16 01:45:15,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 114 flow [2020-10-16 01:45:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:45:15,812 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:45:15,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:45:15,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:45:15,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:15,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:45:15,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:15,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:15,815 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:15,815 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 102 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:45:15,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 114 flow [2020-10-16 01:45:15,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 100 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 01:45:15,818 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 100 flow [2020-10-16 01:45:15,818 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2020-10-16 01:45:15,818 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:45:15,819 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 100 flow [2020-10-16 01:45:15,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:15,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:15,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:15,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:45:15,820 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash -398965966, now seen corresponding path program 1 times [2020-10-16 01:45:15,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:15,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063606222] [2020-10-16 01:45:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:15,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063606222] [2020-10-16 01:45:15,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:15,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:15,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757186001] [2020-10-16 01:45:15,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:15,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:15,862 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:45:15,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 100 flow. Second operand 3 states. [2020-10-16 01:45:15,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:15,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:45:15,863 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:15,915 INFO L129 PetriNetUnfolder]: 32/104 cut-off events. [2020-10-16 01:45:15,919 INFO L130 PetriNetUnfolder]: For 51/66 co-relation queries the response was YES. [2020-10-16 01:45:15,920 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 104 events. 32/104 cut-off events. For 51/66 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 428 event pairs, 4 based on Foata normal form. 10/108 useless extension candidates. Maximal degree in co-relation 265. Up to 67 conditions per place. [2020-10-16 01:45:15,921 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2020-10-16 01:45:15,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 112 flow [2020-10-16 01:45:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:45:15,923 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:45:15,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:45:15,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:45:15,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:15,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:45:15,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:15,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:15,926 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:15,926 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 100 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:45:15,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 112 flow [2020-10-16 01:45:15,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:15,930 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 110 flow [2020-10-16 01:45:15,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2020-10-16 01:45:15,930 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:45:15,931 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 110 flow [2020-10-16 01:45:15,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:15,931 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:15,932 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:15,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:45:15,932 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1744545413, now seen corresponding path program 1 times [2020-10-16 01:45:15,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:15,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725403178] [2020-10-16 01:45:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725403178] [2020-10-16 01:45:16,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:16,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:16,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83672339] [2020-10-16 01:45:16,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:16,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:16,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:16,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:16,017 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:45:16,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 110 flow. Second operand 3 states. [2020-10-16 01:45:16,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:16,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:45:16,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:16,054 INFO L129 PetriNetUnfolder]: 56/166 cut-off events. [2020-10-16 01:45:16,055 INFO L130 PetriNetUnfolder]: For 96/119 co-relation queries the response was YES. [2020-10-16 01:45:16,056 INFO L80 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 166 events. 56/166 cut-off events. For 96/119 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 839 event pairs, 7 based on Foata normal form. 17/170 useless extension candidates. Maximal degree in co-relation 430. Up to 116 conditions per place. [2020-10-16 01:45:16,057 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2020-10-16 01:45:16,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 122 flow [2020-10-16 01:45:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:45:16,059 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:45:16,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:45:16,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:45:16,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:16,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:45:16,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:16,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:16,061 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:16,062 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 110 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:45:16,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 122 flow [2020-10-16 01:45:16,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:16,064 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 120 flow [2020-10-16 01:45:16,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 01:45:16,065 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:45:16,065 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 120 flow [2020-10-16 01:45:16,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:16,065 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:16,065 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:16,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:45:16,066 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:16,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1643370772, now seen corresponding path program 1 times [2020-10-16 01:45:16,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:16,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734194609] [2020-10-16 01:45:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:16,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734194609] [2020-10-16 01:45:16,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:16,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:45:16,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915271167] [2020-10-16 01:45:16,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:45:16,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:16,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:45:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:45:16,116 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2020-10-16 01:45:16,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 120 flow. Second operand 5 states. [2020-10-16 01:45:16,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:16,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2020-10-16 01:45:16,117 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:16,167 INFO L129 PetriNetUnfolder]: 35/115 cut-off events. [2020-10-16 01:45:16,167 INFO L130 PetriNetUnfolder]: For 131/255 co-relation queries the response was YES. [2020-10-16 01:45:16,168 INFO L80 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 115 events. 35/115 cut-off events. For 131/255 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 521 event pairs, 0 based on Foata normal form. 73/175 useless extension candidates. Maximal degree in co-relation 362. Up to 71 conditions per place. [2020-10-16 01:45:16,168 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2020-10-16 01:45:16,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 25 transitions, 134 flow [2020-10-16 01:45:16,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:45:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:45:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2020-10-16 01:45:16,171 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8018348623853211 [2020-10-16 01:45:16,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2020-10-16 01:45:16,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2020-10-16 01:45:16,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:16,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2020-10-16 01:45:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:45:16,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:45:16,174 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:45:16,174 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 120 flow. Second operand 5 states and 437 transitions. [2020-10-16 01:45:16,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 25 transitions, 134 flow [2020-10-16 01:45:16,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 25 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:16,176 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2020-10-16 01:45:16,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2020-10-16 01:45:16,177 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:45:16,177 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2020-10-16 01:45:16,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:45:16,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:45:16,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:45:16 BasicIcfg [2020-10-16 01:45:16,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:45:16,184 INFO L168 Benchmark]: Toolchain (without parser) took 3766.13 ms. Allocated memory was 250.6 MB in the beginning and 370.1 MB in the end (delta: 119.5 MB). Free memory was 205.3 MB in the beginning and 296.8 MB in the end (delta: -91.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:16,185 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 250.6 MB. Free memory was 228.7 MB in the beginning and 227.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:45:16,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.25 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 205.3 MB in the beginning and 263.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:16,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 312.0 MB. Free memory was 263.6 MB in the beginning and 261.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:16,187 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 312.0 MB. Free memory was 261.1 MB in the beginning and 259.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:16,188 INFO L168 Benchmark]: RCFGBuilder took 450.51 ms. Allocated memory is still 312.0 MB. Free memory was 259.4 MB in the beginning and 237.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:16,189 INFO L168 Benchmark]: TraceAbstraction took 2586.33 ms. Allocated memory was 312.0 MB in the beginning and 370.1 MB in the end (delta: 58.2 MB). Free memory was 236.5 MB in the beginning and 296.8 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:45:16,193 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 250.6 MB. Free memory was 228.7 MB in the beginning and 227.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 645.25 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 205.3 MB in the beginning and 263.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 312.0 MB. Free memory was 263.6 MB in the beginning and 261.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 312.0 MB. Free memory was 261.1 MB in the beginning and 259.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 450.51 ms. Allocated memory is still 312.0 MB. Free memory was 259.4 MB in the beginning and 237.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2586.33 ms. Allocated memory was 312.0 MB in the beginning and 370.1 MB in the end (delta: 58.2 MB). Free memory was 236.5 MB in the beginning and 296.8 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 609 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 88 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 63 PlacesBefore, 27 PlacesAfterwards, 54 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 1646 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, 67 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: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 45 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 1984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...