/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:08:26,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:08:26,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:08:26,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:08:26,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:08:26,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:08:26,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:08:26,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:08:26,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:08:26,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:08:26,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:08:26,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:08:26,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:08:26,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:08:26,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:08:26,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:08:26,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:08:26,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:08:26,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:08:26,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:08:26,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:08:26,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:08:26,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:08:26,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:08:26,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:08:26,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:08:26,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:08:26,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:08:26,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:08:26,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:08:26,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:08:26,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:08:26,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:08:26,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:08:26,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:08:26,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:08:26,128 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 05:08:26,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:08:26,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:08:26,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:08:26,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:08:26,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:08:26,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:08:26,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:08:26,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:08:26,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:08:26,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:08:26,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:08:26,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:08:26,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:08:26,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:08:26,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:08:26,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:08:26,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:08:26,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:08:26,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:08:26,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:08:26,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:08:26,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:08:26,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:08:26,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:08:26,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:08:26,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:08:26,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:08:26,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:08:26,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:08:26,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:08:26,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:08:26,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:08:26,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:08:26,534 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:08:26,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-16 05:08:26,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731240dae/cd848948904d42d796f8d0f5997a4564/FLAG1ac49c0ce [2020-10-16 05:08:27,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:08:27,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-16 05:08:27,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731240dae/cd848948904d42d796f8d0f5997a4564/FLAG1ac49c0ce [2020-10-16 05:08:27,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731240dae/cd848948904d42d796f8d0f5997a4564 [2020-10-16 05:08:27,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:08:27,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:08:27,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:27,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:08:27,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:08:27,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:08:27" (1/1) ... [2020-10-16 05:08:27,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f362755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:27, skipping insertion in model container [2020-10-16 05:08:27,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:08:27" (1/1) ... [2020-10-16 05:08:27,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:08:27,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:08:27,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:28,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:08:28,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:28,128 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:08:28,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28 WrapperNode [2020-10-16 05:08:28,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:28,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:28,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:08:28,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:08:28,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:28,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:08:28,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:08:28,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:08:28,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (1/1) ... [2020-10-16 05:08:28,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:08:28,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:08:28,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:08:28,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:08:28,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (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 05:08:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:08:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:08:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:08:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:08:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:08:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:08:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:08:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:08:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:08:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:08:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:08:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:08:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:08:28,285 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 05:08:28,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:08:28,631 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:08:28,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:28 BoogieIcfgContainer [2020-10-16 05:08:28,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:08:28,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:08:28,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:08:28,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:08:28,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:08:27" (1/3) ... [2020-10-16 05:08:28,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b66048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:28, skipping insertion in model container [2020-10-16 05:08:28,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:28" (2/3) ... [2020-10-16 05:08:28,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b66048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:28, skipping insertion in model container [2020-10-16 05:08:28,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:28" (3/3) ... [2020-10-16 05:08:28,641 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-10-16 05:08:28,650 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:08:28,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:08:28,663 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:08:28,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,693 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,693 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,694 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,694 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,694 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,694 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,707 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,708 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,710 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,711 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:28,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:08:28,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:08:28,755 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:08:28,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:08:28,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:08:28,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:08:28,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:08:28,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:08:28,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:08:28,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:28,815 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:08:28,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:28,820 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 05:08:28,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:28,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:28,829 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:08:28,832 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:28,834 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:28,835 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:28,854 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:08:28,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:28,855 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 05:08:28,857 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:08:30,210 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 05:08:30,210 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:08:30,213 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1386 [2020-10-16 05:08:30,222 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:08:30,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:30,222 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:30,223 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:30,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 05:08:30,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:30,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184693685] [2020-10-16 05:08:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:30,460 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 05:08:30,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184693685] [2020-10-16 05:08:30,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:30,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:30,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514827473] [2020-10-16 05:08:30,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:30,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:30,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:30,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:30,486 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:08:30,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:08:30,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:30,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:08:30,490 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:30,536 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2020-10-16 05:08:30,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:30,537 INFO L80 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 238 event pairs, 11 based on Foata normal form. 3/68 useless extension candidates. Maximal degree in co-relation 112. Up to 37 conditions per place. [2020-10-16 05:08:30,540 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:08:30,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 63 flow [2020-10-16 05:08:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2020-10-16 05:08:30,557 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2020-10-16 05:08:30,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2020-10-16 05:08:30,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2020-10-16 05:08:30,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:30,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2020-10-16 05:08:30,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:30,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:30,575 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:30,578 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 276 transitions. [2020-10-16 05:08:30,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 63 flow [2020-10-16 05:08:30,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:08:30,584 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:08:30,588 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 05:08:30,589 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:08:30,589 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:08:30,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:30,589 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:30,590 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:30,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:08:30,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash -981469325, now seen corresponding path program 1 times [2020-10-16 05:08:30,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:30,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083395449] [2020-10-16 05:08:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:30,649 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 05:08:30,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083395449] [2020-10-16 05:08:30,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:30,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:30,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317939700] [2020-10-16 05:08:30,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:30,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:30,655 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:08:30,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 05:08:30,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:30,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:08:30,656 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:30,684 INFO L129 PetriNetUnfolder]: 13/45 cut-off events. [2020-10-16 05:08:30,685 INFO L130 PetriNetUnfolder]: For 10/17 co-relation queries the response was YES. [2020-10-16 05:08:30,685 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 45 events. 13/45 cut-off events. For 10/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 128 event pairs, 9 based on Foata normal form. 3/45 useless extension candidates. Maximal degree in co-relation 87. Up to 22 conditions per place. [2020-10-16 05:08:30,686 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:08:30,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 68 flow [2020-10-16 05:08:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:30,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2020-10-16 05:08:30,690 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2020-10-16 05:08:30,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2020-10-16 05:08:30,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2020-10-16 05:08:30,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:30,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2020-10-16 05:08:30,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:30,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:30,694 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:30,694 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 276 transitions. [2020-10-16 05:08:30,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 68 flow [2020-10-16 05:08:30,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:30,696 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2020-10-16 05:08:30,696 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 05:08:30,697 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 05:08:30,697 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2020-10-16 05:08:30,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:30,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:30,698 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:30,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:08:30,698 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash -932507259, now seen corresponding path program 1 times [2020-10-16 05:08:30,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:30,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363595622] [2020-10-16 05:08:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:30,771 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 05:08:30,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363595622] [2020-10-16 05:08:30,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:30,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:30,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80671997] [2020-10-16 05:08:30,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:30,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:30,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:30,775 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2020-10-16 05:08:30,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states. [2020-10-16 05:08:30,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:30,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2020-10-16 05:08:30,776 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:30,786 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:08:30,786 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2020-10-16 05:08:30,787 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 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:08:30,787 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:08:30,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:08:30,803 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 05:08:30,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:08:30,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:08:30,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:30,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:08:30,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:30,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:30,806 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:30,806 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:08:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:30,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:30,808 INFO L241 Difference]: Finished difference. Result has 29 places, 17 transitions, 56 flow [2020-10-16 05:08:30,808 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=17} [2020-10-16 05:08:30,808 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 05:08:30,809 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 56 flow [2020-10-16 05:08:30,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:30,809 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:30,809 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:30,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:08:30,809 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash -187643692, now seen corresponding path program 1 times [2020-10-16 05:08:30,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:30,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147117616] [2020-10-16 05:08:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:30,863 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 05:08:30,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147117616] [2020-10-16 05:08:30,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:30,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:30,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746072080] [2020-10-16 05:08:30,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:30,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:30,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:30,867 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:30,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 56 flow. Second operand 4 states. [2020-10-16 05:08:30,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:30,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:30,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:30,921 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:08:30,922 INFO L130 PetriNetUnfolder]: For 80/87 co-relation queries the response was YES. [2020-10-16 05:08:30,923 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 69 events. 28/69 cut-off events. For 80/87 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 215 event pairs, 12 based on Foata normal form. 8/76 useless extension candidates. Maximal degree in co-relation 153. Up to 45 conditions per place. [2020-10-16 05:08:30,923 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:08:30,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 108 flow [2020-10-16 05:08:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 05:08:30,926 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 05:08:30,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 05:08:30,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 05:08:30,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:30,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 05:08:30,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:30,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:30,930 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:30,930 INFO L185 Difference]: Start difference. First operand has 29 places, 17 transitions, 56 flow. Second operand 5 states and 423 transitions. [2020-10-16 05:08:30,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 108 flow [2020-10-16 05:08:30,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:30,932 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 88 flow [2020-10-16 05:08:30,932 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, 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=88, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 05:08:30,933 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:08:30,933 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 88 flow [2020-10-16 05:08:30,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:30,933 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:30,933 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:30,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:08:30,934 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash 381601389, now seen corresponding path program 1 times [2020-10-16 05:08:30,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:30,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078924135] [2020-10-16 05:08:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:30,968 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 05:08:30,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078924135] [2020-10-16 05:08:30,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:30,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:30,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754871330] [2020-10-16 05:08:30,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:30,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:30,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:30,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:30,972 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:08:30,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 88 flow. Second operand 4 states. [2020-10-16 05:08:30,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:30,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:08:30,972 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,017 INFO L129 PetriNetUnfolder]: 60/141 cut-off events. [2020-10-16 05:08:31,017 INFO L130 PetriNetUnfolder]: For 381/409 co-relation queries the response was YES. [2020-10-16 05:08:31,019 INFO L80 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 141 events. 60/141 cut-off events. For 381/409 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 600 event pairs, 22 based on Foata normal form. 16/145 useless extension candidates. Maximal degree in co-relation 408. Up to 93 conditions per place. [2020-10-16 05:08:31,020 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 6 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2020-10-16 05:08:31,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 118 flow [2020-10-16 05:08:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 05:08:31,023 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7834821428571429 [2020-10-16 05:08:31,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 05:08:31,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 05:08:31,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 05:08:31,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:31,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:31,026 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:31,026 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 88 flow. Second operand 4 states and 351 transitions. [2020-10-16 05:08:31,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 118 flow [2020-10-16 05:08:31,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 112 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:31,030 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 92 flow [2020-10-16 05:08:31,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 05:08:31,030 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:08:31,030 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 92 flow [2020-10-16 05:08:31,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:31,031 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:31,031 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:31,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:08:31,031 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:31,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:31,032 INFO L82 PathProgramCache]: Analyzing trace with hash 529727139, now seen corresponding path program 2 times [2020-10-16 05:08:31,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:31,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204301044] [2020-10-16 05:08:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:08:31,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204301044] [2020-10-16 05:08:31,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:31,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:31,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682878752] [2020-10-16 05:08:31,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:08:31,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:31,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:08:31,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:08:31,080 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:31,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 92 flow. Second operand 5 states. [2020-10-16 05:08:31,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:31,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:31,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,128 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:08:31,128 INFO L130 PetriNetUnfolder]: For 143/154 co-relation queries the response was YES. [2020-10-16 05:08:31,129 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 50 events. 16/50 cut-off events. For 143/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 2 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 174. Up to 35 conditions per place. [2020-10-16 05:08:31,129 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:08:31,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 188 flow [2020-10-16 05:08:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:08:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:08:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 05:08:31,132 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 05:08:31,132 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 05:08:31,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 05:08:31,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 05:08:31,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:08:31,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:08:31,135 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:08:31,136 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 92 flow. Second operand 6 states and 507 transitions. [2020-10-16 05:08:31,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 188 flow [2020-10-16 05:08:31,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:31,138 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 05:08:31,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 05:08:31,139 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:08:31,139 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 05:08:31,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:08:31,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:31,139 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:31,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:08:31,140 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1640147321, now seen corresponding path program 1 times [2020-10-16 05:08:31,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:31,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592936885] [2020-10-16 05:08:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:31,170 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 05:08:31,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592936885] [2020-10-16 05:08:31,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:31,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:31,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671073963] [2020-10-16 05:08:31,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:31,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:31,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:31,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:31,174 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:08:31,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 4 states. [2020-10-16 05:08:31,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:31,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:08:31,175 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,218 INFO L129 PetriNetUnfolder]: 27/83 cut-off events. [2020-10-16 05:08:31,218 INFO L130 PetriNetUnfolder]: For 273/297 co-relation queries the response was YES. [2020-10-16 05:08:31,219 INFO L80 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 83 events. 27/83 cut-off events. For 273/297 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 6 based on Foata normal form. 12/93 useless extension candidates. Maximal degree in co-relation 304. Up to 51 conditions per place. [2020-10-16 05:08:31,220 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 5 selfloop transitions, 2 changer transitions 4/28 dead transitions. [2020-10-16 05:08:31,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 171 flow [2020-10-16 05:08:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2020-10-16 05:08:31,222 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7803571428571429 [2020-10-16 05:08:31,222 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2020-10-16 05:08:31,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2020-10-16 05:08:31,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2020-10-16 05:08:31,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:31,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:31,225 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:31,225 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 5 states and 437 transitions. [2020-10-16 05:08:31,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 171 flow [2020-10-16 05:08:31,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 141 flow, removed 11 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:31,228 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 116 flow [2020-10-16 05:08:31,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 05:08:31,229 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:08:31,229 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 116 flow [2020-10-16 05:08:31,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:31,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:31,229 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:31,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:08:31,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:31,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:31,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2059638127, now seen corresponding path program 2 times [2020-10-16 05:08:31,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:31,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021566798] [2020-10-16 05:08:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:31,289 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 05:08:31,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021566798] [2020-10-16 05:08:31,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:31,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:08:31,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127595982] [2020-10-16 05:08:31,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:08:31,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:31,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:08:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:08:31,293 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:31,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 116 flow. Second operand 6 states. [2020-10-16 05:08:31,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:31,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:31,294 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,346 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:08:31,346 INFO L130 PetriNetUnfolder]: For 72/101 co-relation queries the response was YES. [2020-10-16 05:08:31,347 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 32 events. 7/32 cut-off events. For 72/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 17/48 useless extension candidates. Maximal degree in co-relation 103. Up to 17 conditions per place. [2020-10-16 05:08:31,347 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:08:31,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 178 flow [2020-10-16 05:08:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:08:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:08:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 05:08:31,350 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 05:08:31,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 05:08:31,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 05:08:31,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 05:08:31,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:08:31,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:08:31,354 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:08:31,354 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 116 flow. Second operand 7 states and 585 transitions. [2020-10-16 05:08:31,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 178 flow [2020-10-16 05:08:31,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 156 flow, removed 8 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:31,356 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 132 flow [2020-10-16 05:08:31,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=132, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:08:31,357 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:08:31,357 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 132 flow [2020-10-16 05:08:31,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:08:31,357 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:31,357 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 05:08:31,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:08:31,358 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 263191936, now seen corresponding path program 1 times [2020-10-16 05:08:31,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:31,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558745343] [2020-10-16 05:08:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:31,389 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 05:08:31,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558745343] [2020-10-16 05:08:31,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:31,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:31,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219800342] [2020-10-16 05:08:31,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:31,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:31,392 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2020-10-16 05:08:31,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 132 flow. Second operand 4 states. [2020-10-16 05:08:31,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:31,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2020-10-16 05:08:31,393 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,422 INFO L129 PetriNetUnfolder]: 13/51 cut-off events. [2020-10-16 05:08:31,422 INFO L130 PetriNetUnfolder]: For 92/103 co-relation queries the response was YES. [2020-10-16 05:08:31,423 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 51 events. 13/51 cut-off events. For 92/103 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 132 event pairs, 1 based on Foata normal form. 3/52 useless extension candidates. Maximal degree in co-relation 162. Up to 23 conditions per place. [2020-10-16 05:08:31,423 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 5 selfloop transitions, 1 changer transitions 2/25 dead transitions. [2020-10-16 05:08:31,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 25 transitions, 156 flow [2020-10-16 05:08:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2020-10-16 05:08:31,425 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7879464285714286 [2020-10-16 05:08:31,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2020-10-16 05:08:31,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2020-10-16 05:08:31,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2020-10-16 05:08:31,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:31,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:31,428 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:31,428 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 132 flow. Second operand 4 states and 353 transitions. [2020-10-16 05:08:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 25 transitions, 156 flow [2020-10-16 05:08:31,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 119 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 05:08:31,430 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 103 flow [2020-10-16 05:08:31,430 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2020-10-16 05:08:31,431 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:08:31,431 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 103 flow [2020-10-16 05:08:31,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:31,431 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:31,431 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 05:08:31,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:08:31,432 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1879784306, now seen corresponding path program 2 times [2020-10-16 05:08:31,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:31,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071544066] [2020-10-16 05:08:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:31,461 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 05:08:31,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071544066] [2020-10-16 05:08:31,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:31,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:31,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101071215] [2020-10-16 05:08:31,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:31,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:31,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:31,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:31,464 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2020-10-16 05:08:31,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 103 flow. Second operand 4 states. [2020-10-16 05:08:31,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:31,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2020-10-16 05:08:31,465 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,489 INFO L129 PetriNetUnfolder]: 11/51 cut-off events. [2020-10-16 05:08:31,490 INFO L130 PetriNetUnfolder]: For 45/53 co-relation queries the response was YES. [2020-10-16 05:08:31,490 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 51 events. 11/51 cut-off events. For 45/53 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 125 event pairs, 0 based on Foata normal form. 3/51 useless extension candidates. Maximal degree in co-relation 137. Up to 17 conditions per place. [2020-10-16 05:08:31,491 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 4 selfloop transitions, 2 changer transitions 3/26 dead transitions. [2020-10-16 05:08:31,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 136 flow [2020-10-16 05:08:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2020-10-16 05:08:31,493 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2020-10-16 05:08:31,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2020-10-16 05:08:31,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2020-10-16 05:08:31,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2020-10-16 05:08:31,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:31,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:31,496 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:31,496 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 103 flow. Second operand 5 states and 440 transitions. [2020-10-16 05:08:31,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 136 flow [2020-10-16 05:08:31,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 132 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:31,498 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 110 flow [2020-10-16 05:08:31,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2020-10-16 05:08:31,499 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 05:08:31,499 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 110 flow [2020-10-16 05:08:31,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:31,499 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:31,499 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 05:08:31,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:08:31,500 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1094253390, now seen corresponding path program 3 times [2020-10-16 05:08:31,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:31,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883332785] [2020-10-16 05:08:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:31,528 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 05:08:31,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883332785] [2020-10-16 05:08:31,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:31,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:31,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742517227] [2020-10-16 05:08:31,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:31,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:31,531 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2020-10-16 05:08:31,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 110 flow. Second operand 4 states. [2020-10-16 05:08:31,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:31,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2020-10-16 05:08:31,532 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:31,546 INFO L129 PetriNetUnfolder]: 7/38 cut-off events. [2020-10-16 05:08:31,547 INFO L130 PetriNetUnfolder]: For 30/33 co-relation queries the response was YES. [2020-10-16 05:08:31,547 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 38 events. 7/38 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 2/38 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2020-10-16 05:08:31,547 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 05:08:31,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 116 flow [2020-10-16 05:08:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2020-10-16 05:08:31,549 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.796875 [2020-10-16 05:08:31,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2020-10-16 05:08:31,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2020-10-16 05:08:31,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:31,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2020-10-16 05:08:31,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:31,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:31,552 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:31,552 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 110 flow. Second operand 4 states and 357 transitions. [2020-10-16 05:08:31,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 23 transitions, 116 flow [2020-10-16 05:08:31,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 23 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:31,553 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2020-10-16 05:08:31,553 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=102, 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 05:08:31,554 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:08:31,554 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2020-10-16 05:08:31,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:31,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:08:31,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:08:31 BasicIcfg [2020-10-16 05:08:31,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:08:31,561 INFO L168 Benchmark]: Toolchain (without parser) took 4153.25 ms. Allocated memory was 250.1 MB in the beginning and 369.6 MB in the end (delta: 119.5 MB). Free memory was 203.1 MB in the beginning and 197.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 125.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:31,562 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 250.1 MB. Free memory is still 223.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:08:31,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.22 ms. Allocated memory was 250.1 MB in the beginning and 312.0 MB in the end (delta: 61.9 MB). Free memory was 203.1 MB in the beginning and 265.4 MB in the end (delta: -62.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:31,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.36 ms. Allocated memory is still 312.0 MB. Free memory is still 265.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:08:31,564 INFO L168 Benchmark]: Boogie Preprocessor took 27.71 ms. Allocated memory is still 312.0 MB. Free memory was 265.4 MB in the beginning and 262.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:31,565 INFO L168 Benchmark]: RCFGBuilder took 428.44 ms. Allocated memory is still 312.0 MB. Free memory was 262.9 MB in the beginning and 240.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:31,566 INFO L168 Benchmark]: TraceAbstraction took 2924.08 ms. Allocated memory was 312.0 MB in the beginning and 369.6 MB in the end (delta: 57.7 MB). Free memory was 238.4 MB in the beginning and 197.1 MB in the end (delta: 41.3 MB). Peak memory consumption was 99.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:31,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 250.1 MB. Free memory is still 223.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 717.22 ms. Allocated memory was 250.1 MB in the beginning and 312.0 MB in the end (delta: 61.9 MB). Free memory was 203.1 MB in the beginning and 265.4 MB in the end (delta: -62.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.36 ms. Allocated memory is still 312.0 MB. Free memory is still 265.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.71 ms. Allocated memory is still 312.0 MB. Free memory was 265.4 MB in the beginning and 262.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 428.44 ms. Allocated memory is still 312.0 MB. Free memory was 262.9 MB in the beginning and 240.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2924.08 ms. Allocated memory was 312.0 MB in the beginning and 369.6 MB in the end (delta: 57.7 MB). Free memory was 238.4 MB in the beginning and 197.1 MB in the end (delta: 41.3 MB). Peak memory consumption was 99.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 596 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 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: 2.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 49 SDtfs, 25 SDslu, 22 SDs, 0 SdLazy, 152 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred 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, 0.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...